---
_id: '730'
abstract:
- lang: eng
text: "Allocating resources to virtualized network functions and services to meet
service level agreements is a challenging task for NFV management and orchestration
systems. This becomes even more challenging when agile development methodologies,
like DevOps, are applied. In such scenarios, management and orchestration systems
are continuously facing new versions of functions and services which makes it
hard to decide how much resources have to be allocated to them to provide the
expected service performance. \r\nOne solution for this problem is to support
resource allocation decisions with performance behavior information obtained by
profiling techniques applied to such network functions and services.\r\n\r\nIn
this position paper, we analyze and discuss the components needed to generate
such performance behavior information within the NFV DevOps workflow. We also
outline research questions that identify open issues and missing pieces for a
fully integrated NFV profiling solution. Further, we introduce a novel profiling
mechanism that is able to profile virtualized network functions and entire network
service chains under different resource constraints before they are deployed on
production infrastructure."
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. Understand Your Chains: Towards Performance Profile-Based
Network Service Management. In: Fifth European Workshop on Software-Defined
Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016. ; 2016:7--12.
doi:10.1109/EWSDN.2016.9'
apa: 'Peuster, M., & Karl, H. (2016). Understand Your Chains: Towards Performance
Profile-Based Network Service Management. In Fifth European Workshop on Software-Defined
Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016 (pp.
7--12). Den Haag. https://doi.org/10.1109/EWSDN.2016.9'
bibtex: '@inproceedings{Peuster_Karl_2016, title={Understand Your Chains: Towards
Performance Profile-Based Network Service Management}, DOI={10.1109/EWSDN.2016.9},
booktitle={Fifth European Workshop on Software-Defined Networks, EWSDN 2016, Den
Haag, The Netherlands, October 10-11, 2016}, author={Peuster, Manuel and Karl,
Holger}, year={2016}, pages={7--12} }'
chicago: 'Peuster, Manuel, and Holger Karl. “Understand Your Chains: Towards Performance
Profile-Based Network Service Management.” In Fifth European Workshop on Software-Defined
Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016, 7--12,
2016. https://doi.org/10.1109/EWSDN.2016.9.'
ieee: 'M. Peuster and H. Karl, “Understand Your Chains: Towards Performance Profile-Based
Network Service Management,” in Fifth European Workshop on Software-Defined
Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016, Den
Haag, 2016, pp. 7--12.'
mla: 'Peuster, Manuel, and Holger Karl. “Understand Your Chains: Towards Performance
Profile-Based Network Service Management.” Fifth European Workshop on Software-Defined
Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016, 2016,
pp. 7--12, doi:10.1109/EWSDN.2016.9.'
short: 'M. Peuster, H. Karl, in: Fifth European Workshop on Software-Defined Networks,
EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016, 2016, pp. 7--12.'
conference:
location: Den Haag
name: Fifth European Workshop on Software-Defined Networks (EWSDN
date_created: 2017-11-27T10:22:25Z
date_updated: 2022-01-06T07:03:33Z
ddc:
- '000'
department:
- _id: '75'
doi: 10.1109/EWSDN.2016.9
file:
- access_level: open_access
content_type: application/pdf
creator: peuster
date_created: 2018-06-25T13:10:10Z
date_updated: 2018-06-25T13:16:56Z
file_id: '3353'
file_name: main_ris.pdf
file_size: 966702
relation: main_file
file_date_updated: 2018-06-25T13:16:56Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- url: http://ieeexplore.ieee.org/document/7956044/
oa: '1'
page: 7--12
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: Fifth European Workshop on Software-Defined Networks, EWSDN 2016, Den
Haag, The Netherlands, October 10-11, 2016
publication_status: published
status: public
title: 'Understand Your Chains: Towards Performance Profile-Based Network Service
Management'
type: conference
urn: '7309'
user_id: '13271'
year: '2016'
...
---
_id: '732'
abstract:
- lang: eng
text: "Elastic deployments of virtualized network functions~(VNF) can automatically
scale the amount of used resources in relation to their workload. This is often
done by starting new VNF instances or stopping old ones. A problem of these scale
operations is that most network functions are stateful and their internal state
is not automatically migrated when traffic is redistributed in the deployment.
As a result, mechanisms are needed to exchange or migrate internal network function
state between VNF instances.\r\n\r\nThis paper presents a state management framework
that creates a logically distributed state store on top of elastically deployed
virtual network functions. We also introduce a novel programming model that provides
both a local and a global view of the state to each VNF instance. We discuss the
integration of our framework into existing network function virtualization architectures
and compare the performance of our prototype to a centralized and a distributed
state store solution."
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. E-State: Distributed state management in elastic network
function deployments. In: IEEE NetSoft Conference and Workshops, NetSoft 2016,
Seoul, South Korea, June 6-10, 2016. ; 2016:6--10. doi:10.1109/NETSOFT.2016.7502432'
apa: 'Peuster, M., & Karl, H. (2016). E-State: Distributed state management
in elastic network function deployments. In IEEE NetSoft Conference and Workshops,
NetSoft 2016, Seoul, South Korea, June 6-10, 2016 (pp. 6--10). Seoul. https://doi.org/10.1109/NETSOFT.2016.7502432'
bibtex: '@inproceedings{Peuster_Karl_2016, title={E-State: Distributed state management
in elastic network function deployments}, DOI={10.1109/NETSOFT.2016.7502432},
booktitle={IEEE NetSoft Conference and Workshops, NetSoft 2016, Seoul, South Korea,
June 6-10, 2016}, author={Peuster, Manuel and Karl, Holger}, year={2016}, pages={6--10}
}'
chicago: 'Peuster, Manuel, and Holger Karl. “E-State: Distributed State Management
in Elastic Network Function Deployments.” In IEEE NetSoft Conference and Workshops,
NetSoft 2016, Seoul, South Korea, June 6-10, 2016, 6--10, 2016. https://doi.org/10.1109/NETSOFT.2016.7502432.'
ieee: 'M. Peuster and H. Karl, “E-State: Distributed state management in elastic
network function deployments,” in IEEE NetSoft Conference and Workshops, NetSoft
2016, Seoul, South Korea, June 6-10, 2016, Seoul, 2016, pp. 6--10.'
mla: 'Peuster, Manuel, and Holger Karl. “E-State: Distributed State Management in
Elastic Network Function Deployments.” IEEE NetSoft Conference and Workshops,
NetSoft 2016, Seoul, South Korea, June 6-10, 2016, 2016, pp. 6--10, doi:10.1109/NETSOFT.2016.7502432.'
short: 'M. Peuster, H. Karl, in: IEEE NetSoft Conference and Workshops, NetSoft
2016, Seoul, South Korea, June 6-10, 2016, 2016, pp. 6--10.'
conference:
location: Seoul
name: IEEE NetSoft Conference and Workshops
date_created: 2017-11-27T10:22:25Z
date_updated: 2022-01-06T07:03:35Z
ddc:
- '000'
department:
- _id: '75'
doi: 10.1109/NETSOFT.2016.7502432
file:
- access_level: open_access
content_type: application/pdf
creator: peuster
date_created: 2018-06-25T13:10:43Z
date_updated: 2018-06-25T13:16:47Z
file_id: '3354'
file_name: main_ris.pdf
file_size: 696049
relation: main_file
file_date_updated: 2018-06-25T13:16:47Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
page: 6--10
publication: IEEE NetSoft Conference and Workshops, NetSoft 2016, Seoul, South Korea,
June 6-10, 2016
publication_status: published
status: public
title: 'E-State: Distributed state management in elastic network function deployments'
type: conference
urn: '7328'
user_id: '13271'
year: '2016'
...
