---
_id: '19960'
abstract:
- lang: eng
text: Besides the life-as-it-could-be driver of artificial life research there is
also the concept of extending natural life by creating hybrids or mixed societies
that are built from natural and artificial components. In this paper we motivate
and present the research program of the project flora robotica. Our objective
is to develop and to investigate closely linked symbiotic relationships between
robots and natural plants and to explore the potentials of a plant-robot society
able to produce architectural artifacts and living spaces. These robot-plant bio-hybrids
create synergies that allow for new functions of plants and robots. They also
create novel design opportunities for an architecture that fuses the design and
construction phase. The bio-hybrid is an example of mixed societies between 'hard'
artificial and 'wet' natural life, which enables an interaction between natural
and artificial ecologies. They form an embodied, self-organizing, and distributed
cognitive system which is supposed to grow and develop over long periods of time
resulting in the creation of meaningful architectural structures. A key idea is
to assign equal roles to robots and plants in order to create a highly integrated,
symbiotic system. Besides the gain of knowledge, this project has the objective
to create a bio-hybrid system with a defined function and application -- growing
architectural artifacts.
author:
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
- first_name: Mostafa
full_name: Wahby, Mostafa
last_name: Wahby
- first_name: Thomas
full_name: Schmickl, Thomas
last_name: Schmickl
- first_name: Payam
full_name: Zahadat, Payam
last_name: Zahadat
- first_name: Daniel
full_name: Hofstadler, Daniel
last_name: Hofstadler
- first_name: Kasper
full_name: Stoy, Kasper
last_name: Stoy
- first_name: Sebastian
full_name: Risi, Sebastian
last_name: Risi
- first_name: Andres
full_name: Faina, Andres
last_name: Faina
- first_name: Frank
full_name: Veenstra, Frank
last_name: Veenstra
- first_name: Serge
full_name: Kernbach, Serge
last_name: Kernbach
- first_name: Igor
full_name: Kuksin, Igor
last_name: Kuksin
- first_name: Olga
full_name: Kernbach, Olga
last_name: Kernbach
- first_name: Phil
full_name: Ayres, Phil
last_name: Ayres
- first_name: Przemyslaw
full_name: Wojtaszek, Przemyslaw
last_name: Wojtaszek
citation:
ama: 'Hamann H, Wahby M, Schmickl T, et al. Flora Robotica - Mixed Societies of
Symbiotic Robot-Plant Bio-Hybrids. In: Proceedings of the 2015 IEEE Symposium
on Artificial Life (IEEE ALIFE’15). ; 2015. doi:10.1109/ssci.2015.158'
apa: Hamann, H., Wahby, M., Schmickl, T., Zahadat, P., Hofstadler, D., Stoy, K.,
… Wojtaszek, P. (2015). Flora Robotica - Mixed Societies of Symbiotic Robot-Plant
Bio-Hybrids. In Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE
ALIFE’15). https://doi.org/10.1109/ssci.2015.158
bibtex: '@inproceedings{Hamann_Wahby_Schmickl_Zahadat_Hofstadler_Stoy_Risi_Faina_Veenstra_Kernbach_et
al._2015, title={Flora Robotica - Mixed Societies of Symbiotic Robot-Plant Bio-Hybrids},
DOI={10.1109/ssci.2015.158},
booktitle={Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE ALIFE’15)},
author={Hamann, Heiko and Wahby, Mostafa and Schmickl, Thomas and Zahadat, Payam
and Hofstadler, Daniel and Stoy, Kasper and Risi, Sebastian and Faina, Andres
and Veenstra, Frank and Kernbach, Serge and et al.}, year={2015} }'
chicago: Hamann, Heiko, Mostafa Wahby, Thomas Schmickl, Payam Zahadat, Daniel Hofstadler,
Kasper Stoy, Sebastian Risi, et al. “Flora Robotica - Mixed Societies of Symbiotic
Robot-Plant Bio-Hybrids.” In Proceedings of the 2015 IEEE Symposium on Artificial
Life (IEEE ALIFE’15), 2015. https://doi.org/10.1109/ssci.2015.158.
