---
_id: '4780'
abstract:
- lang: eng
text: Quantifying and designing the cost pool generated by Business Intelligence
and Analytics (BI&A) would improve cost transparency and invoicing processes,
allowing a fairer, more exact allocation of costs to service consumers. Yet there
is still no method for determining BI&A costs to provide a base for allocation
purposes. While literature describes several methods for BI&A cost estimation
on an ROI or resource-consumption level, none of these methods considers an overall
approach for BI&A. To tackle this problem, we propose a service-oriented cost
allocation model which calculates BI&A applications based on defined services,
enabling a cost transfer to service consumers. This new approach specifies steps
towards deriving a usable pricing scheme for an entire BI&A service portfolio
– both for allocation purposes as well as improving cost evaluation of BI&A projects.
Moreover, it prevents BI&A departments from being considered as the sole cost
driver, increasing customer understanding and cost awareness.
author:
- first_name: Raphael
full_name: Grytz, Raphael
id: '4481'
last_name: Grytz
- first_name: Artus
full_name: Krohn-Grimberghe, Artus
last_name: Krohn-Grimberghe
citation:
ama: 'Grytz R, Krohn-Grimberghe A. Service-oriented Cost Allocation for Business
Intelligence and Analytics: Who pays for BI&A? In: Proceedings of the 50th
Hawaii International Conference on System Sciences (2017). Koloa, HI, USA:
Hawaii International Conference on System Sciences; 2017. doi:10.24251/hicss.2017.123'
apa: 'Grytz, R., & Krohn-Grimberghe, A. (2017). Service-oriented Cost Allocation
for Business Intelligence and Analytics: Who pays for BI&A? In Proceedings
of the 50th Hawaii International Conference on System Sciences (2017). Koloa,
HI, USA: Hawaii International Conference on System Sciences. https://doi.org/10.24251/hicss.2017.123'
bibtex: '@inproceedings{Grytz_Krohn-Grimberghe_2017, place={Koloa, HI, USA}, title={Service-oriented
Cost Allocation for Business Intelligence and Analytics: Who pays for BI&A?},
DOI={10.24251/hicss.2017.123},
booktitle={Proceedings of the 50th Hawaii International Conference on System Sciences
(2017)}, publisher={Hawaii International Conference on System Sciences}, author={Grytz,
Raphael and Krohn-Grimberghe, Artus}, year={2017} }'
chicago: 'Grytz, Raphael, and Artus Krohn-Grimberghe. “Service-Oriented Cost Allocation
for Business Intelligence and Analytics: Who Pays for BI&A?” In Proceedings
of the 50th Hawaii International Conference on System Sciences (2017). Koloa,
HI, USA: Hawaii International Conference on System Sciences, 2017. https://doi.org/10.24251/hicss.2017.123.'
ieee: 'R. Grytz and A. Krohn-Grimberghe, “Service-oriented Cost Allocation for Business
Intelligence and Analytics: Who pays for BI&A?,” in Proceedings of the
50th Hawaii International Conference on System Sciences (2017), 2017.'
mla: 'Grytz, Raphael, and Artus Krohn-Grimberghe. “Service-Oriented Cost Allocation
for Business Intelligence and Analytics: Who Pays for BI&A?” Proceedings
of the 50th Hawaii International Conference on System Sciences (2017), Hawaii
International Conference on System Sciences, 2017, doi:10.24251/hicss.2017.123.'
short: 'R. Grytz, A. Krohn-Grimberghe, in: Proceedings of the 50th Hawaii International
Conference on System Sciences (2017), Hawaii International Conference on System
Sciences, Koloa, HI, USA, 2017.'
date_created: 2018-10-18T19:16:58Z
date_updated: 2022-01-06T07:01:22Z
doi: 10.24251/hicss.2017.123
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://scholarspace.manoa.hawaii.edu/bitstream/10125/41276/1/paper0127.pdf
oa: '1'
place: Koloa, HI, USA
publication: Proceedings of the 50th Hawaii International Conference on System Sciences
(2017)
publication_identifier:
isbn:
- '9780998133102'
publication_status: published
publisher: Hawaii International Conference on System Sciences
status: public
title: 'Service-oriented Cost Allocation for Business Intelligence and Analytics:
Who pays for BI&A?'
type: conference
user_id: '4481'
year: '2017'
...
---
_id: '717'
abstract:
- lang: eng
text: In conventional large-scale networks, creation and management of network services
are costly and complex tasks that often consume a lot of resources, including
time and manpower. Network softwarization and network function virtualization
have been introduced to tackle these problems, aiming at decreasing costs and
complexity of implementing new services, maintaining the implemented services,
and managing available resources in service provisioning platforms and underlying
infrastructures. To experience the full potential of these approaches, innovative
development support tools and service provisioning environments are needed. To
answer these needs, we introduce the architecture of the open-source SONATA system,
a service programming, orchestration, and management framework. We present a development
toolchain for virtualized network services, fully integrated with a service platform
and orchestration system. We introduce the modular and flexible architecture of
our system and discuss its main components and features, such as function- and
service-specific managers that allow fine-grained service management, slicing
support to facilitate multi-tenancy, recursiveness for improved scalability, and
full-featured DevOps support.
author:
- first_name: Sevil
full_name: Dräxler, Sevil
id: '31764'
last_name: Dräxler
- first_name: Holger
full_name: Karl, Holger
id: '126'
last_name: Karl
- first_name: Manuel
full_name: Peuster, Manuel
id: '13271'
last_name: Peuster
- first_name: Hadi
full_name: Razzaghi Kouchaksaraei, Hadi
id: '60845'
last_name: Razzaghi Kouchaksaraei
- first_name: Michael
full_name: Bredel, Michael
last_name: Bredel
- first_name: Johannes
full_name: Lessmann, Johannes
last_name: Lessmann
- first_name: Thomas
full_name: Soenen, Thomas
last_name: Soenen
- first_name: Wouter
full_name: Tavernier, Wouter
last_name: Tavernier
- first_name: Sharon
full_name: Mendel-Brin, Sharon
last_name: Mendel-Brin
- first_name: George
full_name: Xilouris, George
last_name: Xilouris
citation:
ama: 'Dräxler S, Karl H, Peuster M, et al. SONATA: Service programming and orchestration
for virtualized software networks. In: 2017 IEEE International Conference on
Communications Workshops (ICC Workshops). IEEE; 2017. doi:10.1109/iccw.2017.7962785'
apa: 'Dräxler, S., Karl, H., Peuster, M., Razzaghi Kouchaksaraei, H., Bredel, M.,
Lessmann, J., … Xilouris, G. (2017). SONATA: Service programming and orchestration
for virtualized software networks. In 2017 IEEE International Conference on
Communications Workshops (ICC Workshops). Paris, France: IEEE. https://doi.org/10.1109/iccw.2017.7962785'
bibtex: '@inproceedings{Dräxler_Karl_Peuster_Razzaghi Kouchaksaraei_Bredel_Lessmann_Soenen_Tavernier_Mendel-Brin_Xilouris_2017,
title={SONATA: Service programming and orchestration for virtualized software
networks}, DOI={10.1109/iccw.2017.7962785},
booktitle={2017 IEEE International Conference on Communications Workshops (ICC
Workshops)}, publisher={IEEE}, author={Dräxler, Sevil and Karl, Holger and Peuster,
Manuel and Razzaghi Kouchaksaraei, Hadi and Bredel, Michael and Lessmann, Johannes
and Soenen, Thomas and Tavernier, Wouter and Mendel-Brin, Sharon and Xilouris,
George}, year={2017} }'
chicago: 'Dräxler, Sevil, Holger Karl, Manuel Peuster, Hadi Razzaghi Kouchaksaraei,
Michael Bredel, Johannes Lessmann, Thomas Soenen, Wouter Tavernier, Sharon Mendel-Brin,
and George Xilouris. “SONATA: Service Programming and Orchestration for Virtualized
Software Networks.” In 2017 IEEE International Conference on Communications
Workshops (ICC Workshops). IEEE, 2017. https://doi.org/10.1109/iccw.2017.7962785.'
ieee: 'S. Dräxler et al., “SONATA: Service programming and orchestration
for virtualized software networks,” in 2017 IEEE International Conference on
Communications Workshops (ICC Workshops), Paris, France, 2017.'
mla: 'Dräxler, Sevil, et al. “SONATA: Service Programming and Orchestration for
Virtualized Software Networks.” 2017 IEEE International Conference on Communications
Workshops (ICC Workshops), IEEE, 2017, doi:10.1109/iccw.2017.7962785.'
short: 'S. Dräxler, H. Karl, M. Peuster, H. Razzaghi Kouchaksaraei, M. Bredel, J.
Lessmann, T. Soenen, W. Tavernier, S. Mendel-Brin, G. Xilouris, in: 2017 IEEE
International Conference on Communications Workshops (ICC Workshops), IEEE, 2017.'
conference:
end_date: 2017-05-25
location: Paris, France
name: 2017 IEEE International Conference on Communications Workshops (ICC Workshops)
start_date: 2017-05-21
date_created: 2017-11-22T09:42:59Z
date_updated: 2022-01-06T07:03:28Z
ddc:
- '000'
department:
- _id: '75'
doi: 10.1109/iccw.2017.7962785
file:
- access_level: closed
content_type: application/pdf
creator: ups
date_created: 2018-11-02T14:22:10Z
date_updated: 2018-11-02T14:22:10Z
file_id: '5270'
file_name: 07962785.pdf
file_size: 821211
relation: main_file
success: 1
file_date_updated: 2018-11-02T14:22:10Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/pdf/1605.05850.pdf
oa: '1'
project:
- _id: '25'
call_identifier: 5G PPP Phase 1
grant_number: '671517'
name: 'SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized
Networks'
- _id: '1'
name: SFB 901
- _id: '4'
name: SFB 901 - Project Area C
- _id: '16'
name: SFB 901 - Subproject C4
publication: 2017 IEEE International Conference on Communications Workshops (ICC Workshops)
publication_identifier:
isbn:
- '9781509015252'
publication_status: published
publisher: IEEE
status: public
title: 'SONATA: Service programming and orchestration for virtualized software networks'
type: conference
user_id: '31764'
year: '2017'
...