---
_id: '738'
abstract:
- lang: eng
text: "Virtualized network services consisting of multiple individual network functions
are already today deployed across multiple sites, so called multi-PoP (points
of presence) environments. This allows to improve service performance by optimizing
its placement in the network. But prototyping and testing of these complex distributed
software systems becomes extremely challenging. The reason is that not only the
network service as such has to be tested but also its integration with management
and orchestration systems. Existing solutions, like simulators, basic network
emulators, or local cloud testbeds, do not support all aspects of these tasks.\r\n\r\nTo
this end, we introduce MeDICINE, a novel NFV prototyping platform that is able
to execute production-ready network functions, provided as software containers,
in an emulated multi-PoP environment. These network functions can be controlled
by any third-party management and orchestration system that connects to our platform
through standard interfaces. Based on this, a developer can use our platform to
prototype and test complex network services in a realistic environment running
on his laptop.\r\n"
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
- first_name: Steven
full_name: van Rossem, Steven
last_name: van Rossem
citation:
ama: 'Peuster M, Karl H, van Rossem S. MeDICINE: Rapid Prototyping of Production-Ready
Network Services in Multi-PoP Environments. In: IEEE Conference on Network
Function Virtualization and Software Defined Networks (NFV-SDN). ; 2016. doi:10.1109/NFV-SDN.2016.7919490'
apa: 'Peuster, M., Karl, H., & van Rossem, S. (2016). MeDICINE: Rapid Prototyping
of Production-Ready Network Services in Multi-PoP Environments. In IEEE Conference
on Network Function Virtualization and Software Defined Networks (NFV-SDN).
Palo Alto. https://doi.org/10.1109/NFV-SDN.2016.7919490'
bibtex: '@inproceedings{Peuster_Karl_van Rossem_2016, title={MeDICINE: Rapid Prototyping
of Production-Ready Network Services in Multi-PoP Environments}, DOI={10.1109/NFV-SDN.2016.7919490},
booktitle={IEEE Conference on Network Function Virtualization and Software Defined
Networks (NFV-SDN)}, author={Peuster, Manuel and Karl, Holger and van Rossem,
Steven}, year={2016} }'
chicago: 'Peuster, Manuel, Holger Karl, and Steven van Rossem. “MeDICINE: Rapid
Prototyping of Production-Ready Network Services in Multi-PoP Environments.” In
IEEE Conference on Network Function Virtualization and Software Defined Networks
(NFV-SDN), 2016. https://doi.org/10.1109/NFV-SDN.2016.7919490.'
ieee: 'M. Peuster, H. Karl, and S. van Rossem, “MeDICINE: Rapid Prototyping of Production-Ready
Network Services in Multi-PoP Environments,” in IEEE Conference on Network
Function Virtualization and Software Defined Networks (NFV-SDN), Palo Alto,
2016.'
mla: 'Peuster, Manuel, et al. “MeDICINE: Rapid Prototyping of Production-Ready Network
Services in Multi-PoP Environments.” IEEE Conference on Network Function Virtualization
and Software Defined Networks (NFV-SDN), 2016, doi:10.1109/NFV-SDN.2016.7919490.'
short: 'M. Peuster, H. Karl, S. van Rossem, in: IEEE Conference on Network Function
Virtualization and Software Defined Networks (NFV-SDN), 2016.'
conference:
location: Palo Alto
name: IEEE Conference on Network Function Virtualization and Software Defined Networks
(NFV-SDN)
date_created: 2017-11-27T10:22:25Z
date_updated: 2022-01-06T07:03:36Z
ddc:
- '000'
department:
- _id: '75'
doi: 10.1109/NFV-SDN.2016.7919490
file:
- access_level: open_access
content_type: application/pdf
creator: peuster
date_created: 2018-06-25T13:06:47Z
date_updated: 2018-06-25T13:17:34Z
file_id: '3349'
file_name: main_ris.pdf
file_size: 848438
relation: main_file
file_date_updated: 2018-06-25T13:17:34Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- url: https://arxiv.org/pdf/1606.05995.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: IEEE Conference on Network Function Virtualization and Software Defined
Networks (NFV-SDN)
publication_status: published
status: public
title: 'MeDICINE: Rapid Prototyping of Production-Ready Network Services in Multi-PoP
Environments'
type: conference
urn: '7384'
user_id: '13271'
year: '2016'
...
---
_id: '5595'
author:
- first_name: Gerit
full_name: Wagner, Gerit
last_name: Wagner
- first_name: Julian
full_name: Prester, Julian
last_name: Prester
- first_name: Maria
full_name: Roche, Maria
last_name: Roche
- first_name: Alexander
full_name: Benlian, Alexander
last_name: Benlian
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: 'Wagner G, Prester J, Roche M, Benlian A, Schryen G. Factors Affecting the
Scientific Impact of Literature Reviews: A Scientometric Study. In: International
Conference on Information Systems. ; 2016.'
apa: 'Wagner, G., Prester, J., Roche, M., Benlian, A., & Schryen, G. (2016).
Factors Affecting the Scientific Impact of Literature Reviews: A Scientometric
Study. In International Conference on Information Systems.'
bibtex: '@inproceedings{Wagner_Prester_Roche_Benlian_Schryen_2016, title={Factors
Affecting the Scientific Impact of Literature Reviews: A Scientometric Study},
booktitle={International Conference on Information Systems}, author={Wagner, Gerit
and Prester, Julian and Roche, Maria and Benlian, Alexander and Schryen, Guido},
year={2016} }'
chicago: 'Wagner, Gerit, Julian Prester, Maria Roche, Alexander Benlian, and Guido
Schryen. “Factors Affecting the Scientific Impact of Literature Reviews: A Scientometric
Study.” In International Conference on Information Systems, 2016.'
ieee: 'G. Wagner, J. Prester, M. Roche, A. Benlian, and G. Schryen, “Factors Affecting
the Scientific Impact of Literature Reviews: A Scientometric Study,” in International
Conference on Information Systems, 2016.'
mla: 'Wagner, Gerit, et al. “Factors Affecting the Scientific Impact of Literature
Reviews: A Scientometric Study.” International Conference on Information Systems,
2016.'
short: 'G. Wagner, J. Prester, M. Roche, A. Benlian, G. Schryen, in: International
Conference on Information Systems, 2016.'
date_created: 2018-11-14T11:34:31Z
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: 2018-12-07T11:38:41Z
date_updated: 2018-12-13T15:08:15Z
file_id: '6030'
file_name: ICIS2016 - Factors Affecting the Scientific Impact of Literature Reviews.pdf
file_size: 725409
relation: main_file
file_date_updated: 2018-12-13T15:08:15Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
publication: International Conference on Information Systems
status: public
title: 'Factors Affecting the Scientific Impact of Literature Reviews: A Scientometric
Study'
type: conference
user_id: '61579'
year: '2016'
...
---
_id: '5617'
abstract:
- lang: eng
text: CAPTCHAs are challenge-response tests that aim at preventing unwanted machines,
including bots, from accessing web services while providing easy access for humans.
Recent advances in artificial-intelligence based attacks show that the level of
security provided by many state-of-the-art text-based CAPTCHAs is declining. At
the same time, techniques for distorting and obscuring the text, which are used
to maintain the level of security, make text-based CAPTCHAs diffcult to solve
for humans, and thereby further degrade usability. The need for developing alternative
types of CAPTCHAs which improve both, the current security and usability levels,
has been emphasized by several researchers. With this study, we contribute to
research through (1) the development of two new face recognition CAPTCHAs (Farett-Gender
and Farett-Gender&Age), (2) the security analysis of both procedures, and (3)
the provision of empirical evidence that one of the suggested CAPTCHAs (Farett-Gender)
is similar to Google's reCAPTCHA and better than KCAPTCHA concerning effectiveness
(error rates), superior to both regarding learnability and satisfaction but not
effciency.
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
- first_name: Gerit
full_name: Wagner, Gerit
last_name: Wagner
- first_name: Alexander
full_name: Schlegel, Alexander
last_name: Schlegel
citation:
ama: 'Schryen G, Wagner G, Schlegel A. Development of two novel face-recognition
CAPTCHAs: a security and usability study. Computers & Security. 2016;60(July):95-116.'
apa: 'Schryen, G., Wagner, G., & Schlegel, A. (2016). Development of two novel
face-recognition CAPTCHAs: a security and usability study. Computers &
Security, 60(July), 95–116.'
bibtex: '@article{Schryen_Wagner_Schlegel_2016, title={Development of two novel
face-recognition CAPTCHAs: a security and usability study}, volume={60}, number={July},
journal={Computers & Security}, publisher={Elsevier}, author={Schryen, Guido
and Wagner, Gerit and Schlegel, Alexander}, year={2016}, pages={95–116} }'
chicago: 'Schryen, Guido, Gerit Wagner, and Alexander Schlegel. “Development of
Two Novel Face-Recognition CAPTCHAs: A Security and Usability Study.” Computers
& Security 60, no. July (2016): 95–116.'
ieee: 'G. Schryen, G. Wagner, and A. Schlegel, “Development of two novel face-recognition
CAPTCHAs: a security and usability study,” Computers & Security, vol.