ieee: H. Hamann et al., “Flora Robotica - Mixed Societies of Symbiotic Robot-Plant
Bio-Hybrids,” in Proceedings of the 2015 IEEE Symposium on Artificial Life
(IEEE ALIFE’15), 2015.
mla: Hamann, Heiko, et al. “Flora Robotica - Mixed Societies of Symbiotic Robot-Plant
Bio-Hybrids.” Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE
ALIFE’15), 2015, doi:10.1109/ssci.2015.158.
short: 'H. Hamann, M. Wahby, T. Schmickl, P. Zahadat, D. Hofstadler, K. Stoy, S.
Risi, A. Faina, F. Veenstra, S. Kernbach, I. Kuksin, O. Kernbach, P. Ayres, P.
Wojtaszek, in: Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE
ALIFE’15), 2015.'
date_created: 2020-10-08T12:44:10Z
date_updated: 2022-01-06T06:54:17Z
department:
- _id: '63'
- _id: '238'
doi: 10.1109/ssci.2015.158
language:
- iso: eng
publication: Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE ALIFE'15)
publication_identifier:
isbn:
- '9781479975600'
publication_status: published
status: public
title: Flora Robotica - Mixed Societies of Symbiotic Robot-Plant Bio-Hybrids
type: conference
user_id: '15415'
year: '2015'
...
---
_id: '19962'
abstract:
- lang: eng
text: Recent approaches in evolutionary robotics (ER) propose to generate behavioral
diversity in order to evolve desired behaviors more easily. These approaches require
the definition of a behavioral distance, which often includes task-specific features
and hence a priori knowledge. Alternative methods, which do not explicitly force
selective pressure towards diversity (SPTD) but still generate it, are known from
the field of artificial life, such as in artificial ecologies (AEs). In this study,
we investigate how SPTD is generated without task-specific behavioral features
or other forms of a priori knowledge and detect how methods of generating SPTD
can be transferred from the domain of AE to ER. A promising finding is that in
both types of systems, in systems from ER that generate behavioral diversity and
also in the investigated speciation model, selective pressure is generated towards
unpopulated regions of search space. In a simple case study we investigate the
practical implications of these findings and point to options for transferring
the idea of self-organizing SPTD in AEs to the domain of ER.
author:
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
citation:
ama: 'Hamann H. Lessons from Speciation Dynamics: How to Generate Selective Pressure
Towards Diversity. Artificial Life. 2015:464-480. doi:10.1162/artl_a_00186'
apa: 'Hamann, H. (2015). Lessons from Speciation Dynamics: How to Generate Selective
Pressure Towards Diversity. Artificial Life, 464–480. https://doi.org/10.1162/artl_a_00186'
bibtex: '@article{Hamann_2015, title={Lessons from Speciation Dynamics: How to Generate
Selective Pressure Towards Diversity}, DOI={10.1162/artl_a_00186},
journal={Artificial Life}, author={Hamann, Heiko}, year={2015}, pages={464–480}
}'
chicago: 'Hamann, Heiko. “Lessons from Speciation Dynamics: How to Generate Selective
Pressure Towards Diversity.” Artificial Life, 2015, 464–80. https://doi.org/10.1162/artl_a_00186.'
ieee: 'H. Hamann, “Lessons from Speciation Dynamics: How to Generate Selective Pressure
Towards Diversity,” Artificial Life, pp. 464–480, 2015.'
mla: 'Hamann, Heiko. “Lessons from Speciation Dynamics: How to Generate Selective
Pressure Towards Diversity.” Artificial Life, 2015, pp. 464–80, doi:10.1162/artl_a_00186.'
short: H. Hamann, Artificial Life (2015) 464–480.
date_created: 2020-10-08T14:36:25Z
date_updated: 2022-01-06T06:54:17Z
department:
- _id: '63'
- _id: '238'
doi: 10.1162/artl_a_00186
language:
- iso: eng
page: 464-480
publication: Artificial Life
publication_identifier:
issn:
- 1064-5462
- 1530-9185
publication_status: published
status: public
title: 'Lessons from Speciation Dynamics: How to Generate Selective Pressure Towards
Diversity'
type: journal_article
user_id: '15415'
year: '2015'
...