---
_id: '723'
abstract:
- lang: eng
text: "Developing a virtualized network service does not only involve the\r\n implementation
and configuration of the network functions it is\r\n composed of but also its
integration and test with management\r\n solutions that will control the service
in its production\r\n environment. These integration tasks require testbeds that
offer the\r\n needed network function virtualization infrastructure~(NFVI), like
OpenStack, introducing a\r\n lot of management and maintenance overheads. Such
testbed setups\r\n become even more complicated when the multi\r\n point-of-presence~(PoP)
case, with multiple infrastructure\r\n installations, is considered.\r\n\r\n
\ In this demo, we showcase an emulation platform that executes\r\n containerized
network services in user-defined multi-PoP\r\n topologies. The platform does
not only allow network service developers to\r\n locally test their services
but also to connect real-world\r\n management and orchestration solutions to
the emulated PoPs. During our\r\n interactive demonstration we focus on the integration
between\r\n the emulated infrastructure and state-of-the-art orchestration\r\n
\ solutions like SONATA or OSM."
author:
- first_name: Manuel
full_name: Peuster, Manuel
id: '13271'
last_name: Peuster
- first_name: Sevil
full_name: Dräxler, Sevil
id: '31764'
last_name: Dräxler
- first_name: Hadi
full_name: Razzaghi Kouchaksaraei, Hadi
id: '60845'
last_name: Razzaghi Kouchaksaraei
- first_name: Steven
full_name: van Rossem, Steven
last_name: van Rossem
- first_name: Wouter
full_name: Tavernier, Wouter
last_name: Tavernier
- first_name: Holger
full_name: Karl, Holger
id: '126'
last_name: Karl
citation:
ama: 'Peuster M, Dräxler S, Razzaghi Kouchaksaraei H, van Rossem S, Tavernier W,
Karl H. A flexible multi-pop infrastructure emulator for carrier-grade MANO systems.
In: IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy,
July 3-7, 2017. ; 2017:1--3. doi:10.1109/NETSOFT.2017.8004250'
apa: Peuster, M., Dräxler, S., Razzaghi Kouchaksaraei, H., van Rossem, S., Tavernier,
W., & Karl, H. (2017). A flexible multi-pop infrastructure emulator for carrier-grade
MANO systems. In IEEE Conference on Network Softwarization, NetSoft 2017, Bologna,
Italy, July 3-7, 2017 (pp. 1--3). Bologna. https://doi.org/10.1109/NETSOFT.2017.8004250
bibtex: '@inproceedings{Peuster_Dräxler_Razzaghi Kouchaksaraei_van Rossem_Tavernier_Karl_2017,
title={A flexible multi-pop infrastructure emulator for carrier-grade MANO systems},
DOI={10.1109/NETSOFT.2017.8004250},
booktitle={IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy,
July 3-7, 2017}, author={Peuster, Manuel and Dräxler, Sevil and Razzaghi Kouchaksaraei,
Hadi and van Rossem, Steven and Tavernier, Wouter and Karl, Holger}, year={2017},
pages={1--3} }'
chicago: Peuster, Manuel, Sevil Dräxler, Hadi Razzaghi Kouchaksaraei, Steven van
Rossem, Wouter Tavernier, and Holger Karl. “A Flexible Multi-Pop Infrastructure
Emulator for Carrier-Grade MANO Systems.” In IEEE Conference on Network Softwarization,
NetSoft 2017, Bologna, Italy, July 3-7, 2017, 1--3, 2017. https://doi.org/10.1109/NETSOFT.2017.8004250.
ieee: M. Peuster, S. Dräxler, H. Razzaghi Kouchaksaraei, S. van Rossem, W. Tavernier,
and H. Karl, “A flexible multi-pop infrastructure emulator for carrier-grade MANO
systems,” in IEEE Conference on Network Softwarization, NetSoft 2017, Bologna,
Italy, July 3-7, 2017, Bologna, 2017, pp. 1--3.
mla: Peuster, Manuel, et al. “A Flexible Multi-Pop Infrastructure Emulator for Carrier-Grade
MANO Systems.” IEEE Conference on Network Softwarization, NetSoft 2017, Bologna,
Italy, July 3-7, 2017, 2017, pp. 1--3, doi:10.1109/NETSOFT.2017.8004250.
short: 'M. Peuster, S. Dräxler, H. Razzaghi Kouchaksaraei, S. van Rossem, W. Tavernier,
H. Karl, in: IEEE Conference on Network Softwarization, NetSoft 2017, Bologna,
Italy, July 3-7, 2017, 2017, pp. 1--3.'
conference:
location: Bologna
name: IEEE Conference on Network Softwarization
date_created: 2017-11-27T10:22:25Z
date_updated: 2022-01-06T07:03:30Z
ddc:
- '000'
department:
- _id: '75'
doi: 10.1109/NETSOFT.2017.8004250
file:
- access_level: open_access
content_type: application/pdf
creator: peuster
date_created: 2018-07-05T11:14:37Z
date_updated: 2018-07-05T11:14:37Z
file_id: '3432'
file_name: main_ris.pdf
file_size: 963155
relation: main_file
file_date_updated: 2018-07-05T11:14:37Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
page: 1--3
project:
- _id: '25'
call_identifier: 5G PPP Phase 1
grant_number: '671517'
name: 'SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized
Networks'
publication: IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy,
July 3-7, 2017
publication_status: published
status: public
title: A flexible multi-pop infrastructure emulator for carrier-grade MANO systems
type: conference
urn: '7236'
user_id: '13271'
year: '2017'
...
---
_id: '87'
abstract:
- lang: eng
text: Management of complex network services requires flexible and efficient service
provisioning as well as optimized handling of continuous changes in the workload
of the service.To adapt to changes in the demand, service components need to be
replicated (scaling) and allocated to physical resources (placement) dynamically.
In this paper, we propose a fullyautomated approach to the joint optimization
problem of scaling and placement, enabling quick reaction to changes. We formalize
the problem, analyze its complexity, and develop two algorithms to solve it. Extensive
empirical results show the applicability andeffectiveness of the proposed approach.
author:
- first_name: Sevil
full_name: Dräxler, Sevil
id: '31764'
last_name: Dräxler
- first_name: Holger
full_name: Karl, Holger
id: '126'
last_name: Karl
- first_name: Zoltan Adam
full_name: Mann, Zoltan Adam
last_name: Mann
citation:
ama: 'Dräxler S, Karl H, Mann ZA. Joint Optimization of Scaling and Placement of
Virtual Network Services. In: Proceedings of the 17th IEEE/ACM International
Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017). ; 2017. doi:10.1109/CCGRID.2017.25'
apa: Dräxler, S., Karl, H., & Mann, Z. A. (2017). Joint Optimization of Scaling
and Placement of Virtual Network Services. In Proceedings of the 17th IEEE/ACM
International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017).
https://doi.org/10.1109/CCGRID.2017.25
bibtex: '@inproceedings{Dräxler_Karl_Mann_2017, title={Joint Optimization of Scaling
and Placement of Virtual Network Services}, DOI={10.1109/CCGRID.2017.25},
booktitle={Proceedings of the 17th IEEE/ACM International Symposium on Cluster,
Cloud and Grid Computing (CCGrid 2017)}, author={Dräxler, Sevil and Karl, Holger
and Mann, Zoltan Adam}, year={2017} }'
chicago: Dräxler, Sevil, Holger Karl, and Zoltan Adam Mann. “Joint Optimization
of Scaling and Placement of Virtual Network Services.” In Proceedings of the
17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid
2017), 2017. https://doi.org/10.1109/CCGRID.2017.25.
ieee: S. Dräxler, H. Karl, and Z. A. Mann, “Joint Optimization of Scaling and Placement
of Virtual Network Services,” in Proceedings of the 17th IEEE/ACM International
Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017), 2017.
mla: Dräxler, Sevil, et al. “Joint Optimization of Scaling and Placement of Virtual
Network Services.” Proceedings of the 17th IEEE/ACM International Symposium
on Cluster, Cloud and Grid Computing (CCGrid 2017), 2017, doi:10.1109/CCGRID.2017.25.
short: 'S. Dräxler, H. Karl, Z.A. Mann, in: Proceedings of the 17th IEEE/ACM International
Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017), 2017.'
date_created: 2017-10-17T12:41:08Z
date_updated: 2022-01-06T07:03:59Z
ddc:
- '040'
department:
- _id: '75'
doi: 10.1109/CCGRID.2017.25
file:
- access_level: open_access
content_type: application/pdf
creator: sevilmeh
date_created: 2018-06-25T08:07:43Z
date_updated: 2018-06-25T08:07:43Z
file_id: '3324'
file_name: RIS.pdf
file_size: 2229109
relation: main_file
file_date_updated: 2018-06-25T08:07:43Z
has_accepted_license: '1'
oa: '1'
project:
- _id: '1'
name: SFB 901
- _id: '16'
name: SFB 901 - Subprojekt C4
- _id: '4'
name: SFB 901 - Project Area C
- _id: '25'
call_identifier: 5G PPP Phase 1
grant_number: '671517'
name: 'SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized
Networks'
publication: Proceedings of the 17th IEEE/ACM International Symposium on Cluster,
Cloud and Grid Computing (CCGrid 2017)
status: public
title: Joint Optimization of Scaling and Placement of Virtual Network Services
type: conference
urn: '873'
user_id: '31764'
year: '2017'
...