60, no. July, pp. 95–116, 2016.'
mla: 'Schryen, Guido, et al. “Development of Two Novel Face-Recognition CAPTCHAs:
A Security and Usability Study.” Computers & Security, vol. 60, no.
July, Elsevier, 2016, pp. 95–116.'
short: G. Schryen, G. Wagner, A. Schlegel, Computers & Security 60 (2016) 95–116.
date_created: 2018-11-14T14:00:47Z
date_updated: 2022-01-06T07:02:10Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-07T11:38:19Z
date_updated: 2018-12-13T15:07:36Z
file_id: '6029'
file_name: cose_991_final.pdf
file_size: 2983143
relation: main_file
file_date_updated: 2018-12-13T15:07:36Z
has_accepted_license: '1'
intvolume: ' 60'
issue: July
keyword:
- CAPTCHA
- Usability
- Facial features
- Gender classiffcation
- Age classification
- Face recognition reverse Turing test
language:
- iso: eng
oa: '1'
page: 95-116
publication: Computers & Security
publisher: Elsevier
status: public
title: 'Development of two novel face-recognition CAPTCHAs: a security and usability
study'
type: journal_article
user_id: '61579'
volume: 60
year: '2016'
...
---
_id: '6739'
author:
- first_name: Dennis
full_name: Wolters, Dennis
id: '11308'
last_name: Wolters
- first_name: Christian
full_name: Gerth, Christian
last_name: Gerth
- first_name: Gregor
full_name: Engels, Gregor
id: '107'
last_name: Engels
citation:
ama: 'Wolters D, Gerth C, Engels G. Modeling Cross-Device Systems with Use Case
Diagrams. In: Proceedings of the CAiSE’18 Forum at the 28th International Conference
on Advanced Information Systems Engineering (CAiSE’16). Vol 1612. CEUR Workshop
Proceedings. CEUR-WS.org; 2016:89-96.'
apa: Wolters, D., Gerth, C., & Engels, G. (2016). Modeling Cross-Device Systems
with Use Case Diagrams. In Proceedings of the CAiSE’18 Forum at the 28th International
Conference on Advanced Information Systems Engineering (CAiSE’16) (Vol. 1612,
pp. 89–96). CEUR-WS.org.
bibtex: '@inproceedings{Wolters_Gerth_Engels_2016, series={CEUR Workshop Proceedings},
title={Modeling Cross-Device Systems with Use Case Diagrams}, volume={1612}, booktitle={Proceedings
of the CAiSE’18 Forum at the 28th International Conference on Advanced Information
Systems Engineering (CAiSE’16)}, publisher={CEUR-WS.org}, author={Wolters, Dennis
and Gerth, Christian and Engels, Gregor}, year={2016}, pages={89–96}, collection={CEUR
Workshop Proceedings} }'
chicago: Wolters, Dennis, Christian Gerth, and Gregor Engels. “Modeling Cross-Device
Systems with Use Case Diagrams.” In Proceedings of the CAiSE’18 Forum at the
28th International Conference on Advanced Information Systems Engineering (CAiSE’16),
1612:89–96. CEUR Workshop Proceedings. CEUR-WS.org, 2016.
ieee: D. Wolters, C. Gerth, and G. Engels, “Modeling Cross-Device Systems with Use
Case Diagrams,” in Proceedings of the CAiSE’18 Forum at the 28th International
Conference on Advanced Information Systems Engineering (CAiSE’16), 2016, vol.
1612, pp. 89–96.
mla: Wolters, Dennis, et al. “Modeling Cross-Device Systems with Use Case Diagrams.”
Proceedings of the CAiSE’18 Forum at the 28th International Conference on Advanced
Information Systems Engineering (CAiSE’16), vol. 1612, CEUR-WS.org, 2016,
pp. 89–96.
short: 'D. Wolters, C. Gerth, G. Engels, in: Proceedings of the CAiSE’18 Forum at
the 28th International Conference on Advanced Information Systems Engineering
(CAiSE’16), CEUR-WS.org, 2016, pp. 89–96.'
date_created: 2019-01-15T14:46:18Z
date_updated: 2022-01-06T07:03:17Z
department:
- _id: '66'
intvolume: ' 1612'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://ceur-ws.org/Vol-1612/paper12.pdf
oa: '1'
page: 89-96
publication: Proceedings of the CAiSE'18 Forum at the 28th International Conference
on Advanced Information Systems Engineering (CAiSE'16)
publisher: CEUR-WS.org
series_title: CEUR Workshop Proceedings
status: public
title: Modeling Cross-Device Systems with Use Case Diagrams
type: conference
user_id: '11308'
volume: 1612
year: '2016'
...
---
_id: '166'
abstract:
- lang: eng
text: Network function virtualization and software-defined networking allow services
consisting of virtual network functions to be designed and implemented with great
flexibility by facilitating automatic deployments, migrations, and reconfigurations
for services and their components. For extended flexibility, we go beyond seeing
services as a fixed chain of functions. We present a YANG model for describing
the service structure in deployment requests in a flexible way that enables changing
the order of functions in case the order of traversing them does not affect the
functionality of the service. Upon receiving such requests, the network orchestration
system can choose the optimal composition of service components that gives the
best results for placement of services in the network. This introduces new complexities
to the placement problem by greatly increasing the number of possible ways a service
can be composed. In this paper, we describe a heuristic solution that selects
a Pareto set of the possible compositions of a service as well as possible combinations
of different services, with respect to different resource requirements of the
services. Our evaluations show that the selected combinations consist of representative
samples of possible structures and requirements and therefore, can result in optimal
or close-to-optimal placement results.
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
citation:
ama: 'Dräxler S, Karl H. Placement of Services with Flexible Structures Specified
by a YANG Data Model. In: Proceedings of the 2nd International IEEE Conference
on Network Softwarization (NetSoft). ; 2016:184--192. doi:10.1109/NETSOFT.2016.7502412'
apa: Dräxler, S., & Karl, H. (2016). Placement of Services with Flexible Structures
Specified by a YANG Data Model. In Proceedings of the 2nd International IEEE
Conference on Network Softwarization (NetSoft) (pp. 184--192). https://doi.org/10.1109/NETSOFT.2016.7502412
bibtex: '@inproceedings{Dräxler_Karl_2016, title={Placement of Services with Flexible
Structures Specified by a YANG Data Model}, DOI={10.1109/NETSOFT.2016.7502412},
booktitle={Proceedings of the 2nd International IEEE Conference on Network Softwarization
(NetSoft)}, author={Dräxler, Sevil and Karl, Holger}, year={2016}, pages={184--192}
}'
chicago: Dräxler, Sevil, and Holger Karl. “Placement of Services with Flexible Structures
Specified by a YANG Data Model.” In Proceedings of the 2nd International IEEE
Conference on Network Softwarization (NetSoft), 184--192, 2016. https://doi.org/10.1109/NETSOFT.2016.7502412.
ieee: S. Dräxler and H. Karl, “Placement of Services with Flexible Structures Specified
by a YANG Data Model,” in Proceedings of the 2nd International IEEE Conference
on Network Softwarization (NetSoft), 2016, pp. 184--192.
mla: Dräxler, Sevil, and Holger Karl. “Placement of Services with Flexible Structures
Specified by a YANG Data Model.” Proceedings of the 2nd International IEEE
Conference on Network Softwarization (NetSoft), 2016, pp. 184--192, doi:10.1109/NETSOFT.2016.7502412.
short: 'S. Dräxler, H. Karl, in: Proceedings of the 2nd International IEEE Conference
on Network Softwarization (NetSoft), 2016, pp. 184--192.'
date_created: 2017-10-17T12:41:24Z
date_updated: 2022-01-06T06:52:53Z
ddc:
- '040'
department:
- _id: '75'
doi: 10.1109/NETSOFT.2016.7502412
file:
- access_level: open_access
content_type: application/pdf
creator: sevilmeh
date_created: 2018-06-25T07:53:54Z
date_updated: 2018-06-25T07:53:54Z
file_id: '3322'
file_name: RIS.pdf
file_size: 1471937
relation: main_file
file_date_updated: 2018-06-25T07:53:54Z
has_accepted_license: '1'
main_file_link:
- url: http://ieeexplore.ieee.org/search/searchresult.jsp?newsearch=true&queryText=10.1109%2FNETSOFT.2016.7502412
oa: '1'
page: 184--192
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 2nd International IEEE Conference on Network Softwarization
(NetSoft)
status: public
title: Placement of Services with Flexible Structures Specified by a YANG Data Model
type: conference
urn: '1665'
user_id: '31764'
year: '2016'
...