---
_id: '19966'
abstract:
- lang: eng
text: Aggregation is a crucial task in swarm robotics to ensure cooperation. We
investigate the task of aggregation on an area specified indirectly by certain
environmental features, here it is a light distribution. We extend the original
BEECLUST algorithm, that implements an aggregation behavior, to an adaptive variant
that automatically adapts to any light conditions. We compare these two control
algorithms in a number of swarm robot experiments with different light conditions.
The improved, adaptive variant is found to be significantly better in the tested
setup.
author:
- first_name: Mostafa
full_name: Wahby, Mostafa
last_name: Wahby
- first_name: Alexander
full_name: Weinhold, Alexander
last_name: Weinhold
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
citation:
ama: 'Wahby M, Weinhold A, Hamann H. Revisiting BEECLUST: Aggregation of Swarm Robots
with Adaptiveness to Different Light Settings. In: Proceedings of the 9th EAI
International Conference on Bio-Inspired Information and Communications Technologies
(Formerly BIONETICS). ; 2015. doi:10.4108/eai.3-12-2015.2262877'
apa: 'Wahby, M., Weinhold, A., & Hamann, H. (2015). Revisiting BEECLUST: Aggregation
of Swarm Robots with Adaptiveness to Different Light Settings. In Proceedings
of the 9th EAI International Conference on Bio-inspired Information and Communications
Technologies (formerly BIONETICS). https://doi.org/10.4108/eai.3-12-2015.2262877'
bibtex: '@inproceedings{Wahby_Weinhold_Hamann_2015, title={Revisiting BEECLUST:
Aggregation of Swarm Robots with Adaptiveness to Different Light Settings}, DOI={10.4108/eai.3-12-2015.2262877},
booktitle={Proceedings of the 9th EAI International Conference on Bio-inspired
Information and Communications Technologies (formerly BIONETICS)}, author={Wahby,
Mostafa and Weinhold, Alexander and Hamann, Heiko}, year={2015} }'
chicago: 'Wahby, Mostafa, Alexander Weinhold, and Heiko Hamann. “Revisiting BEECLUST:
Aggregation of Swarm Robots with Adaptiveness to Different Light Settings.” In
Proceedings of the 9th EAI International Conference on Bio-Inspired Information
and Communications Technologies (Formerly BIONETICS), 2015. https://doi.org/10.4108/eai.3-12-2015.2262877.'
ieee: 'M. Wahby, A. Weinhold, and H. Hamann, “Revisiting BEECLUST: Aggregation of
Swarm Robots with Adaptiveness to Different Light Settings,” in Proceedings
of the 9th EAI International Conference on Bio-inspired Information and Communications
Technologies (formerly BIONETICS), 2015.'
mla: 'Wahby, Mostafa, et al. “Revisiting BEECLUST: Aggregation of Swarm Robots with
Adaptiveness to Different Light Settings.” Proceedings of the 9th EAI International
Conference on Bio-Inspired Information and Communications Technologies (Formerly
BIONETICS), 2015, doi:10.4108/eai.3-12-2015.2262877.'
short: 'M. Wahby, A. Weinhold, H. Hamann, in: Proceedings of the 9th EAI International
Conference on Bio-Inspired Information and Communications Technologies (Formerly
BIONETICS), 2015.'
date_created: 2020-10-09T13:41:56Z
date_updated: 2022-01-06T06:54:17Z
department:
- _id: '63'
- _id: '238'
doi: 10.4108/eai.3-12-2015.2262877
language:
- iso: eng
publication: Proceedings of the 9th EAI International Conference on Bio-inspired Information
and Communications Technologies (formerly BIONETICS)
publication_identifier:
isbn:
- '9781631901003'
publication_status: published
status: public
title: 'Revisiting BEECLUST: Aggregation of Swarm Robots with Adaptiveness to Different
Light Settings'
type: conference
user_id: '15415'
year: '2015'
...