---
_id: '981'
abstract:
- lang: eng
text: "Benchmarking and profiling virtual network functions (VNFs) generates input\r\nknowledge
for resource management decisions taken by \r\nmanagement and orchestration systems.
\r\nSuch VNFs are usually not executed in isolation but are often deployed as
part of a service function chain (SFC) that connects single functions into complex
\r\nstructures. To manage such chains, isolated performance\r\nprofiles of single
functions have to be combined to get insights into \r\nthe overall behavior of
an SFC. This becomes particularly\r\nchallenging in highly agile DevOps environments
in which profiling\r\nprocesses need to be fully automated and detailed insights
about a chain's\r\ninternal structures are not always available. \r\n\r\nIn this
paper, we introduce a\r\nfully automatable, flexible, and platform-agnostic profiling\r\nsystem
that allows to profile entire SFCs at once. This obviates \r\nmanual modeling
procedures to combine profiling results from single\r\nVNFs to reflect SFC performance.
\r\nWe use a case study with different SFC configurations to show that it\r\nis
hard to model the resulting SFC performance based on single-VNF measurements and
that\r\nperformance interactions between real, non-trivial functions that are
deployed in a\r\nchain exist. "
author:
- first_name: Manuel
full_name: Peuster, Manuel
id: '13271'
last_name: Peuster
- first_name: Holger
full_name: Karl, Holger
id: '126'
last_name: Karl
citation:
ama: 'Peuster M, Karl H. Profile Your Chains, Not Functions. Automated Network Service
Profiling in DevOps Environments. In: IEEE Conference on Network Function Virtualisation
and Software Defined Networks (NFV-SDN). Berlin; 2017. doi:10.1109/NFV-SDN.2017.8169826'
apa: Peuster, M., & Karl, H. (2017). Profile Your Chains, Not Functions. Automated
Network Service Profiling in DevOps Environments. In IEEE Conference on Network
Function Virtualisation and Software Defined Networks (NFV-SDN). Berlin. https://doi.org/10.1109/NFV-SDN.2017.8169826
bibtex: '@inproceedings{Peuster_Karl_2017, place={Berlin}, title={Profile Your Chains,
Not Functions. Automated Network Service Profiling in DevOps Environments}, DOI={10.1109/NFV-SDN.2017.8169826},
booktitle={IEEE Conference on Network Function Virtualisation and Software Defined
Networks (NFV-SDN)}, author={Peuster, Manuel and Karl, Holger}, year={2017} }'
chicago: Peuster, Manuel, and Holger Karl. “Profile Your Chains, Not Functions.
Automated Network Service Profiling in DevOps Environments.” In IEEE Conference
on Network Function Virtualisation and Software Defined Networks (NFV-SDN).
Berlin, 2017. https://doi.org/10.1109/NFV-SDN.2017.8169826.
ieee: M. Peuster and H. Karl, “Profile Your Chains, Not Functions. Automated Network
Service Profiling in DevOps Environments,” in IEEE Conference on Network Function
Virtualisation and Software Defined Networks (NFV-SDN), Berlin, 2017.
mla: Peuster, Manuel, and Holger Karl. “Profile Your Chains, Not Functions. Automated
Network Service Profiling in DevOps Environments.” IEEE Conference on Network
Function Virtualisation and Software Defined Networks (NFV-SDN), 2017, doi:10.1109/NFV-SDN.2017.8169826.
short: 'M. Peuster, H. Karl, in: IEEE Conference on Network Function Virtualisation
and Software Defined Networks (NFV-SDN), Berlin, 2017.'
conference:
location: Berlin
name: IEEE Conference on Network Function Virtualisation and Software Defined Networks
(NFV-SDN)
date_created: 2017-11-27T10:22:29Z
date_updated: 2022-01-06T07:04:22Z
ddc:
- '004'
department:
- _id: '75'
doi: 10.1109/NFV-SDN.2017.8169826
file:
- access_level: open_access
content_type: application/pdf
creator: peuster
date_created: 2018-07-05T11:14:00Z
date_updated: 2018-07-05T11:14:00Z
file_id: '3431'
file_name: main_ris.pdf
file_size: 2642306
relation: main_file
file_date_updated: 2018-07-05T11:14:00Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
place: Berlin
project:
- _id: '25'
call_identifier: 5G PPP Phase 1
grant_number: '671517'
name: 'SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized
Networks'
- _id: '1'
name: SFB 901
- _id: '4'
name: SFB 901 - Project Area C
- _id: '16'
name: SFB 901 - Subproject C4
publication: IEEE Conference on Network Function Virtualisation and Software Defined
Networks (NFV-SDN)
publication_status: published
status: public
title: Profile Your Chains, Not Functions. Automated Network Service Profiling in
DevOps Environments
type: conference
urn: '9810'
user_id: '13271'
year: '2017'
...
---
_id: '9862'
abstract:
- lang: eng
text: 'In order to improve the credibility of modern simulation tools, uncertainties
of different kinds have to be considered. This work is focused on epistemic uncertainties
in the framework of continuum mechanics, which are taken into account by fuzzy
analysis. The underlying min-max optimization problem of the extension principle
is approximated by α-discretization, resulting in a separation of minimum and
maximum problems. To become more universal, so-called quantities of interest are
employed, which allow a general formulation for the target problem of interest.
In this way, the relation to parameter identification problems based on least-squares
functions is highlighted. The solutions of the related optimization problems with
simple constraints are obtained with a gradient-based scheme, which is derived
from a sensitvity analysis for the target problem by means of a variational formulation.
Two numerical examples for the fuzzy analysis of material parameters are concerned
with a necking problem at large strain elastoplasticity and a perforated strip
at large strain hyperelasticity to demonstrate the versatility of the proposed
variational formulation. '
author:
- first_name: Rolf
full_name: Mahnken, Rolf
last_name: Mahnken
citation:
ama: Mahnken R. “A variational formulation for fuzzy analysis in continuum mechanics.”
Mathematics and Mechanics of complex systems. 2017;5(3-4).
apa: Mahnken, R. (2017). “A variational formulation for fuzzy analysis in continuum
mechanics.” Mathematics and Mechanics of Complex Systems, 5(3–4).
bibtex: '@article{Mahnken_2017, title={“A variational formulation for fuzzy analysis
in continuum mechanics”}, volume={5}, number={3–4}, journal={Mathematics and Mechanics
of complex systems}, author={Mahnken, Rolf}, year={2017} }'
chicago: Mahnken, Rolf. “‘A Variational Formulation for Fuzzy Analysis in Continuum
Mechanics.’” Mathematics and Mechanics of Complex Systems 5, no. 3–4 (2017).
ieee: R. Mahnken, “‘A variational formulation for fuzzy analysis in continuum mechanics,’”
Mathematics and Mechanics of complex systems, vol. 5, no. 3–4, 2017.
mla: Mahnken, Rolf. “‘A Variational Formulation for Fuzzy Analysis in Continuum
Mechanics.’” Mathematics and Mechanics of Complex Systems, vol. 5, no.
3–4, 2017.
short: R. Mahnken, Mathematics and Mechanics of Complex Systems 5 (2017).
date_created: 2019-05-20T11:36:47Z
date_updated: 2019-05-27T12:54:35Z
department:
- _id: '154'
intvolume: ' 5'
issue: 3-4
keyword:
- fuzzy analysis
- α-level optimization
- quantities of interest
- optimization with simple constraints
- large strain elasticity
- large strain elastoplasticity
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://msp.org/memocs/2017/5-3/memocs-v5-n3-p03-s.pdf
oa: '1'
publication: Mathematics and Mechanics of complex systems
publication_identifier:
issn:
- ' 2325-3444'
publication_status: published
status: public
title: '"A variational formulation for fuzzy analysis in continuum mechanics"'
type: journal_article
user_id: '78813'
volume: 5
year: '2017'
...
---
_id: '5594'
abstract:
- lang: eng
text: Design science is a fundamental research stream that contends its position
in the information systems discipline. While ongoing debates address the relative
importance of design science contributions in the information systems community,
insights into the scientific impact of design science research (DSR) are missing
and this lack of understanding arguably poses challenges to an informed discourse.
To identify the most influential papers and those factors that explain their scientific
impact, this paper presents an exploratory study of the scientific impact of DSR
papers published in the AIS Senior Scholars' Basket of Journals. We uncover the
current DSR landscape by taking stock of influential papers and theories and develop
a model to explain the scientific impact of DSR papers. Our findings show that
scientific impact is significantly explained by theorization and novelty. We discuss
how the implications of our work can be projected on the overarching discourse
on DSR.
author:
- first_name: Gerit
full_name: Wagner, Gerit
last_name: Wagner
- first_name: Julian
full_name: Prester, Julian
last_name: Prester
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: 'Wagner G, Prester J, Schryen G. Exploring the Scientific Impact of Information
Systems Design Science Research: A Scientometric Study. In: 38th International
Conference on Information Systems. ; 2017.'
apa: 'Wagner, G., Prester, J., & Schryen, G. (2017). Exploring the Scientific
Impact of Information Systems Design Science Research: A Scientometric Study.