---
_id: '11738'
abstract:
- lang: eng
text: 'In this contribution we investigate a priori signal-to-noise ratio (SNR)
estimation, a crucial component of a single-channel speech enhancement system
based on spectral subtraction. The majority of the state-of-the art a priori SNR
estimators work in the power spectral domain, which is, however, not confirmed
to be the optimal domain for the estimation. Motivated by the generalized spectral
subtraction rule, we show how the estimation of the a priori SNR can be formulated
in the so called generalized SNR domain. This formulation allows to generalize
the widely used decision directed (DD) approach. An experimental investigation
with different noise types reveals the superiority of the generalized DD approach
over the conventional DD approach in terms of both the mean opinion score - listening
quality objective measure and the output global SNR in the medium to high input
SNR regime, while we show that the power spectrum is the optimal domain for low
SNR. We further develop a parameterization which adjusts the domain of estimation
automatically according to the estimated input global SNR. Index Terms: single-channel
speech enhancement, a priori SNR estimation, generalized spectral subtraction'
author:
- first_name: Aleksej
full_name: Chinaev, Aleksej
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 Priori SNR Estimation Using a Generalized Decision
Directed Approach. In: INTERSPEECH 2016, San Francisco, USA. ; 2016.'
apa: Chinaev, A., & Haeb-Umbach, R. (2016). A Priori SNR Estimation Using a
Generalized Decision Directed Approach. In INTERSPEECH 2016, San Francisco,
USA.
bibtex: '@inproceedings{Chinaev_Haeb-Umbach_2016, title={A Priori SNR Estimation
Using a Generalized Decision Directed Approach}, booktitle={INTERSPEECH 2016,
San Francisco, USA}, author={Chinaev, Aleksej and Haeb-Umbach, Reinhold}, year={2016}
}'
chicago: Chinaev, Aleksej, and Reinhold Haeb-Umbach. “A Priori SNR Estimation Using
a Generalized Decision Directed Approach.” In INTERSPEECH 2016, San Francisco,
USA, 2016.
ieee: A. Chinaev and R. Haeb-Umbach, “A Priori SNR Estimation Using a Generalized
Decision Directed Approach,” in INTERSPEECH 2016, San Francisco, USA, 2016.
mla: Chinaev, Aleksej, and Reinhold Haeb-Umbach. “A Priori SNR Estimation Using
a Generalized Decision Directed Approach.” INTERSPEECH 2016, San Francisco,
USA, 2016.
short: 'A. Chinaev, R. Haeb-Umbach, in: INTERSPEECH 2016, San Francisco, USA, 2016.'
date_created: 2019-07-12T05:27:18Z
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/2016/ChHa16.pdf
oa: '1'
publication: INTERSPEECH 2016, San Francisco, USA
related_material:
link:
- description: Poster
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2016/ChHa16_Poster.pdf
status: public
title: A Priori SNR Estimation Using a Generalized Decision Directed Approach
type: conference
user_id: '44006'
year: '2016'
...
---
_id: '11743'
abstract:
- lang: eng
text: This contribution introduces a novel causal a priori signal-to-noise ratio
(SNR) estimator for single-channel speech enhancement. To exploit the advantages
of the generalized spectral subtraction, a normalized ?-order magnitude (NAOM)
domain is introduced where an a priori SNR estimation is carried out. In this
domain, the NAOM coefficients of noise and clean speech signals are modeled by
a Weibull distribution and aWeibullmixturemodel (WMM), respectively. While the
parameters of the noise model are calculated from the noise power spectral density
estimates, the speechWMM parameters are estimated from the noisy signal by applying
a causal Expectation-Maximization algorithm. Further a maximum a posteriori estimate
of the a priori SNR is developed. The experiments in different noisy environments
show the superiority of the proposed estimator compared to the well-known decision-directed
approach in terms of estimation error, estimator variance and speech quality of
the enhanced signals when used for speech enhancement.
author:
- first_name: Aleksej
full_name: Chinaev, Aleksej
last_name: Chinaev
- first_name: Jens
full_name: Heitkaemper, Jens
id: '27643'
last_name: Heitkaemper
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Chinaev A, Heitkaemper J, Haeb-Umbach R. A Priori SNR Estimation Using Weibull
Mixture Model. In: 12. ITG Fachtagung Sprachkommunikation (ITG 2016). ;
2016.'
apa: Chinaev, A., Heitkaemper, J., & Haeb-Umbach, R. (2016). A Priori SNR Estimation
Using Weibull Mixture Model. In 12. ITG Fachtagung Sprachkommunikation (ITG
2016).
bibtex: '@inproceedings{Chinaev_Heitkaemper_Haeb-Umbach_2016, title={A Priori SNR
Estimation Using Weibull Mixture Model}, booktitle={12. ITG Fachtagung Sprachkommunikation
(ITG 2016)}, author={Chinaev, Aleksej and Heitkaemper, Jens and Haeb-Umbach, Reinhold},
year={2016} }'
chicago: Chinaev, Aleksej, Jens Heitkaemper, and Reinhold Haeb-Umbach. “A Priori
SNR Estimation Using Weibull Mixture Model.” In 12. ITG Fachtagung Sprachkommunikation
(ITG 2016), 2016.
ieee: A. Chinaev, J. Heitkaemper, and R. Haeb-Umbach, “A Priori SNR Estimation Using
Weibull Mixture Model,” in 12. ITG Fachtagung Sprachkommunikation (ITG 2016),
2016.
mla: Chinaev, Aleksej, et al. “A Priori SNR Estimation Using Weibull Mixture Model.”
12. ITG Fachtagung Sprachkommunikation (ITG 2016), 2016.
short: 'A. Chinaev, J. Heitkaemper, R. Haeb-Umbach, in: 12. ITG Fachtagung Sprachkommunikation
(ITG 2016), 2016.'
date_created: 2019-07-12T05:27:24Z
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/2016/ChHeiHa16.pdf
oa: '1'
publication: 12. ITG Fachtagung Sprachkommunikation (ITG 2016)
related_material:
link:
- description: Presentation
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2016/ChHeiHa16_Presentation.pdf
status: public
title: A Priori SNR Estimation Using Weibull Mixture Model
type: conference
user_id: '44006'
year: '2016'
...
---
_id: '11744'
abstract:
- lang: eng
text: A noise power spectral density (PSD) estimation is an indispensable component
of speech spectral enhancement systems. In this paper we present a noise PSD tracking
algorithm, which employs a noise presence probability estimate delivered by a
deep neural network (DNN). The algorithm provides a causal noise PSD estimate
and can thus be used in speech enhancement systems for communication purposes.
An extensive performance comparison has been carried out with ten causal state-of-the-art
noise tracking algorithms taken from the literature and categorized acc. to applied
techniques. The experiments showed that the proposed DNN-based noise PSD tracker
outperforms all competing methods with respect to all tested performance measures,
which include the noise tracking performance and the performance of a speech enhancement
system employing the noise tracking component.
author:
- first_name: Aleksej
full_name: Chinaev, Aleksej
last_name: Chinaev
- first_name: Jahn
full_name: Heymann, Jahn
id: '9168'
last_name: Heymann
- 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: 'Chinaev A, Heymann J, Drude L, Haeb-Umbach R. Noise-Presence-Probability-Based
Noise PSD Estimation by Using DNNs. In: 12. ITG Fachtagung Sprachkommunikation
(ITG 2016). ; 2016.'
apa: Chinaev, A., Heymann, J., Drude, L., & Haeb-Umbach, R. (2016). Noise-Presence-Probability-Based
Noise PSD Estimation by Using DNNs. In 12. ITG Fachtagung Sprachkommunikation
(ITG 2016).
bibtex: '@inproceedings{Chinaev_Heymann_Drude_Haeb-Umbach_2016, title={Noise-Presence-Probability-Based
Noise PSD Estimation by Using DNNs}, booktitle={12. ITG Fachtagung Sprachkommunikation
(ITG 2016)}, author={Chinaev, Aleksej and Heymann, Jahn and Drude, Lukas and Haeb-Umbach,
Reinhold}, year={2016} }'
chicago: Chinaev, Aleksej, Jahn Heymann, Lukas Drude, and Reinhold Haeb-Umbach.