---
_id: '19967'
author:
- first_name: Mostafa
full_name: Wahby, Mostafa
last_name: Wahby
- first_name: Mohammad
full_name: Divband Soorati, Mohammad
last_name: Divband Soorati
- first_name: Sebastian
full_name: von Mammen, Sebastian
last_name: von Mammen
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
citation:
ama: 'Wahby M, Divband Soorati M, von Mammen S, Hamann H. Evolution of Controllers
for Robot-Plant Bio-Hybdrids: A Simple Case Study Using a Model of Plant Growth
and Motion. In: Proceedings. 25. Computational Intelligence Workshop. ;
2015.'
apa: 'Wahby, M., Divband Soorati, M., von Mammen, S., & Hamann, H. (2015). Evolution
of Controllers for Robot-Plant Bio-Hybdrids: A Simple Case Study Using a Model
of Plant Growth and Motion. In Proceedings. 25. Computational Intelligence
Workshop.'
bibtex: '@inproceedings{Wahby_Divband Soorati_von Mammen_Hamann_2015, title={Evolution
of Controllers for Robot-Plant Bio-Hybdrids: A Simple Case Study Using a Model
of Plant Growth and Motion}, booktitle={Proceedings. 25. Computational Intelligence
Workshop}, author={Wahby, Mostafa and Divband Soorati, Mohammad and von Mammen,
Sebastian and Hamann, Heiko}, year={2015} }'
chicago: 'Wahby, Mostafa, Mohammad Divband Soorati, Sebastian von Mammen, and Heiko
Hamann. “Evolution of Controllers for Robot-Plant Bio-Hybdrids: A Simple Case
Study Using a Model of Plant Growth and Motion.” In Proceedings. 25. Computational
Intelligence Workshop, 2015.'
ieee: 'M. Wahby, M. Divband Soorati, S. von Mammen, and H. Hamann, “Evolution of
Controllers for Robot-Plant Bio-Hybdrids: A Simple Case Study Using a Model of
Plant Growth and Motion,” in Proceedings. 25. Computational Intelligence Workshop,
2015.'
mla: 'Wahby, Mostafa, et al. “Evolution of Controllers for Robot-Plant Bio-Hybdrids:
A Simple Case Study Using a Model of Plant Growth and Motion.” Proceedings.
25. Computational Intelligence Workshop, 2015.'
short: 'M. Wahby, M. Divband Soorati, S. von Mammen, H. Hamann, in: Proceedings.
25. Computational Intelligence Workshop, 2015.'
date_created: 2020-10-09T13:50:38Z
date_updated: 2022-01-06T06:54:17Z
department:
- _id: '63'
- _id: '238'
language:
- iso: eng
publication: Proceedings. 25. Computational Intelligence Workshop
status: public
title: 'Evolution of Controllers for Robot-Plant Bio-Hybdrids: A Simple Case Study
Using a Model of Plant Growth and Motion'
type: conference
user_id: '15415'
year: '2015'
...
---
_id: '19980'
abstract:
- lang: eng
text: Fitness function design is known to be a critical feature of the evolutionary-robotics
approach. Potentially, the complexity of evolving a successful controller for
a given task can be reduced by integrating a priori knowledge into the fitness
function which complicates the comparability of studies in evolutionary robotics.
Still, there are only few publications that study the actual effects of different
fitness functions on the robot's performance. In this paper, we follow the fitness
function classification of Nelson et al. (2009) and investigate a selection of
four classes of fitness functions that require different degrees of a priori knowledge.