In 38th International Conference on Information Systems. Seoul, South Korea.'
bibtex: '@inproceedings{Wagner_Prester_Schryen_2017, title={Exploring the Scientific
Impact of Information Systems Design Science Research: A Scientometric Study},
booktitle={38th International Conference on Information Systems}, author={Wagner,
Gerit and Prester, Julian and Schryen, Guido}, year={2017} }'
chicago: 'Wagner, Gerit, Julian Prester, and Guido Schryen. “Exploring the Scientific
Impact of Information Systems Design Science Research: A Scientometric Study.”
In 38th International Conference on Information Systems, 2017.'
ieee: 'G. Wagner, J. Prester, and G. Schryen, “Exploring the Scientific Impact of
Information Systems Design Science Research: A Scientometric Study,” in 38th
International Conference on Information Systems, Seoul, South Korea, 2017.'
mla: 'Wagner, Gerit, et al. “Exploring the Scientific Impact of Information Systems
Design Science Research: A Scientometric Study.” 38th International Conference
on Information Systems, 2017.'
short: 'G. Wagner, J. Prester, G. Schryen, in: 38th International Conference on
Information Systems, 2017.'
conference:
location: Seoul, South Korea
name: 38th International Conference on Information Systems
date_created: 2018-11-14T11:33:56Z
date_updated: 2022-01-06T07:02:05Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-07T11:31:37Z
date_updated: 2018-12-13T15:07:05Z
file_id: '6026'
file_name: ICIS2017-Revision.pdf
file_size: 223790
relation: main_file
file_date_updated: 2018-12-13T15:07:05Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
publication: 38th International Conference on Information Systems
status: public
title: 'Exploring the Scientific Impact of Information Systems Design Science Research:
A Scientometric Study'
type: conference
user_id: '61579'
year: '2017'
...
---
_id: '5633'
abstract:
- lang: eng
text: 'Literature reviews (LRs) are recognized for their increasing impact in the
information systems literature. Methodologists have drawn attention to the question
of how we can leverage the value of LRs to preserve and generate knowledge. The
panelists who participated in the discussion of ?Standalone Literature Reviews
in IS Research: What Can Be Learnt from the Past and Other Fields?? at ICIS 2016
in Dublin acknowledged this significant issue and debated a) what the IS field
can learn from other fields and where IS-specific challenges occur, b) how the
IS field should move forward to foster the genre of LRs, and c) what best practices
are to train doctoral IS students in publishing LRs. This article reports the
key takeaways of this panel discussion. Guidance for IS scholars is provided on
how to conduct LRs that contribute to the cumulative knowledge development within
and across the IS field to best prepare the next generation of IS scholars.'
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
- first_name: Alexander
full_name: Benlian, Alexander
last_name: Benlian
- first_name: Frantz
full_name: Rowe, Frantz
last_name: Rowe
- first_name: Gregor
full_name: Shirley, Gregor
last_name: Shirley
- first_name: Kai
full_name: Larsen, Kai
last_name: Larsen
- first_name: Stacie
full_name: Petter, Stacie
last_name: Petter
- first_name: Guy
full_name: Par{\'e}, Guy
last_name: Par{\'e}
- first_name: Gerit
full_name: Wagner, Gerit
last_name: Wagner
- first_name: Steffi
full_name: Haag, Steffi
last_name: Haag
- first_name: Emrah
full_name: Yasasin, Emrah
last_name: Yasasin
citation:
ama: 'Schryen G, Benlian A, Rowe F, et al. Literature Reviews in IS Research: What
Can Be Learnt from the Past and Other Fields? Communications of the AIS.
2017;40:557-569.'
apa: 'Schryen, G., Benlian, A., Rowe, F., Shirley, G., Larsen, K., Petter, S., …
Yasasin, E. (2017). Literature Reviews in IS Research: What Can Be Learnt from
the Past and Other Fields? Communications of the AIS, 40, 557–569.'
bibtex: '@article{Schryen_Benlian_Rowe_Shirley_Larsen_Petter_Par{\’e}_Wagner_Haag_Yasasin_2017,
title={Literature Reviews in IS Research: What Can Be Learnt from the Past and
Other Fields?}, volume={40}, journal={Communications of the AIS}, publisher={Association
for Information Systems (AIS)}, author={Schryen, Guido and Benlian, Alexander
and Rowe, Frantz and Shirley, Gregor and Larsen, Kai and Petter, Stacie and Par{\’e},
Guy and Wagner, Gerit and Haag, Steffi and Yasasin, Emrah}, year={2017}, pages={557–569}
}'
chicago: 'Schryen, Guido, Alexander Benlian, Frantz Rowe, Gregor Shirley, Kai Larsen,
Stacie Petter, Guy Par{\’e}, Gerit Wagner, Steffi Haag, and Emrah Yasasin. “Literature
Reviews in IS Research: What Can Be Learnt from the Past and Other Fields?” Communications
of the AIS 40 (2017): 557–69.'
ieee: 'G. Schryen et al., “Literature Reviews in IS Research: What Can Be
Learnt from the Past and Other Fields?,” Communications of the AIS, vol.
40, pp. 557–569, 2017.'
mla: 'Schryen, Guido, et al. “Literature Reviews in IS Research: What Can Be Learnt
from the Past and Other Fields?” Communications of the AIS, vol. 40, Association
for Information Systems (AIS), 2017, pp. 557–69.'
short: G. Schryen, A. Benlian, F. Rowe, G. Shirley, K. Larsen, S. Petter, G. Par{\’e},
G. Wagner, S. Haag, E. Yasasin, Communications of the AIS 40 (2017) 557–569.
date_created: 2018-11-14T14:25:40Z
date_updated: 2022-01-06T07:02:14Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-07T11:33:59Z
date_updated: 2018-12-13T15:07:15Z
file_id: '6027'
file_name: Schryen et al. (forthcoming), Literature Reviews in IS Research, What
Can Be Learnt from the Past and Other Fields, Communications of th.pdf
file_size: 361850
relation: main_file
file_date_updated: 2018-12-13T15:07:15Z
has_accepted_license: '1'
intvolume: ' 40'
keyword:
- Literature Review
- Review Methodology
- Research Methodology
- Doctoral Training
language:
- iso: eng
oa: '1'
page: 557 - 569
publication: Communications of the AIS
publication_identifier:
issn:
- 1529-3181
publisher: Association for Information Systems (AIS)
status: public
title: 'Literature Reviews in IS Research: What Can Be Learnt from the Past and Other
Fields?'
type: journal_article
user_id: '61579'
volume: 40
year: '2017'
...
---
_id: '5671'
abstract:
- lang: eng
text: Multi-attribute value theory (MAVT)-based recommender systems have been proposed
for dealing with issues of existing recommender systems, such as the cold-start
problem and changing preferences. However, as we argue in this paper, existing
MAVT-based methods for measuring attribute importance weights do not fit the shopping
tasks for which recommender systems are typically used. These methods assume well-trained
decision makers who are willing to invest time and cognitive effort, and who are
familiar with the attributes describing the available alternatives and the ranges
of these attribute levels. Yet, recommender systems are most often used by consumers
who are usually not familiar with the available attributes and ranges and who
wish to save time and effort. Against this background, we develop a new method,
based on a product configuration process, which is tailored to the characteristics
of these particular decision makers. We empirically compare our method to SWING,
ranking-based conjoint analysis and TRADEOFF in a between-subjects laboratory
experiment with 153 participants. Results indicate that our proposed method performs
better than TRADEOFF and CONJOINT and at least as well as SWING in terms of recommendation
accuracy, better than SWING and TRADEOFF and at least as well as CONJOINT in terms
of cognitive load, and that participants were faster with our method than with
any other method. We conclude that our method is a promising option to help support
consumers' decision processes in e-commerce shopping tasks.
author:
- first_name: Michael
full_name: Scholz, Michael
last_name: Scholz
- first_name: Verena
full_name: Dorner, Verena
last_name: Dorner
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
- first_name: Alexander
full_name: Benlian, Alexander
last_name: Benlian
citation:
ama: Scholz M, Dorner V, Schryen G, Benlian A. A configuration-based recommender
system for supporting e-commerce decisions. European Journal of Operational
Research. 2017;259(1):205-215.
apa: Scholz, M., Dorner, V., Schryen, G., & Benlian, A. (2017). A configuration-based
recommender system for supporting e-commerce decisions. European Journal of
Operational Research, 259(1), 205–215.
bibtex: '@article{Scholz_Dorner_Schryen_Benlian_2017, title={A configuration-based
recommender system for supporting e-commerce decisions}, volume={259}, number={1},
journal={European Journal of Operational Research}, publisher={Elsevier}, author={Scholz,
Michael and Dorner, Verena and Schryen, Guido and Benlian, Alexander}, year={2017},
pages={205–215} }'
chicago: 'Scholz, Michael, Verena Dorner, Guido Schryen, and Alexander Benlian.
“A Configuration-Based Recommender System for Supporting e-Commerce Decisions.”
European Journal of Operational Research 259, no. 1 (2017): 205–15.'
ieee: M. Scholz, V. Dorner, G. Schryen, and A. Benlian, “A configuration-based recommender
system for supporting e-commerce decisions,” European Journal of Operational
Research, vol. 259, no. 1, pp. 205–215, 2017.
mla: Scholz, Michael, et al. “A Configuration-Based Recommender System for Supporting
e-Commerce Decisions.” European Journal of Operational Research, vol. 259,
no. 1, Elsevier, 2017, pp. 205–15.
short: M. Scholz, V. Dorner, G. Schryen, A. Benlian, European Journal of Operational
Research 259 (2017) 205–215.
date_created: 2018-11-14T15:06:18Z
date_updated: 2022-01-06T07:02:27Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-07T11:30:59Z
date_updated: 2018-12-13T15:06:56Z
file_id: '6025'
file_name: EJOR article.pdf
file_size: 762889
relation: main_file
file_date_updated: 2018-12-13T15:06:56Z
has_accepted_license: '1'
intvolume: ' 259'
issue: '1'
keyword:
- E-Commerce
- Recommender System
- Attribute Weights
- Configuration System
- Decision Support
language:
- iso: eng
oa: '1'
page: 205 - 215
publication: European Journal of Operational Research
publisher: Elsevier
status: public
title: A configuration-based recommender system for supporting e-commerce decisions
type: journal_article
user_id: '61579'
volume: 259
year: '2017'
...