“Noise-Presence-Probability-Based Noise PSD Estimation by Using DNNs.” In 12.
ITG Fachtagung Sprachkommunikation (ITG 2016), 2016.
ieee: A. Chinaev, J. Heymann, L. Drude, and R. Haeb-Umbach, “Noise-Presence-Probability-Based
Noise PSD Estimation by Using DNNs,” in 12. ITG Fachtagung Sprachkommunikation
(ITG 2016), 2016.
mla: Chinaev, Aleksej, et al. “Noise-Presence-Probability-Based Noise PSD Estimation
by Using DNNs.” 12. ITG Fachtagung Sprachkommunikation (ITG 2016), 2016.
short: 'A. Chinaev, J. Heymann, L. Drude, R. Haeb-Umbach, in: 12. ITG Fachtagung
Sprachkommunikation (ITG 2016), 2016.'
date_created: 2019-07-12T05:27:25Z
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/2016/ChHeyDrHa16.pdf
oa: '1'
publication: 12. ITG Fachtagung Sprachkommunikation (ITG 2016)
related_material:
link:
- description: Presentation
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2016/ChHeyDrHa16_Presentation.pdf
status: public
title: Noise-Presence-Probability-Based Noise PSD Estimation by Using DNNs
type: conference
user_id: '44006'
year: '2016'
...
---
_id: '11751'
author:
- first_name: Lukas
full_name: Drude, Lukas
id: '11213'
last_name: Drude
- first_name: Christoph
full_name: Boeddeker, Christoph
id: '40767'
last_name: Boeddeker
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Drude L, Boeddeker C, Haeb-Umbach R. Blind Speech Separation based on Complex
Spherical k-Mode Clustering. In: Proc. IEEE Intl. Conf. on Acoustics, Speech
and Signal Processing (ICASSP). ; 2016.'
apa: Drude, L., Boeddeker, C., & Haeb-Umbach, R. (2016). Blind Speech Separation
based on Complex Spherical k-Mode Clustering. In Proc. IEEE Intl. Conf. on
Acoustics, Speech and Signal Processing (ICASSP).
bibtex: '@inproceedings{Drude_Boeddeker_Haeb-Umbach_2016, title={Blind Speech Separation
based on Complex Spherical k-Mode Clustering}, booktitle={Proc. IEEE Intl. Conf.
on Acoustics, Speech and Signal Processing (ICASSP)}, author={Drude, Lukas and
Boeddeker, Christoph and Haeb-Umbach, Reinhold}, year={2016} }'
chicago: Drude, Lukas, Christoph Boeddeker, and Reinhold Haeb-Umbach. “Blind Speech
Separation Based on Complex Spherical K-Mode Clustering.” In Proc. IEEE Intl.
Conf. on Acoustics, Speech and Signal Processing (ICASSP), 2016.
ieee: L. Drude, C. Boeddeker, and R. Haeb-Umbach, “Blind Speech Separation based
on Complex Spherical k-Mode Clustering,” in Proc. IEEE Intl. Conf. on Acoustics,
Speech and Signal Processing (ICASSP), 2016.
mla: Drude, Lukas, et al. “Blind Speech Separation Based on Complex Spherical K-Mode
Clustering.” Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing
(ICASSP), 2016.
short: 'L. Drude, C. Boeddeker, R. Haeb-Umbach, in: Proc. IEEE Intl. Conf. on Acoustics,
Speech and Signal Processing (ICASSP), 2016.'
date_created: 2019-07-12T05:27:33Z
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/2016/icassp_2016_drude_paper.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/2016/icassp_2016_drude_slides.pdf
status: public
title: Blind Speech Separation based on Complex Spherical k-Mode Clustering
type: conference
user_id: '44006'
year: '2016'
...
---
_id: '11756'
abstract:
- lang: eng
text: Although complex-valued neural networks (CVNNs) â?? networks which can operate
with complex arithmetic â?? have been around for a while, they have not been given
reconsideration since the breakthrough of deep network architectures. This paper
presents a critical assessment whether the novel tool set of deep neural networks
(DNNs) should be extended to complex-valued arithmetic. Indeed, with DNNs making
inroads in speech enhancement tasks, the use of complex-valued input data, specifically
the short-time Fourier transform coefficients, is an obvious consideration. In
particular when it comes to performing tasks that heavily rely on phase information,
such as acoustic beamforming, complex-valued algorithms are omnipresent. In this
contribution we recapitulate backpropagation in CVNNs, develop complex-valued
network elements, such as the split-rectified non-linearity, and compare real-
and complex-valued networks on a beamforming task. We find that CVNNs hardly provide
a performance gain and conclude that the effort of developing the complex-valued
counterparts of the building blocks of modern deep or recurrent neural networks
can hardly be justified.
author:
- first_name: Lukas
full_name: Drude, Lukas
id: '11213'
last_name: Drude
- first_name: Bhiksha
full_name: Raj, Bhiksha
last_name: Raj
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Drude L, Raj B, Haeb-Umbach R. On the appropriateness of complex-valued neural
networks for speech enhancement. In: INTERSPEECH 2016, San Francisco, USA.
; 2016.'
apa: Drude, L., Raj, B., & Haeb-Umbach, R. (2016). On the appropriateness of
complex-valued neural networks for speech enhancement. In INTERSPEECH 2016,
San Francisco, USA.
bibtex: '@inproceedings{Drude_Raj_Haeb-Umbach_2016, title={On the appropriateness
of complex-valued neural networks for speech enhancement}, booktitle={INTERSPEECH
2016, San Francisco, USA}, author={Drude, Lukas and Raj, Bhiksha and Haeb-Umbach,
Reinhold}, year={2016} }'
chicago: Drude, Lukas, Bhiksha Raj, and Reinhold Haeb-Umbach. “On the Appropriateness
of Complex-Valued Neural Networks for Speech Enhancement.” In INTERSPEECH 2016,
San Francisco, USA, 2016.
ieee: L. Drude, B. Raj, and R. Haeb-Umbach, “On the appropriateness of complex-valued
neural networks for speech enhancement,” in INTERSPEECH 2016, San Francisco,
USA, 2016.
mla: Drude, Lukas, et al. “On the Appropriateness of Complex-Valued Neural Networks
for Speech Enhancement.” INTERSPEECH 2016, San Francisco, USA, 2016.
short: 'L. Drude, B. Raj, R. Haeb-Umbach, in: INTERSPEECH 2016, San Francisco, USA,
2016.'
date_created: 2019-07-12T05:27:39Z
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/2016/interspeech_2016_drude_paper.pdf
oa: '1'
publication: INTERSPEECH 2016, San Francisco, USA
related_material:
link:
- description: Poster
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2016/interspeech_2016_drude_slides.pdf
status: public
title: On the appropriateness of complex-valued neural networks for speech enhancement
type: conference
user_id: '44006'
year: '2016'
...
---
_id: '11771'
abstract:
- lang: eng
text: This paper is concerned with speech presence probability estimation employing
an explicit model of the temporal and spectral correlations of speech. An undirected
graphical model is introduced, based on a Factor Graph formulation. It is shown
that this undirected model cures some of the theoretical issues of an earlier
directed graphical model. Furthermore, we formulate a message passing inference
scheme based on an approximate graph factorization, identify this inference scheme
as a particular message passing schedule based on the turbo principle and suggest
further alternative schedules. The experiments show an improved performance over
speech presence probability estimation based on an IID assumption, and a slightly
better performance of the turbo schedule over the alternatives.
author:
- first_name: Thomas
full_name: Glarner, Thomas
id: '14169'
last_name: Glarner
- first_name: Mohammad
full_name: Mahdi Momenzadeh, Mohammad
last_name: Mahdi Momenzadeh
- 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: 'Glarner T, Mahdi Momenzadeh M, Drude L, Haeb-Umbach R. Factor Graph Decoding
for Speech Presence Probability Estimation. In: 12. ITG Fachtagung Sprachkommunikation
(ITG 2016). ; 2016.'
apa: Glarner, T., Mahdi Momenzadeh, M., Drude, L., & Haeb-Umbach, R. (2016).