The robot controllers are evolved in simulation using NEAT and we investigate
different tasks including obstacle avoidance and (periodic) goal homing. The best
evolved controllers were then post-evaluated by examining their potential for
adaptation, determining their convergence rates, and using cross-comparisons based
on the different fitness function classes. The results confirm that the integration
of more a priori knowledge can simplify a task and show that more attention should
be paid to fitness function classes when comparing different studies.
author:
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
- first_name: Mohammad
full_name: Divband Soorati, Mohammad
last_name: Divband Soorati
citation:
ama: 'Hamann H, Divband Soorati M. The Effect of Fitness Function Design on Performance
in Evolutionary Robotics: The Influence of a Priori Knowledge. In: Proceedings
of the Genetic and Evolutionary Computation Conference (GECCO 2015). ACM;
2015:153-160. doi:10.1145/2739480.2754676'
apa: 'Hamann, H., & Divband Soorati, M. (2015). The Effect of Fitness Function
Design on Performance in Evolutionary Robotics: The Influence of a Priori Knowledge.
In Proceedings of the Genetic and Evolutionary Computation Conference (GECCO
2015) (pp. 153–160). ACM. https://doi.org/10.1145/2739480.2754676'
bibtex: '@inproceedings{Hamann_Divband Soorati_2015, title={The Effect of Fitness
Function Design on Performance in Evolutionary Robotics: The Influence of a Priori
Knowledge}, DOI={10.1145/2739480.2754676},
booktitle={Proceedings of the Genetic and Evolutionary Computation Conference
(GECCO 2015)}, publisher={ACM}, author={Hamann, Heiko and Divband Soorati, Mohammad},
year={2015}, pages={153–160} }'
chicago: 'Hamann, Heiko, and Mohammad Divband Soorati. “The Effect of Fitness Function
Design on Performance in Evolutionary Robotics: The Influence of a Priori Knowledge.”
In Proceedings of the Genetic and Evolutionary Computation Conference (GECCO
2015), 153–60. ACM, 2015. https://doi.org/10.1145/2739480.2754676.'
ieee: 'H. Hamann and M. Divband Soorati, “The Effect of Fitness Function Design
on Performance in Evolutionary Robotics: The Influence of a Priori Knowledge,”
in Proceedings of the Genetic and Evolutionary Computation Conference (GECCO
2015), 2015, pp. 153–160.'
mla: 'Hamann, Heiko, and Mohammad Divband Soorati. “The Effect of Fitness Function
Design on Performance in Evolutionary Robotics: The Influence of a Priori Knowledge.”
Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2015),
ACM, 2015, pp. 153–60, doi:10.1145/2739480.2754676.'
short: 'H. Hamann, M. Divband Soorati, in: Proceedings of the Genetic and Evolutionary
Computation Conference (GECCO 2015), ACM, 2015, pp. 153–160.'
date_created: 2020-10-12T13:12:25Z
date_updated: 2022-01-06T06:54:17Z
department:
- _id: '63'
- _id: '238'
doi: 10.1145/2739480.2754676
language:
- iso: eng
page: 153-160
publication: Proceedings of the Genetic and Evolutionary Computation Conference (GECCO
2015)
publisher: ACM
status: public
title: 'The Effect of Fitness Function Design on Performance in Evolutionary Robotics:
The Influence of a Priori Knowledge'
type: conference
user_id: '15415'
year: '2015'
...
---
_id: '19988'
author:
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
- first_name: Thomas
full_name: Schmickl, Thomas
last_name: Schmickl
- first_name: Payam
full_name: Zahadat, Payam
last_name: Zahadat
citation:
ama: 'Hamann H, Schmickl T, Zahadat P. Evolving Collective Behaviors With Diverse
But Predictable Sensor States. In: 13th European Conference on Artificial Life
(ECAL 2015). MIT Press; 2015:174. doi:10.7551/978-0-262-33027-5-ch036'
apa: Hamann, H., Schmickl, T., & Zahadat, P. (2015). Evolving Collective Behaviors
With Diverse But Predictable Sensor States. In 13th European Conference on
Artificial Life (ECAL 2015) (p. 174). MIT Press. https://doi.org/10.7551/978-0-262-33027-5-ch036
bibtex: '@inproceedings{Hamann_Schmickl_Zahadat_2015, title={Evolving Collective
Behaviors With Diverse But Predictable Sensor States}, DOI={10.7551/978-0-262-33027-5-ch036},
booktitle={13th European Conference on Artificial Life (ECAL 2015)}, publisher={MIT
Press}, author={Hamann, Heiko and Schmickl, Thomas and Zahadat, Payam}, year={2015},
pages={174} }'
chicago: Hamann, Heiko, Thomas Schmickl, and Payam Zahadat. “Evolving Collective
Behaviors With Diverse But Predictable Sensor States.” In 13th European Conference
on Artificial Life (ECAL 2015), 174. MIT Press, 2015. https://doi.org/10.7551/978-0-262-33027-5-ch036.