---
_id: '680'
author:
- first_name: Manuel
full_name: Peter, Manuel
last_name: Peter
- first_name: Andre
full_name: Hildebrandt, Andre
last_name: Hildebrandt
- first_name: Christian
full_name: Schlickriede, Christian
id: '59792'
last_name: Schlickriede
- first_name: Kimia
full_name: Gharib, Kimia
last_name: Gharib
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Stefan
full_name: Linden, Stefan
last_name: Linden
citation:
ama: Peter M, Hildebrandt A, Schlickriede C, et al. Directional Emission from Dielectric
Leaky-Wave Nanoantennas. Nano Letters. 2017;17(7):4178-4183. doi:10.1021/acs.nanolett.7b00966
apa: Peter, M., Hildebrandt, A., Schlickriede, C., Gharib, K., Zentgraf, T., Förstner,
J., & Linden, S. (2017). Directional Emission from Dielectric Leaky-Wave Nanoantennas.
Nano Letters, 17(7), 4178–4183. https://doi.org/10.1021/acs.nanolett.7b00966
bibtex: '@article{Peter_Hildebrandt_Schlickriede_Gharib_Zentgraf_Förstner_Linden_2017,
title={Directional Emission from Dielectric Leaky-Wave Nanoantennas}, volume={17},
DOI={10.1021/acs.nanolett.7b00966},
number={7}, journal={Nano Letters}, publisher={American Chemical Society (ACS)},
author={Peter, Manuel and Hildebrandt, Andre and Schlickriede, Christian and Gharib,
Kimia and Zentgraf, Thomas and Förstner, Jens and Linden, Stefan}, year={2017},
pages={4178–4183} }'
chicago: 'Peter, Manuel, Andre Hildebrandt, Christian Schlickriede, Kimia Gharib,
Thomas Zentgraf, Jens Förstner, and Stefan Linden. “Directional Emission from
Dielectric Leaky-Wave Nanoantennas.” Nano Letters 17, no. 7 (2017): 4178–83.
https://doi.org/10.1021/acs.nanolett.7b00966.'
ieee: M. Peter et al., “Directional Emission from Dielectric Leaky-Wave Nanoantennas,”
Nano Letters, vol. 17, no. 7, pp. 4178–4183, 2017.
mla: Peter, Manuel, et al. “Directional Emission from Dielectric Leaky-Wave Nanoantennas.”
Nano Letters, vol. 17, no. 7, American Chemical Society (ACS), 2017, pp.
4178–83, doi:10.1021/acs.nanolett.7b00966.
short: M. Peter, A. Hildebrandt, C. Schlickriede, K. Gharib, T. Zentgraf, J. Förstner,
S. Linden, Nano Letters 17 (2017) 4178–4183.
date_created: 2017-11-13T07:36:01Z
date_updated: 2022-01-06T07:03:20Z
ddc:
- '530'
department:
- _id: '61'
- _id: '289'
doi: 10.1021/acs.nanolett.7b00966
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2018-08-16T08:07:31Z
date_updated: 2018-08-21T10:41:58Z
file_id: '3917'
file_name: 2017-08 Peter - Nano Letters - Directional Emission from Dielectric Leaky-Wave
Antennas.pdf
file_size: 3398275
relation: main_file
file_date_updated: 2018-08-21T10:41:58Z
has_accepted_license: '1'
intvolume: ' 17'
issue: '7'
keyword:
- tet_topic_opticalantenna
language:
- iso: eng
oa: '1'
page: 4178-4183
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '74'
name: TRR 142 - Subproject C4
publication: Nano Letters
publication_identifier:
issn:
- 1530-6984
- 1530-6992
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Directional Emission from Dielectric Leaky-Wave Nanoantennas
type: journal_article
urn: '6808'
user_id: '158'
volume: 17
year: '2017'
...
---
_id: '10594'
abstract:
- lang: eng
text: "Multiobjective optimization plays an increasingly important role in modern
applications, where several criteria are often of equal importance. The task in
multiobjective optimization and multiobjective optimal control is therefore to
compute\r\nthe set of optimal compromises (the Pareto set) between the conflicting
objectives.\r\n\r\nSince – in contrast to the solution of a single objective optimization
problem – the\r\nPareto set generally consists of an infinite number of solutions,
the computational\r\neffort can quickly become challenging. This is even more
the case when many problems have to be solved, when the number of objectives is
high, or when the objectives\r\nare costly to evaluate. Consequently, this thesis
is devoted to the identification and\r\nexploitation of structure both in the
Pareto set and the dynamics of the underlying\r\nmodel as well as to the development
of efficient algorithms for solving problems with\r\nadditional parameters, with
a high number of objectives or with PDE-constraints.\r\nThese three challenges
are addressed in three respective parts.\r\n\r\nIn the first part, predictor-corrector
methods are extended to entire Pareto sets.\r\nWhen certain smoothness assumptions
are satisfied, then the set of parameter dependent Pareto sets possesses additional
structure, i.e. it is a manifold. The tangent\r\nspace can be approximated numerically
which yields a direction for the predictor\r\nstep. In the corrector step, the
predicted set converges to the Pareto set at a new\r\nparameter value. The resulting
algorithm is applied to an example from autonomous\r\ndriving.\r\n\r\nIn the second
part, the hierarchical structure of Pareto sets is investigated. When\r\nconsidering
a subset of the objectives, the resulting solution is a subset of the Pareto\r\nset
of the original problem. Under additional smoothness assumptions, the respective
subsets are located on the boundary of the Pareto set of the full problem. This\r\nway,
the “skeleton” of a Pareto set can be computed and due to the exponential\r\nincrease
in computing time with the number of objectives, the computations of\r\nthese
subsets are significantly faster which is demonstrated using an example from\r\nindustrial
laundries.\r\n\r\nIn the third part, PDE-constrained multiobjective optimal control
problems are\r\naddressed by reduced order modeling methods. Reduced order models
exploit the\r\nstructure in the system dynamics, for example by describing the
dynamics of only the\r\nmost energetic modes. The model reduction introduces an
error in both the function values and their gradients, which has to be taken into
account in the development of\r\nalgorithms. Both scalarization and set-oriented
approaches are coupled with reduced\r\norder modeling. Convergence results are
presented and the numerical benefit is\r\ninvestigated. The algorithms are applied
to semi-linear heat flow problems as well\r\nas to the Navier-Stokes equations.\r\n"
author:
- first_name: Sebastian
full_name: Peitz, Sebastian
id: '47427'
last_name: Peitz
orcid: https://orcid.org/0000-0002-3389-793X
citation:
ama: Peitz S. Exploiting Structure in Multiobjective Optimization and Optimal
Control.; 2017. doi:10.17619/UNIPB/1-176
apa: Peitz, S. (2017). Exploiting structure in multiobjective optimization
and optimal control. https://doi.org/10.17619/UNIPB/1-176
bibtex: '@book{Peitz_2017, title={ Exploiting structure in multiobjective optimization
and optimal control}, DOI={10.17619/UNIPB/1-176},
author={Peitz, Sebastian}, year={2017} }'
chicago: Peitz, Sebastian. Exploiting Structure in Multiobjective Optimization
and Optimal Control, 2017. https://doi.org/10.17619/UNIPB/1-176.
ieee: S. Peitz, Exploiting structure in multiobjective optimization and optimal
control. 2017.
mla: Peitz, Sebastian. Exploiting Structure in Multiobjective Optimization
and Optimal Control. 2017, doi:10.17619/UNIPB/1-176.
short: S. Peitz, Exploiting Structure in Multiobjective Optimization and Optimal
Control, 2017.
date_created: 2019-07-10T08:12:22Z
date_updated: 2022-01-06T06:50:46Z
ddc:
- '510'
department:
- _id: '101'
doi: 10.17619/UNIPB/1-176
file:
- access_level: closed
content_type: application/pdf
creator: speitz
date_created: 2020-03-13T12:52:50Z
date_updated: 2020-03-13T12:52:50Z
file_id: '16298'
file_name: Dissertation_Peitz.pdf
file_size: 16636801
relation: main_file
success: 1
file_date_updated: 2020-03-13T12:52:50Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://d-nb.info/1139356542/34
oa: '1'
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication_status: published
status: public
title: " \tExploiting structure in multiobjective optimization and optimal control"
type: dissertation
user_id: '47427'
year: '2017'
...
---
_id: '1083'
abstract:
- lang: eng
text: In actual school choice applications the theoretical underpinnings of the
Boston School Choice Mechanism (BM) (complete information and rationality of the
agents) are often not given. We analyze the actual behavior of agents in such
a matching mechanism, using data from the matching mechanism currently used in
a clearinghouse at a faculty of Business Administration and Economics at a German
university, where a variant of the BM is used, and supplement this data with data
generated in a survey among students who participated in the clearinghouse. We
find that under the current mechanism over 70% of students act strategically.
Controlling for students' limited information, we find that they do act rationally
in their decision to act strategically. While students thus seem to react to the
incentives to act strategically under the BM, they do not seem to be able to use
this to their own advantage. However, those students acting in line with their
beliefs manage a significantly better personal outcome than those who do not.