Factor Graph Decoding for Speech Presence Probability Estimation. In 12. ITG
Fachtagung Sprachkommunikation (ITG 2016).
bibtex: '@inproceedings{Glarner_Mahdi Momenzadeh_Drude_Haeb-Umbach_2016, title={Factor
Graph Decoding for Speech Presence Probability Estimation}, booktitle={12. ITG
Fachtagung Sprachkommunikation (ITG 2016)}, author={Glarner, Thomas and Mahdi
Momenzadeh, Mohammad and Drude, Lukas and Haeb-Umbach, Reinhold}, year={2016}
}'
chicago: Glarner, Thomas, Mohammad Mahdi Momenzadeh, Lukas Drude, and Reinhold Haeb-Umbach.
“Factor Graph Decoding for Speech Presence Probability Estimation.” In 12.
ITG Fachtagung Sprachkommunikation (ITG 2016), 2016.
ieee: T. Glarner, M. Mahdi Momenzadeh, L. Drude, and R. Haeb-Umbach, “Factor Graph
Decoding for Speech Presence Probability Estimation,” in 12. ITG Fachtagung
Sprachkommunikation (ITG 2016), 2016.
mla: Glarner, Thomas, et al. “Factor Graph Decoding for Speech Presence Probability
Estimation.” 12. ITG Fachtagung Sprachkommunikation (ITG 2016), 2016.
short: 'T. Glarner, M. Mahdi Momenzadeh, L. Drude, R. Haeb-Umbach, in: 12. ITG Fachtagung
Sprachkommunikation (ITG 2016), 2016.'
date_created: 2019-07-12T05:27:56Z
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/2016/itgspeech2016_08_Glarner.pdf
oa: '1'
publication: 12. ITG Fachtagung Sprachkommunikation (ITG 2016)
related_material:
link:
- description: Slides
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2016/itgspeech2016_08_Glarner_slides.pdf
status: public
title: Factor Graph Decoding for Speech Presence Probability Estimation
type: conference
user_id: '44006'
year: '2016'
...
---
_id: '11812'
author:
- first_name: Jahn
full_name: Heymann, Jahn
id: '9168'
last_name: Heymann
- 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: 'Heymann J, Drude L, Haeb-Umbach R. Neural Network Based Spectral Mask Estimation
for Acoustic Beamforming. In: Proc. IEEE Intl. Conf. on Acoustics, Speech and
Signal Processing (ICASSP). ; 2016.'
apa: Heymann, J., Drude, L., & Haeb-Umbach, R. (2016). Neural Network Based
Spectral Mask Estimation for Acoustic Beamforming. In Proc. IEEE Intl. Conf.
on Acoustics, Speech and Signal Processing (ICASSP).
bibtex: '@inproceedings{Heymann_Drude_Haeb-Umbach_2016, title={Neural Network Based
Spectral Mask Estimation for Acoustic Beamforming}, booktitle={Proc. IEEE Intl.
Conf. on Acoustics, Speech and Signal Processing (ICASSP)}, author={Heymann, Jahn
and Drude, Lukas and Haeb-Umbach, Reinhold}, year={2016} }'
chicago: Heymann, Jahn, Lukas Drude, and Reinhold Haeb-Umbach. “Neural Network Based
Spectral Mask Estimation for Acoustic Beamforming.” In Proc. IEEE Intl. Conf.
on Acoustics, Speech and Signal Processing (ICASSP), 2016.
ieee: J. Heymann, L. Drude, and R. Haeb-Umbach, “Neural Network Based Spectral Mask
Estimation for Acoustic Beamforming,” in Proc. IEEE Intl. Conf. on Acoustics,
Speech and Signal Processing (ICASSP), 2016.
mla: Heymann, Jahn, et al. “Neural Network Based Spectral Mask Estimation for Acoustic
Beamforming.” Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing
(ICASSP), 2016.
short: 'J. Heymann, L. Drude, R. Haeb-Umbach, in: Proc. IEEE Intl. Conf. on Acoustics,
Speech and Signal Processing (ICASSP), 2016.'
date_created: 2019-07-12T05:28:44Z
date_updated: 2022-01-06T06:51:09Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2016/icassp_2016_heymann_paper.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/2016/icassp_2016_heymann_slides.pdf
status: public
title: Neural Network Based Spectral Mask Estimation for Acoustic Beamforming
type: conference
user_id: '44006'
year: '2016'
...
---
_id: '11829'
abstract:
- lang: eng
text: 'This contribution investigates Direction of Arrival (DoA) estimation using
linearly arranged microphone arrays. We are going to develop a model for the DoA
estimation error in a reverberant scenario and show the existence of a bias, that
is a consequence of the linear arrangement and limited field of view (FoV) bias:
First, the limited FoV leading to a clipping of the measurements, and, second,
the angular distribution of the signal energy of the reflections being non-uniform.
Since both issues are a consequence of the linear arrangement of the sensors,
the bias arises largely independent of the kind of DoA estimator. The experimental
evaluation demonstrates the existence of the bias for a selected number of DoA
estimation methods and proves that the prediction from the developed theoretical
model matches the simulation results.'
author:
- first_name: Florian
full_name: Jacob, Florian
last_name: Jacob
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Jacob F, Haeb-Umbach R. On the Bias of Direction of Arrival Estimation Using
Linear Microphone Arrays. In: 12. ITG Fachtagung Sprachkommunikation (ITG 2016).
; 2016.'
apa: Jacob, F., & Haeb-Umbach, R. (2016). On the Bias of Direction of Arrival
Estimation Using Linear Microphone Arrays. In 12. ITG Fachtagung Sprachkommunikation
(ITG 2016).
bibtex: '@inproceedings{Jacob_Haeb-Umbach_2016, title={On the Bias of Direction
of Arrival Estimation Using Linear Microphone Arrays}, booktitle={12. ITG Fachtagung
Sprachkommunikation (ITG 2016)}, author={Jacob, Florian and Haeb-Umbach, Reinhold},
year={2016} }'
chicago: Jacob, Florian, and Reinhold Haeb-Umbach. “On the Bias of Direction of
Arrival Estimation Using Linear Microphone Arrays.” In 12. ITG Fachtagung Sprachkommunikation
(ITG 2016), 2016.
ieee: F. Jacob and R. Haeb-Umbach, “On the Bias of Direction of Arrival Estimation
Using Linear Microphone Arrays,” in 12. ITG Fachtagung Sprachkommunikation
(ITG 2016), 2016.
mla: Jacob, Florian, and Reinhold Haeb-Umbach. “On the Bias of Direction of Arrival
Estimation Using Linear Microphone Arrays.” 12. ITG Fachtagung Sprachkommunikation
(ITG 2016), 2016.
short: 'F. Jacob, R. Haeb-Umbach, in: 12. ITG Fachtagung Sprachkommunikation (ITG
2016), 2016.'
date_created: 2019-07-12T05:29:03Z
date_updated: 2022-01-06T06:51:10Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2016/JacobHaeb_ITG2016.pdf
oa: '1'
publication: 12. ITG Fachtagung Sprachkommunikation (ITG 2016)
related_material:
link:
- description: Poster
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2016/JacobHaeb_ITG2016_poster.pdf
status: public
title: On the Bias of Direction of Arrival Estimation Using Linear Microphone Arrays
type: conference
user_id: '44006'
year: '2016'
...
---
_id: '11834'
abstract:
- lang: eng
text: We present a system for the 4th CHiME challenge which significantly increases
the performance for all three tracks with respect to the provided baseline system.
The front-end uses a bi-directional Long Short-Term Memory (BLSTM)-based neural
network to estimate signal statistics. These then steer a Generalized Eigenvalue
beamformer. The back-end consists of a 22 layer deep Wide Residual Network and
two extra BLSTM layers. Working on a whole utterance instead of frames allows
us to refine Batch-Normalization. We also train our own BLSTM-based language model.
Adding a discriminative speaker adaptation leads to further gains. The final system
achieves a word error rate on the six channel real test data of 3.48%. For the
two channel track we achieve 5.96% and for the one channel track 9.34%. This is
the best reported performance on the challenge achieved by a single system, i.e.,
a configuration, which does not combine multiple systems. At the same time, our
system is independent of the microphone configuration. We can thus use the same
components for all three tracks.
author:
- first_name: Jahn
full_name: Heymann, Jahn
id: '9168'
last_name: Heymann
- 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: 'Heymann J, Drude L, Haeb-Umbach R. Wide Residual BLSTM Network with Discriminative
Speaker Adaptation for Robust Speech Recognition. In: Computer Speech and Language.