ieee: H. Hamann, T. Schmickl, and P. Zahadat, “Evolving Collective Behaviors With
Diverse But Predictable Sensor States,” in 13th European Conference on Artificial
Life (ECAL 2015), 2015, p. 174.
mla: Hamann, Heiko, et al. “Evolving Collective Behaviors With Diverse But Predictable
Sensor States.” 13th European Conference on Artificial Life (ECAL 2015),
MIT Press, 2015, p. 174, doi:10.7551/978-0-262-33027-5-ch036.
short: 'H. Hamann, T. Schmickl, P. Zahadat, in: 13th European Conference on Artificial
Life (ECAL 2015), MIT Press, 2015, p. 174.'
date_created: 2020-10-13T08:50:38Z
date_updated: 2022-01-06T06:54:17Z
department:
- _id: '63'
- _id: '238'
doi: 10.7551/978-0-262-33027-5-ch036
language:
- iso: eng
page: '174'
publication: 13th European Conference on Artificial Life (ECAL 2015)
publisher: MIT Press
status: public
title: Evolving Collective Behaviors With Diverse But Predictable Sensor States
type: conference
user_id: '15415'
year: '2015'
...
---
_id: '19989'
author:
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
- first_name: Nikolaus
full_name: Correll, Nikolaus
last_name: Correll
- first_name: Janusz
full_name: Kacprzyk, Janusz
last_name: Kacprzyk
- first_name: Witold
full_name: Pedrycz, Witold
last_name: Pedrycz
citation:
ama: 'Hamann H, Correll N, Kacprzyk J, Pedrycz W. Probabilistic Modeling of Swarming
Systems. In: Springer Handbook of Computational Intelligence. Springer;
2015:1423-1431. doi:10.1007/978-3-662-43505-2_74'
apa: Hamann, H., Correll, N., Kacprzyk, J., & Pedrycz, W. (2015). Probabilistic
Modeling of Swarming Systems. In Springer Handbook of Computational Intelligence
(pp. 1423–1431). Springer. https://doi.org/10.1007/978-3-662-43505-2_74
bibtex: '@inbook{Hamann_Correll_Kacprzyk_Pedrycz_2015, title={Probabilistic Modeling
of Swarming Systems}, DOI={10.1007/978-3-662-43505-2_74},
booktitle={Springer Handbook of Computational Intelligence}, publisher={Springer},
author={Hamann, Heiko and Correll, Nikolaus and Kacprzyk, Janusz and Pedrycz,
Witold}, year={2015}, pages={1423–1431} }'
chicago: Hamann, Heiko, Nikolaus Correll, Janusz Kacprzyk, and Witold Pedrycz. “Probabilistic
Modeling of Swarming Systems.” In Springer Handbook of Computational Intelligence,
1423–31. Springer, 2015. https://doi.org/10.1007/978-3-662-43505-2_74.
ieee: H. Hamann, N. Correll, J. Kacprzyk, and W. Pedrycz, “Probabilistic Modeling
of Swarming Systems,” in Springer Handbook of Computational Intelligence,
Springer, 2015, pp. 1423–1431.
mla: Hamann, Heiko, et al. “Probabilistic Modeling of Swarming Systems.” Springer
Handbook of Computational Intelligence, Springer, 2015, pp. 1423–31, doi:10.1007/978-3-662-43505-2_74.
short: 'H. Hamann, N. Correll, J. Kacprzyk, W. Pedrycz, in: Springer Handbook of
Computational Intelligence, Springer, 2015, pp. 1423–1431.'
date_created: 2020-10-13T09:04:19Z
date_updated: 2022-01-06T06:54:17Z
department:
- _id: '63'
- _id: '238'
doi: 10.1007/978-3-662-43505-2_74
language:
- iso: eng
page: 1423-1431
publication: Springer Handbook of Computational Intelligence
publisher: Springer
status: public
title: Probabilistic Modeling of Swarming Systems
type: book_chapter
user_id: '15415'
year: '2015'
...