We also run simulations by using a variant of the deferred acceptance algorithm,
adapted to our situation, to show that the use of a different algorithm may be
to the students' advantage.
author:
- first_name: Britta
full_name: Hoyer, Britta
id: '42447'
last_name: Hoyer
- first_name: Nadja
full_name: Stroh-Maraun, Nadja
id: '13264'
last_name: Stroh-Maraun
citation:
ama: Hoyer B, Stroh-Maraun N. Matching Strategies of Heterogeneous Agents under
Incomplete Information in a University Clearinghouse. Vol 110. CIE Working
Paper Series, Paderborn University; 2017.
apa: Hoyer, B., & Stroh-Maraun, N. (2017). Matching Strategies of Heterogeneous
Agents under Incomplete Information in a University Clearinghouse (Vol. 110).
CIE Working Paper Series, Paderborn University.
bibtex: '@book{Hoyer_Stroh-Maraun_2017, series={Working Papers CIE}, title={Matching
Strategies of Heterogeneous Agents under Incomplete Information in a University
Clearinghouse}, volume={110}, publisher={CIE Working Paper Series, Paderborn University},
author={Hoyer, Britta and Stroh-Maraun, Nadja}, year={2017}, collection={Working
Papers CIE} }'
chicago: Hoyer, Britta, and Nadja Stroh-Maraun. Matching Strategies of Heterogeneous
Agents under Incomplete Information in a University Clearinghouse. Vol. 110.
Working Papers CIE. CIE Working Paper Series, Paderborn University, 2017.
ieee: B. Hoyer and N. Stroh-Maraun, Matching Strategies of Heterogeneous Agents
under Incomplete Information in a University Clearinghouse, vol. 110. CIE
Working Paper Series, Paderborn University, 2017.
mla: Hoyer, Britta, and Nadja Stroh-Maraun. Matching Strategies of Heterogeneous
Agents under Incomplete Information in a University Clearinghouse. Vol. 110,
CIE Working Paper Series, Paderborn University, 2017.
short: B. Hoyer, N. Stroh-Maraun, Matching Strategies of Heterogeneous Agents under
Incomplete Information in a University Clearinghouse, CIE Working Paper Series,
Paderborn University, 2017.
date_created: 2017-12-20T16:21:51Z
date_updated: 2022-01-06T06:50:51Z
ddc:
- '040'
department:
- _id: '280'
- _id: '205'
- _id: '475'
file:
- access_level: closed
content_type: application/pdf
creator: nmaraun
date_created: 2018-08-15T07:33:12Z
date_updated: 2018-08-15T07:33:12Z
file_id: '3911'
file_name: Matching Strategies of Heterogeneous Agents under Incomplete Information
in a University Clearinghouse.pdf
file_size: 346752
relation: main_file
success: 1
file_date_updated: 2018-08-15T07:33:12Z
has_accepted_license: '1'
intvolume: ' 110'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://groups.uni-paderborn.de/wp-wiwi/RePEc/pdf/ciepap/WP110.pdf
oa: '1'
project:
- _id: '1'
name: SFB 901
- _id: '2'
name: SFB 901 - Project Area A
- _id: '7'
name: SFB 901 - Subproject A3
publisher: CIE Working Paper Series, Paderborn University
series_title: Working Papers CIE
status: public
title: Matching Strategies of Heterogeneous Agents under Incomplete Information in
a University Clearinghouse
type: working_paper
user_id: '42447'
volume: 110
year: '2017'
...
---
_id: '109'
author:
- first_name: Felix
full_name: Pauck, Felix
id: '22398'
last_name: Pauck
citation:
ama: Pauck F. Cooperative Static Analysis of Android Applications. Universität
Paderborn; 2017.
apa: Pauck, F. (2017). Cooperative static analysis of Android applications.
Universität Paderborn.
bibtex: '@book{Pauck_2017, title={Cooperative static analysis of Android applications},
publisher={Universität Paderborn}, author={Pauck, Felix}, year={2017} }'
chicago: Pauck, Felix. Cooperative Static Analysis of Android Applications.
Universität Paderborn, 2017.
ieee: F. Pauck, Cooperative static analysis of Android applications. Universität
Paderborn, 2017.
mla: Pauck, Felix. Cooperative Static Analysis of Android Applications. Universität
Paderborn, 2017.
short: F. Pauck, Cooperative Static Analysis of Android Applications, Universität
Paderborn, 2017.
date_created: 2017-10-17T12:41:12Z
date_updated: 2022-01-06T06:50:52Z
ddc:
- '000'
department:
- _id: '77'
file:
- access_level: open_access
content_type: application/pdf
creator: fpauck
date_created: 2019-08-07T08:55:58Z
date_updated: 2019-08-07T09:03:48Z
file_id: '12905'
file_name: fpauck_2017.pdf
file_size: 5093611
relation: main_file
title: Master's Thesis
file_date_updated: 2019-08-07T09:03:48Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
project:
- _id: '1'
name: SFB 901
- _id: '12'
name: SFB 901 - Subprojekt B4
- _id: '3'
name: SFB 901 - Project Area B
publisher: Universität Paderborn
status: public
supervisor:
- first_name: Heike
full_name: Wehrheim, Heike
id: '573'
last_name: Wehrheim
title: Cooperative static analysis of Android applications
type: mastersthesis
user_id: '22398'
year: '2017'
...
---
_id: '1095'
abstract:
- lang: eng
text: 'Many university students struggle with motivational problems, and gamification
has the potential to address these problems. However, using gamification currently
is rather tedious and time-consuming for instructors because current approaches
to gamification require instructors to engage in the time-consuming preparation
of course contents (e.g., for quizzes or mini-games). In reply to this issue,
we propose a “lean” approach to gamification, which relies on gamifying learning
activities rather than learning contents. The learning activities that are gamified
in the lean approach can typically be drawn from existing course syllabi (e.g.,
attend certain lectures, hand in assignments, read book chapters and articles).
Hence, compared to existing approaches, lean gamification substantially lowers
the time requirements posed on instructors for gamifying a given course. Drawing
on research on limited attention and the present bias, we provide the theoretical
foundation for the lean gamification approach. In addition, we present a mobile
application that implements lean gamification and outline a mixed-methods study
that is currently under way for evaluating whether lean gamification does indeed
have the potential to increase students’ motivation. We thereby hope to allow
more students and instructors to benefit from the advantages of gamification. '
author:
- first_name: Thomas
full_name: John, Thomas
id: '3952'
last_name: John
- first_name: Matthias
full_name: Feldotto, Matthias
id: '14052'
last_name: Feldotto
orcid: 0000-0003-1348-6516
- first_name: Paul
full_name: Hemsen, Paul
id: '22546'
last_name: Hemsen
- first_name: Katrin
full_name: Klingsieck, Katrin
last_name: Klingsieck
- first_name: Dennis
full_name: Kundisch, Dennis
id: '21117'
last_name: Kundisch
- first_name: Mike
full_name: Langendorf, Mike
last_name: Langendorf
citation:
ama: 'John T, Feldotto M, Hemsen P, Klingsieck K, Kundisch D, Langendorf M. Towards
a Lean Approach for Gamifying Education. In: Proceedings of the 25th European
Conference on Information Systems (ECIS). ; 2017:2970-2979.'
apa: John, T., Feldotto, M., Hemsen, P., Klingsieck, K., Kundisch, D., & Langendorf,
M. (2017). Towards a Lean Approach for Gamifying Education. In Proceedings
of the 25th European Conference on Information Systems (ECIS) (pp. 2970–2979).
bibtex: '@inproceedings{John_Feldotto_Hemsen_Klingsieck_Kundisch_Langendorf_2017,
title={Towards a Lean Approach for Gamifying Education}, booktitle={Proceedings
of the 25th European Conference on Information Systems (ECIS)}, author={John,
Thomas and Feldotto, Matthias and Hemsen, Paul and Klingsieck, Katrin and Kundisch,
Dennis and Langendorf, Mike}, year={2017}, pages={2970–2979} }'
chicago: John, Thomas, Matthias Feldotto, Paul Hemsen, Katrin Klingsieck, Dennis
Kundisch, and Mike Langendorf. “Towards a Lean Approach for Gamifying Education.”
In Proceedings of the 25th European Conference on Information Systems (ECIS),
2970–79, 2017.
ieee: T. John, M. Feldotto, P. Hemsen, K. Klingsieck, D. Kundisch, and M. Langendorf,
“Towards a Lean Approach for Gamifying Education,” in Proceedings of the 25th
European Conference on Information Systems (ECIS), 2017, pp. 2970–2979.
mla: John, Thomas, et al. “Towards a Lean Approach for Gamifying Education.” Proceedings
of the 25th European Conference on Information Systems (ECIS), 2017, pp. 2970–79.
short: 'T. John, M. Feldotto, P. Hemsen, K. Klingsieck, D. Kundisch, M. Langendorf,
in: Proceedings of the 25th European Conference on Information Systems (ECIS),
2017, pp. 2970–2979.'
date_created: 2018-01-05T08:39:41Z
date_updated: 2022-01-06T06:50:53Z
ddc:
- '000'
department:
- _id: '63'
- _id: '541'
- _id: '178'
- _id: '185'
file:
- access_level: closed
content_type: application/pdf
creator: feldi
date_created: 2018-10-31T17:02:07Z
date_updated: 2018-10-31T17:02:07Z
file_id: '5232'
file_name: TOWARDS A LEAN APPROACH TO GAMIFYING EDUCATION.pdf
file_size: 485333
relation: main_file
success: 1
file_date_updated: 2018-10-31T17:02:07Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://aisel.aisnet.org/ecis2017_rip/46
oa: '1'
page: 2970-2979
publication: Proceedings of the 25th European Conference on Information Systems (ECIS)
status: public
title: Towards a Lean Approach for Gamifying Education
type: conference
user_id: '14052'
year: '2017'
...