; 2016.'
apa: Heymann, J., Drude, L., & Haeb-Umbach, R. (2016). Wide Residual BLSTM Network
with Discriminative Speaker Adaptation for Robust Speech Recognition. In Computer
Speech and Language.
bibtex: '@inproceedings{Heymann_Drude_Haeb-Umbach_2016, title={Wide Residual BLSTM
Network with Discriminative Speaker Adaptation for Robust Speech Recognition},
booktitle={Computer Speech and Language}, author={Heymann, Jahn and Drude, Lukas
and Haeb-Umbach, Reinhold}, year={2016} }'
chicago: Heymann, Jahn, Lukas Drude, and Reinhold Haeb-Umbach. “Wide Residual BLSTM
Network with Discriminative Speaker Adaptation for Robust Speech Recognition.”
In Computer Speech and Language, 2016.
ieee: J. Heymann, L. Drude, and R. Haeb-Umbach, “Wide Residual BLSTM Network with
Discriminative Speaker Adaptation for Robust Speech Recognition,” in Computer
Speech and Language, 2016.
mla: Heymann, Jahn, et al. “Wide Residual BLSTM Network with Discriminative Speaker
Adaptation for Robust Speech Recognition.” Computer Speech and Language,
2016.
short: 'J. Heymann, L. Drude, R. Haeb-Umbach, in: Computer Speech and Language,
2016.'
date_created: 2019-07-12T05:29:09Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2016/chime4_upbonly_paper.pdf
oa: '1'
publication: Computer Speech and Language
related_material:
link:
- description: Poster
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2016/chime4_upbonly_poster.pdf
status: public
title: Wide Residual BLSTM Network with Discriminative Speaker Adaptation for Robust
Speech Recognition
type: conference
user_id: '44006'
year: '2016'
...
---
_id: '11840'
author:
- first_name: Keisuke
full_name: Kinoshita, Keisuke
last_name: Kinoshita
- first_name: Marc
full_name: Delcroix, Marc
last_name: Delcroix
- first_name: Sharon
full_name: Gannot, Sharon
last_name: Gannot
- first_name: Emanuel A. P.
full_name: Habets, Emanuel A. P.
last_name: Habets
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
- first_name: Walter
full_name: Kellermann, Walter
last_name: Kellermann
- first_name: Volker
full_name: Leutnant, Volker
last_name: Leutnant
- first_name: Roland
full_name: Maas, Roland
last_name: Maas
- first_name: Tomohiro
full_name: Nakatani, Tomohiro
last_name: Nakatani
- first_name: Bhiksha
full_name: Raj, Bhiksha
last_name: Raj
- first_name: Armin
full_name: Sehr, Armin
last_name: Sehr
- first_name: Takuya
full_name: Yoshioka, Takuya
last_name: Yoshioka
citation:
ama: 'Kinoshita K, Delcroix M, Gannot S, et al. A summary of the REVERB challenge:
state-of-the-art and remaining challenges in reverberant speech processing research.
EURASIP Journal on Advances in Signal Processing. 2016.'
apa: 'Kinoshita, K., Delcroix, M., Gannot, S., Habets, E. A. P., Haeb-Umbach, R.,
Kellermann, W., … Yoshioka, T. (2016). A summary of the REVERB challenge: state-of-the-art
and remaining challenges in reverberant speech processing research. EURASIP
Journal on Advances in Signal Processing.'
bibtex: '@article{Kinoshita_Delcroix_Gannot_Habets_Haeb-Umbach_Kellermann_Leutnant_Maas_Nakatani_Raj_et
al._2016, title={A summary of the REVERB challenge: state-of-the-art and remaining
challenges in reverberant speech processing research}, journal={EURASIP Journal
on Advances in Signal Processing}, author={Kinoshita, Keisuke and Delcroix, Marc
and Gannot, Sharon and Habets, Emanuel A. P. and Haeb-Umbach, Reinhold and Kellermann,
Walter and Leutnant, Volker and Maas, Roland and Nakatani, Tomohiro and Raj, Bhiksha
and et al.}, year={2016} }'
chicago: 'Kinoshita, Keisuke, Marc Delcroix, Sharon Gannot, Emanuel A. P. Habets,
Reinhold Haeb-Umbach, Walter Kellermann, Volker Leutnant, et al. “A Summary of
the REVERB Challenge: State-of-the-Art and Remaining Challenges in Reverberant
Speech Processing Research.” EURASIP Journal on Advances in Signal Processing,
2016.'
ieee: 'K. Kinoshita et al., “A summary of the REVERB challenge: state-of-the-art
and remaining challenges in reverberant speech processing research,” EURASIP
Journal on Advances in Signal Processing, 2016.'
mla: 'Kinoshita, Keisuke, et al. “A Summary of the REVERB Challenge: State-of-the-Art
and Remaining Challenges in Reverberant Speech Processing Research.” EURASIP
Journal on Advances in Signal Processing, 2016.'
short: K. Kinoshita, M. Delcroix, S. Gannot, E.A.P. Habets, R. Haeb-Umbach, W. Kellermann,
V. Leutnant, R. Maas, T. Nakatani, B. Raj, A. Sehr, T. Yoshioka, EURASIP Journal
on Advances in Signal Processing (2016).
date_created: 2019-07-12T05:29:16Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2016/REVERB_summary.pdf
oa: '1'
publication: EURASIP Journal on Advances in Signal Processing
status: public
title: 'A summary of the REVERB challenge: state-of-the-art and remaining challenges
in reverberant speech processing research'
type: journal_article
user_id: '44006'
year: '2016'
...
---
_id: '11908'
abstract:
- lang: eng
text: 'This paper describes automatic speech recognition (ASR) systems developed
jointly by RWTH, UPB and FORTH for the 1ch, 2ch and 6ch track of the 4th CHiME
Challenge. In the 2ch and 6ch tracks the final system output is obtained by a
Confusion Network Combination (CNC) of multiple systems. The Acoustic Model (AM)
is a deep neural network based on Bidirectional Long Short-Term Memory (BLSTM)
units. The systems differ by front ends and training sets used for the acoustic
training. The model for the 1ch track is trained without any preprocessing. For
each front end we trained and evaluated individual acoustic models. We compare
the ASR performance of different beamforming approaches: a conventional superdirective
beamformer [1] and an MVDR beamformer as in [2], where the steering vector is
estimated based on [3]. Furthermore we evaluated a BLSTM supported Generalized
Eigenvalue beamformer using NN-GEV [4]. The back end is implemented using RWTH?s
open-source toolkits RASR [5], RETURNN [6] and rwthlm [7]. We rescore lattices
with a Long Short-Term Memory (LSTM) based language model. The overall best results
are obtained by a system combination that includes the lattices from the system
of UPB?s submission [8]. Our final submission scored second in each of the three
tracks of the 4th CHiME Challenge.'
author:
- first_name: Tobias
full_name: Menne, Tobias
last_name: Menne
- first_name: Jahn
full_name: Heymann, Jahn
id: '9168'
last_name: Heymann
- first_name: Anastasios
full_name: Alexandridis, Anastasios
last_name: Alexandridis
- first_name: Kazuki
full_name: Irie, Kazuki
last_name: Irie
- first_name: Albert
full_name: Zeyer, Albert
last_name: Zeyer
- first_name: Markus
full_name: Kitza, Markus
last_name: Kitza
- first_name: Pavel
full_name: Golik, Pavel
last_name: Golik
- first_name: Ilia
full_name: Kulikov, Ilia
last_name: Kulikov
- first_name: Lukas
full_name: Drude, Lukas
id: '11213'
last_name: Drude
- first_name: Ralf
full_name: Schlüter, Ralf
last_name: Schlüter
- first_name: Hermann
full_name: Ney, Hermann
last_name: Ney
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
- first_name: Athanasios
full_name: Mouchtaris, Athanasios
last_name: Mouchtaris
citation:
ama: 'Menne T, Heymann J, Alexandridis A, et al. The RWTH/UPB/FORTH System Combination
for the 4th CHiME Challenge Evaluation. In: Computer Speech and Language.