---
_id: '11717'
abstract:
- lang: eng
text: In this work, we address the limited availability of large annotated databases
for real-life audio event detection by utilizing the concept of transfer learning.
This technique aims to transfer knowledge from a source domain to a target domain,
even if source and target have different feature distributions and label sets.
We hypothesize that all acoustic events share the same inventory of basic acoustic
building blocks and differ only in the temporal order of these acoustic units.
We then construct a deep neural network with convolutional layers for extracting
the acoustic units and a recurrent layer for capturing the temporal order. Under
the above hypothesis, transfer learning from a source to a target domain with
a different acoustic event inventory is realized by transferring the convolutional
layers from the source to the target domain. The recurrent layer is, however,
learnt directly from the target domain. Experiments on the transfer from a synthetic
source database to the reallife target database of DCASE 2016 demonstrate that
transfer learning leads to improved detection performance on average. However,
the successful transfer to detect events which are very different from what was
seen in the source domain, could not be verified.
author:
- first_name: Prerna
full_name: Arora, Prerna
last_name: Arora
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Arora P, Haeb-Umbach R. A Study on Transfer Learning for Acoustic Event Detection
in a Real Life Scenario. In: IEEE 19th International Workshop on Multimedia
Signal Processing (MMSP). ; 2017.'
apa: Arora, P., & Haeb-Umbach, R. (2017). A Study on Transfer Learning for Acoustic
Event Detection in a Real Life Scenario. In IEEE 19th International Workshop
on Multimedia Signal Processing (MMSP).
bibtex: '@inproceedings{Arora_Haeb-Umbach_2017, title={A Study on Transfer Learning
for Acoustic Event Detection in a Real Life Scenario}, booktitle={IEEE 19th International
Workshop on Multimedia Signal Processing (MMSP)}, author={Arora, Prerna and Haeb-Umbach,
Reinhold}, year={2017} }'
chicago: Arora, Prerna, and Reinhold Haeb-Umbach. “A Study on Transfer Learning
for Acoustic Event Detection in a Real Life Scenario.” In IEEE 19th International
Workshop on Multimedia Signal Processing (MMSP), 2017.
ieee: P. Arora and R. Haeb-Umbach, “A Study on Transfer Learning for Acoustic Event
Detection in a Real Life Scenario,” in IEEE 19th International Workshop on
Multimedia Signal Processing (MMSP), 2017.
mla: Arora, Prerna, and Reinhold Haeb-Umbach. “A Study on Transfer Learning for
Acoustic Event Detection in a Real Life Scenario.” IEEE 19th International
Workshop on Multimedia Signal Processing (MMSP), 2017.
short: 'P. Arora, R. Haeb-Umbach, in: IEEE 19th International Workshop on Multimedia
Signal Processing (MMSP), 2017.'
date_created: 2019-07-12T05:26:54Z
date_updated: 2022-01-06T06:51:07Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2017/MMSP_2017_AroraHaeb.pdf
oa: '1'
publication: IEEE 19th International Workshop on Multimedia Signal Processing (MMSP)
related_material:
link:
- description: Poster
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2017/MMSP_2017_AroraHaeb_poster.pdf
status: public
title: A Study on Transfer Learning for Acoustic Event Detection in a Real Life Scenario
type: conference
user_id: '44006'
year: '2017'
...
---
_id: '11735'
abstract:
- lang: eng
text: This report describes the computation of gradients by algorithmic differentiation
for statistically optimum beamforming operations. Especially the derivation of
complex-valued functions is a key component of this approach. Therefore the real-valued
algorithmic differentiation is extended via the complex-valued chain rule. In
addition to the basic mathematic operations the derivative of the eigenvalue problem
with complex-valued eigenvectors is one of the key results of this report. The
potential of this approach is shown with experimental results on the CHiME-3 challenge
database. There, the beamforming task is used as a front-end for an ASR system.
With the developed derivatives a joint optimization of a speech enhancement and
speech recognition system w.r.t. the recognition optimization criterion is possible.
author:
- first_name: Christoph
full_name: Boeddeker, Christoph
id: '40767'
last_name: Boeddeker
- first_name: Patrick
full_name: Hanebrink, Patrick
last_name: Hanebrink
- first_name: Lukas
full_name: Drude, Lukas
id: '11213'
last_name: Drude
- first_name: Jahn
full_name: Heymann, Jahn
id: '9168'
last_name: Heymann
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: Boeddeker C, Hanebrink P, Drude L, Heymann J, Haeb-Umbach R. On the Computation
of Complex-Valued Gradients with Application to Statistically Optimum Beamforming.;
2017.
apa: Boeddeker, C., Hanebrink, P., Drude, L., Heymann, J., & Haeb-Umbach, R.
(2017). On the Computation of Complex-valued Gradients with Application to
Statistically Optimum Beamforming.
bibtex: '@book{Boeddeker_Hanebrink_Drude_Heymann_Haeb-Umbach_2017, title={On the
Computation of Complex-valued Gradients with Application to Statistically Optimum
Beamforming}, author={Boeddeker, Christoph and Hanebrink, Patrick and Drude, Lukas
and Heymann, Jahn and Haeb-Umbach, Reinhold}, year={2017} }'
chicago: Boeddeker, Christoph, Patrick Hanebrink, Lukas Drude, Jahn Heymann, and
Reinhold Haeb-Umbach. On the Computation of Complex-Valued Gradients with Application
to Statistically Optimum Beamforming, 2017.
ieee: C. Boeddeker, P. Hanebrink, L. Drude, J. Heymann, and R. Haeb-Umbach, On
the Computation of Complex-valued Gradients with Application to Statistically
Optimum Beamforming. 2017.
mla: Boeddeker, Christoph, et al. On the Computation of Complex-Valued Gradients
with Application to Statistically Optimum Beamforming. 2017.
short: C. Boeddeker, P. Hanebrink, L. Drude, J. Heymann, R. Haeb-Umbach, On the
Computation of Complex-Valued Gradients with Application to Statistically Optimum
Beamforming, 2017.
date_created: 2019-07-12T05:27:15Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2017/ArXiv_2017_BoeddekerHanebrinkHaeb_Article.pdf
oa: '1'
status: public
title: On the Computation of Complex-valued Gradients with Application to Statistically
Optimum Beamforming
type: report
user_id: '40767'
year: '2017'
...
---
_id: '11736'
abstract:
- lang: eng
text: In this paper we show how a neural network for spectral mask estimation for
an acoustic beamformer can be optimized by algorithmic differentiation. Using
the beamformer output SNR as the objective function to maximize, the gradient
is propagated through the beamformer all the way to the neural network which provides
the clean speech and noise masks from which the beamformer coefficients are estimated
by eigenvalue decomposition. A key theoretical result is the derivative of an
eigenvalue problem involving complex-valued eigenvectors. Experimental results
on the CHiME-3 challenge database demonstrate the effectiveness of the approach.
The tools developed in this paper are a key component for an end-to-end optimization
of speech enhancement and speech recognition.
author:
- first_name: Christoph
full_name: Boeddeker, Christoph
id: '40767'
last_name: Boeddeker
- first_name: Patrick
full_name: Hanebrink, Patrick
last_name: Hanebrink
- first_name: Lukas
full_name: Drude, Lukas
id: '11213'
last_name: Drude
- first_name: Jahn
full_name: Heymann, Jahn
id: '9168'
last_name: Heymann
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Boeddeker C, Hanebrink P, Drude L, Heymann J, Haeb-Umbach R. Optimizing Neural-Network
Supported Acoustic Beamforming by Algorithmic Differentiation. In: Proc. IEEE
Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP). ; 2017.'
apa: Boeddeker, C., Hanebrink, P., Drude, L., Heymann, J., & Haeb-Umbach, R.
(2017). Optimizing Neural-Network Supported Acoustic Beamforming by Algorithmic
Differentiation. In Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal
Processing (ICASSP).
bibtex: '@inproceedings{Boeddeker_Hanebrink_Drude_Heymann_Haeb-Umbach_2017, title={Optimizing
Neural-Network Supported Acoustic Beamforming by Algorithmic Differentiation},
booktitle={Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP)},
author={Boeddeker, Christoph and Hanebrink, Patrick and Drude, Lukas and Heymann,
Jahn and Haeb-Umbach, Reinhold}, year={2017} }'
chicago: Boeddeker, Christoph, Patrick Hanebrink, Lukas Drude, Jahn Heymann, and
Reinhold Haeb-Umbach. “Optimizing Neural-Network Supported Acoustic Beamforming
by Algorithmic Differentiation.” In Proc. IEEE Intl. Conf. on Acoustics, Speech
and Signal Processing (ICASSP), 2017.
ieee: C. Boeddeker, P. Hanebrink, L. Drude, J. Heymann, and R. Haeb-Umbach, “Optimizing
Neural-Network Supported Acoustic Beamforming by Algorithmic Differentiation,”
in Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP),
2017.
mla: Boeddeker, Christoph, et al. “Optimizing Neural-Network Supported Acoustic
Beamforming by Algorithmic Differentiation.” Proc. IEEE Intl. Conf. on Acoustics,
Speech and Signal Processing (ICASSP), 2017.
short: 'C. Boeddeker, P. Hanebrink, L. Drude, J. Heymann, R. Haeb-Umbach, in: Proc.
IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP), 2017.'
date_created: 2019-07-12T05:27:16Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2017/icassp_2017_boeddeker_paper.pdf
oa: '1'
publication: Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP)
status: public
title: Optimizing Neural-Network Supported Acoustic Beamforming by Algorithmic Differentiation
type: conference
user_id: '44006'
year: '2017'
...
---
_id: '11737'
abstract:
- lang: eng
text: The benefits of both a logarithmic spectral amplitude (LSA) estimation and
a modeling in a generalized spectral domain (where short-time amplitudes are raised
to a generalized power exponent, not restricted to magnitude or power spectrum)
are combined in this contribution to achieve a better tradeoff between speech
quality and noise suppression in single-channel speech enhancement. A novel gain
function is derived to enhance the logarithmic generalized spectral amplitudes
of noisy speech. Experiments on the CHiME-3 dataset show that it outperforms the
famous minimum mean squared error (MMSE) LSA gain function of Ephraim and Malah
in terms of noise suppression by 1.4 dB, while the good speech quality of the
MMSE-LSA estimator is maintained.
author:
- first_name: Alleksej
full_name: Chinaev, Alleksej
last_name: Chinaev
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Chinaev A, Haeb-Umbach R. A Generalized Log-Spectral Amplitude Estimator for
Single-Channel Speech Enhancement. In: Proc. IEEE Intl. Conf. on Acoustics,
Speech and Signal Processing (ICASSP). ; 2017.'
apa: Chinaev, A., & Haeb-Umbach, R. (2017). A Generalized Log-Spectral Amplitude
Estimator for Single-Channel Speech Enhancement. In Proc. IEEE Intl. Conf.
on Acoustics, Speech and Signal Processing (ICASSP).
bibtex: '@inproceedings{Chinaev_Haeb-Umbach_2017, title={A Generalized Log-Spectral
Amplitude Estimator for Single-Channel Speech Enhancement}, booktitle={Proc. IEEE
Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP)}, author={Chinaev,
Alleksej and Haeb-Umbach, Reinhold}, year={2017} }'
chicago: Chinaev, Alleksej, and Reinhold Haeb-Umbach. “A Generalized Log-Spectral
Amplitude Estimator for Single-Channel Speech Enhancement.” In Proc. IEEE Intl.
Conf. on Acoustics, Speech and Signal Processing (ICASSP), 2017.
ieee: A. Chinaev and R. Haeb-Umbach, “A Generalized Log-Spectral Amplitude Estimator
for Single-Channel Speech Enhancement,” in Proc. IEEE Intl. Conf. on Acoustics,
Speech and Signal Processing (ICASSP), 2017.
mla: Chinaev, Alleksej, and Reinhold Haeb-Umbach. “A Generalized Log-Spectral Amplitude
Estimator for Single-Channel Speech Enhancement.” Proc. IEEE Intl. Conf. on
Acoustics, Speech and Signal Processing (ICASSP), 2017.
short: 'A. Chinaev, R. Haeb-Umbach, in: Proc. IEEE Intl. Conf. on Acoustics, Speech
and Signal Processing (ICASSP), 2017.'
date_created: 2019-07-12T05:27:17Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2017/ChinHaeb17.pdf
oa: '1'
publication: Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP)
related_material:
link:
- description: Slides
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2017/ChinHaeb17_Slides.pdf
status: public
title: A Generalized Log-Spectral Amplitude Estimator for Single-Channel Speech Enhancement
type: conference
user_id: '44006'
year: '2017'
...
---
_id: '11754'
abstract:
- lang: eng
text: Recent advances in discriminatively trained mask estimation networks to extract
a single source utilizing beamforming techniques demonstrate, that the integration
of statistical models and deep neural networks (DNNs) are a promising approach
for robust automatic speech recognition (ASR) applications. In this contribution
we demonstrate how discriminatively trained embeddings on spectral features can
be tightly integrated into statistical model-based source separation to separate
and transcribe overlapping speech. Good generalization to unseen spatial configurations
is achieved by estimating a statistical model at test time, while still leveraging
discriminative training of deep clustering embeddings on a separate training set.
We formulate an expectation maximization (EM) algorithm which jointly estimates
a model for deep clustering embeddings and complex-valued spatial observations
in the short time Fourier transform (STFT) domain at test time. Extensive simulations
confirm, that the integrated model outperforms (a) a deep clustering model with
a subsequent beamforming step and (b) an EM-based model with a beamforming step
alone in terms of signal to distortion ratio (SDR) and perceptually motivated
metric (PESQ) gains. ASR results on a reverberated dataset further show, that
the aforementioned gains translate to reduced word error rates (WERs) even in
reverberant environments.
author:
- first_name: Lukas
full_name: Drude, Lukas
id: '11213'
last_name: Drude
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Drude L, Haeb-Umbach R. Tight integration of spatial and spectral features
for BSS with Deep Clustering embeddings. In: INTERSPEECH 2017, Stockholm, Schweden.
; 2017.'
apa: Drude, L., & Haeb-Umbach, R. (2017). Tight integration of spatial and spectral
features for BSS with Deep Clustering embeddings. In INTERSPEECH 2017, Stockholm,
Schweden.
bibtex: '@inproceedings{Drude_Haeb-Umbach_2017, title={Tight integration of spatial
and spectral features for BSS with Deep Clustering embeddings}, booktitle={INTERSPEECH
2017, Stockholm, Schweden}, author={Drude, Lukas and Haeb-Umbach, Reinhold}, year={2017}
}'
chicago: Drude, Lukas, and Reinhold Haeb-Umbach. “Tight Integration of Spatial and
Spectral Features for BSS with Deep Clustering Embeddings.” In INTERSPEECH
2017, Stockholm, Schweden, 2017.
ieee: L. Drude and R. Haeb-Umbach, “Tight integration of spatial and spectral features
for BSS with Deep Clustering embeddings,” in INTERSPEECH 2017, Stockholm, Schweden,
2017.
mla: Drude, Lukas, and Reinhold Haeb-Umbach. “Tight Integration of Spatial and Spectral
Features for BSS with Deep Clustering Embeddings.” INTERSPEECH 2017, Stockholm,
Schweden, 2017.
short: 'L. Drude, R. Haeb-Umbach, in: INTERSPEECH 2017, Stockholm, Schweden, 2017.'
date_created: 2019-07-12T05:27:37Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2017/INTERSPEECH_2017_Drude_paper.pdf
oa: '1'
publication: INTERSPEECH 2017, Stockholm, Schweden
related_material:
link:
- description: Slides
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2017/INTERSPEECH_2017_Drude_slides.pdf
status: public
title: Tight integration of spatial and spectral features for BSS with Deep Clustering
embeddings
type: conference
user_id: '44006'
year: '2017'
...
---
_id: '11770'
abstract:
- lang: eng
text: 'In this contribution we show how to exploit text data to support word discovery
from audio input in an underresourced target language. Given audio, of which a
certain amount is transcribed at the word level, and additional unrelated text
data, the approach is able to learn a probabilistic mapping from acoustic units
to characters and utilize it to segment the audio data into words without the
need of a pronunciation dictionary. This is achieved by three components: an unsupervised
acoustic unit discovery system, a supervisedly trained acoustic unit-to-grapheme
converter, and a word discovery system, which is initialized with a language model
trained on the text data. Experiments for multiple setups show that the initialization
of the language model with text data improves the word segementation performance
by a large margin.'
author:
- first_name: Thomas
full_name: Glarner, Thomas
id: '14169'
last_name: Glarner
- first_name: Benedikt
full_name: Boenninghoff, Benedikt
last_name: Boenninghoff
- first_name: Oliver
full_name: Walter, Oliver
last_name: Walter
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Glarner T, Boenninghoff B, Walter O, Haeb-Umbach R. Leveraging Text Data for
Word Segmentation for Underresourced Languages. In: INTERSPEECH 2017, Stockholm,
Schweden. ; 2017.'
apa: Glarner, T., Boenninghoff, B., Walter, O., & Haeb-Umbach, R. (2017). Leveraging
Text Data for Word Segmentation for Underresourced Languages. In INTERSPEECH
2017, Stockholm, Schweden.
bibtex: '@inproceedings{Glarner_Boenninghoff_Walter_Haeb-Umbach_2017, title={Leveraging
Text Data for Word Segmentation for Underresourced Languages}, booktitle={INTERSPEECH
2017, Stockholm, Schweden}, author={Glarner, Thomas and Boenninghoff, Benedikt
and Walter, Oliver and Haeb-Umbach, Reinhold}, year={2017} }'
chicago: Glarner, Thomas, Benedikt Boenninghoff, Oliver Walter, and Reinhold Haeb-Umbach.
“Leveraging Text Data for Word Segmentation for Underresourced Languages.” In
INTERSPEECH 2017, Stockholm, Schweden, 2017.
ieee: T. Glarner, B. Boenninghoff, O. Walter, and R. Haeb-Umbach, “Leveraging Text
Data for Word Segmentation for Underresourced Languages,” in INTERSPEECH 2017,
Stockholm, Schweden, 2017.
mla: Glarner, Thomas, et al. “Leveraging Text Data for Word Segmentation for Underresourced
Languages.” INTERSPEECH 2017, Stockholm, Schweden, 2017.
short: 'T. Glarner, B. Boenninghoff, O. Walter, R. Haeb-Umbach, in: INTERSPEECH
2017, Stockholm, Schweden, 2017.'
date_created: 2019-07-12T05:27:55Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2017/INTERSPEECH_2017_Glarner_paper.pdf
oa: '1'
publication: INTERSPEECH 2017, Stockholm, Schweden
related_material:
link:
- description: Poster
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2017/INTERSPEECH_2017_Glarner_poster.pdf
status: public
title: Leveraging Text Data for Word Segmentation for Underresourced Languages
type: conference
user_id: '44006'
year: '2017'
...