; 2016.'
apa: Menne, T., Heymann, J., Alexandridis, A., Irie, K., Zeyer, A., Kitza, M., …
Mouchtaris, A. (2016). The RWTH/UPB/FORTH System Combination for the 4th CHiME
Challenge Evaluation. In Computer Speech and Language.
bibtex: '@inproceedings{Menne_Heymann_Alexandridis_Irie_Zeyer_Kitza_Golik_Kulikov_Drude_Schlüter_et
al._2016, title={The RWTH/UPB/FORTH System Combination for the 4th CHiME Challenge
Evaluation}, booktitle={Computer Speech and Language}, author={Menne, Tobias and
Heymann, Jahn and Alexandridis, Anastasios and Irie, Kazuki and Zeyer, Albert
and Kitza, Markus and Golik, Pavel and Kulikov, Ilia and Drude, Lukas and Schlüter,
Ralf and et al.}, year={2016} }'
chicago: Menne, Tobias, Jahn Heymann, Anastasios Alexandridis, Kazuki Irie, Albert
Zeyer, Markus Kitza, Pavel Golik, et al. “The RWTH/UPB/FORTH System Combination
for the 4th CHiME Challenge Evaluation.” In Computer Speech and Language,
2016.
ieee: T. Menne et al., “The RWTH/UPB/FORTH System Combination for the 4th
CHiME Challenge Evaluation,” in Computer Speech and Language, 2016.
mla: Menne, Tobias, et al. “The RWTH/UPB/FORTH System Combination for the 4th CHiME
Challenge Evaluation.” Computer Speech and Language, 2016.
short: 'T. Menne, J. Heymann, A. Alexandridis, K. Irie, A. Zeyer, M. Kitza, P. Golik,
I. Kulikov, L. Drude, R. Schlüter, H. Ney, R. Haeb-Umbach, A. Mouchtaris, in:
Computer Speech and Language, 2016.'
date_created: 2019-07-12T05:30:35Z
date_updated: 2022-01-06T06:51:12Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2016/chime4_rwthupbforth_paper.pdf
oa: '1'
publication: Computer Speech and Language
status: public
title: The RWTH/UPB/FORTH System Combination for the 4th CHiME Challenge Evaluation
type: conference
user_id: '44006'
year: '2016'
...
---
_id: '11920'
abstract:
- lang: eng
text: In this paper we demonstrate an algorithm to learn words from speech using
non-parametric Bayesian hierarchical models in an unsupervised setting. We exploit
the assumption of a hierarchical structure of speech, namely the formation of
spoken words as a sequence of phonemes. We employ the Nested Hierarchical Pitman-Yor
Language Model, which allows an a priori unknown and possibly unlimited number
of words. We assume the n-gram probabilities of words, the m-gram probabilities
of phoneme sequences in words and the phoneme sequences of the words themselves
as latent variables to be learned. We evaluate the algorithm on a cross language
task using an existing speech recognizer trained on English speech to decode speech
in the Xitsonga language supplied for the 2015 ZeroSpeech challenge. We apply
the learning algorithm on the resulting phoneme graphs and achieve the highest
token precision and F score compared to present systems.
author:
- 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: 'Walter O, Haeb-Umbach R. Unsupervised Word Discovery from Speech using Bayesian
Hierarchical Models. In: 38th German Conference on Pattern Recognition (GCPR
2016). ; 2016.'
apa: Walter, O., & Haeb-Umbach, R. (2016). Unsupervised Word Discovery from
Speech using Bayesian Hierarchical Models. In 38th German Conference on Pattern
Recognition (GCPR 2016).
bibtex: '@inproceedings{Walter_Haeb-Umbach_2016, title={Unsupervised Word Discovery
from Speech using Bayesian Hierarchical Models}, booktitle={38th German Conference
on Pattern Recognition (GCPR 2016)}, author={Walter, Oliver and Haeb-Umbach, Reinhold},
year={2016} }'
chicago: Walter, Oliver, and Reinhold Haeb-Umbach. “Unsupervised Word Discovery
from Speech Using Bayesian Hierarchical Models.” In 38th German Conference
on Pattern Recognition (GCPR 2016), 2016.
ieee: O. Walter and R. Haeb-Umbach, “Unsupervised Word Discovery from Speech using
Bayesian Hierarchical Models,” in 38th German Conference on Pattern Recognition
(GCPR 2016), 2016.
mla: Walter, Oliver, and Reinhold Haeb-Umbach. “Unsupervised Word Discovery from
Speech Using Bayesian Hierarchical Models.” 38th German Conference on Pattern
Recognition (GCPR 2016), 2016.
short: 'O. Walter, R. Haeb-Umbach, in: 38th German Conference on Pattern Recognition
(GCPR 2016), 2016.'
date_created: 2019-07-12T05:30:49Z
date_updated: 2022-01-06T06:51:12Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2016/WaHa16.pdf
oa: '1'
publication: 38th German Conference on Pattern Recognition (GCPR 2016)
related_material:
link:
- description: Presentation
relation: supplementary_material
url: https://groups.uni-paderborn.de/nt/pubs/2016/WaHa16_Talk.pdf
status: public
title: Unsupervised Word Discovery from Speech using Bayesian Hierarchical Models
type: conference
user_id: '44006'
year: '2016'
...
---
_id: '12935'
author:
- first_name: Anna Maria
full_name: Komprecht, Anna Maria
last_name: Komprecht
- first_name: Daniel
full_name: Röwenstrunk, Daniel
id: '439'
last_name: Röwenstrunk
orcid: https://orcid.org/0000-0001-6271-2095
citation:
ama: 'Komprecht AM, Röwenstrunk D. Projektmanagement in digitalen Forschungsprojekten.
In: „Ei, Dem Alten Herrn Zoll’ Ich Achtung Gern“. Allitera Verlag, München;
2016. doi:10.25366/2018.33'
apa: Komprecht, A. M., & Röwenstrunk, D. (2016). Projektmanagement in digitalen
Forschungsprojekten. In „Ei, dem alten Herrn zoll’ ich Achtung gern“. Allitera
Verlag, München. https://doi.org/10.25366/2018.33
bibtex: '@inbook{Komprecht_Röwenstrunk_2016, title={Projektmanagement in digitalen
Forschungsprojekten}, DOI={10.25366/2018.33},
booktitle={„Ei, dem alten Herrn zoll’ ich Achtung gern“}, publisher={Allitera
Verlag, München}, author={Komprecht, Anna Maria and Röwenstrunk, Daniel}, year={2016}
}'
chicago: Komprecht, Anna Maria, and Daniel Röwenstrunk. “Projektmanagement in Digitalen
Forschungsprojekten.” In „Ei, Dem Alten Herrn Zoll’ Ich Achtung Gern“.
Allitera Verlag, München, 2016. https://doi.org/10.25366/2018.33.
ieee: A. M. Komprecht and D. Röwenstrunk, “Projektmanagement in digitalen Forschungsprojekten,”
in „Ei, dem alten Herrn zoll’ ich Achtung gern“, Allitera Verlag, München,
2016.
mla: Komprecht, Anna Maria, and Daniel Röwenstrunk. “Projektmanagement in Digitalen
Forschungsprojekten.” „Ei, Dem Alten Herrn Zoll’ Ich Achtung Gern“, Allitera
Verlag, München, 2016, doi:10.25366/2018.33.
short: 'A.M. Komprecht, D. Röwenstrunk, in: „Ei, Dem Alten Herrn Zoll’ Ich Achtung
Gern“, Allitera Verlag, München, 2016.'
date_created: 2019-08-16T12:54:22Z
date_updated: 2022-01-06T06:51:27Z
ddc:
- '650'
- '000'
department:
- _id: '233'
- _id: '43'
doi: 10.25366/2018.33
file:
- access_level: open_access
content_type: application/pdf
creator: danruebe
date_created: 2019-08-16T12:56:16Z
date_updated: 2019-08-16T13:05:57Z
file_id: '12936'
file_name: 2016_Röwenstrunk_Projektmanagement.pdf
file_size: 253199
relation: main_file
title: Projektmanagement in digitalen Forschungsprojekten.
file_date_updated: 2019-08-16T13:05:57Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
publication: „Ei, dem alten Herrn zoll’ ich Achtung gern“
publisher: Allitera Verlag, München
status: public
title: Projektmanagement in digitalen Forschungsprojekten
type: book_chapter
user_id: '439'
year: '2016'
...