---
_id: '19990'
author:
- first_name: Hongli
full_name: Ding, Hongli
last_name: Ding
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
citation:
ama: 'Ding H, Hamann H. Dependability in Swarm Robotics: Error Detection and Correction.
In: First International Symposium on Swarm Behavior and Bio-Inspired Robotics
(SWARM 2015). ; 2015.'
apa: 'Ding, H., & Hamann, H. (2015). Dependability in Swarm Robotics: Error
Detection and Correction. In First International Symposium on Swarm Behavior
and Bio-Inspired Robotics (SWARM 2015).'
bibtex: '@inproceedings{Ding_Hamann_2015, title={Dependability in Swarm Robotics:
Error Detection and Correction}, booktitle={First International Symposium on Swarm
Behavior and Bio-Inspired Robotics (SWARM 2015)}, author={Ding, Hongli and Hamann,
Heiko}, year={2015} }'
chicago: 'Ding, Hongli, and Heiko Hamann. “Dependability in Swarm Robotics: Error
Detection and Correction.” In First International Symposium on Swarm Behavior
and Bio-Inspired Robotics (SWARM 2015), 2015.'
ieee: 'H. Ding and H. Hamann, “Dependability in Swarm Robotics: Error Detection
and Correction,” in First International Symposium on Swarm Behavior and Bio-Inspired
Robotics (SWARM 2015), 2015.'
mla: 'Ding, Hongli, and Heiko Hamann. “Dependability in Swarm Robotics: Error Detection
and Correction.” First International Symposium on Swarm Behavior and Bio-Inspired
Robotics (SWARM 2015), 2015.'
short: 'H. Ding, H. Hamann, in: First International Symposium on Swarm Behavior
and Bio-Inspired Robotics (SWARM 2015), 2015.'
date_created: 2020-10-13T09:09:20Z
date_updated: 2022-01-06T06:54:17Z
department:
- _id: '63'
- _id: '238'
language:
- iso: eng
publication: First International Symposium on Swarm Behavior and Bio-Inspired Robotics
(SWARM 2015)
status: public
title: 'Dependability in Swarm Robotics: Error Detection and Correction'
type: conference
user_id: '15415'
year: '2015'
...
---
_id: '19991'
author:
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
- first_name: Thomas
full_name: Schmickl, Thomas
last_name: Schmickl
- first_name: Daniela
full_name: Kengyel, Daniela
last_name: Kengyel
- first_name: Payam
full_name: Zahadat, Payam
last_name: Zahadat
- first_name: Gerald
full_name: Radspieler, Gerald
last_name: Radspieler
- first_name: Franz
full_name: Wotawa, Franz
last_name: Wotawa
citation:
ama: 'Hamann H, Schmickl T, Kengyel D, Zahadat P, Radspieler G, Wotawa F. Potential
of Heterogeneity in Collective Behaviors: A Case Study on Heterogeneous Swarms.
In: Principles and Practice of Multi-Agent Systems (PRIMA 2015). ; 2015:201-217.'
apa: 'Hamann, H., Schmickl, T., Kengyel, D., Zahadat, P., Radspieler, G., &
Wotawa, F. (2015). Potential of Heterogeneity in Collective Behaviors: A Case
Study on Heterogeneous Swarms. In Principles and Practice of Multi-Agent Systems
(PRIMA 2015) (pp. 201–217).'
bibtex: '@inproceedings{Hamann_Schmickl_Kengyel_Zahadat_Radspieler_Wotawa_2015,
title={Potential of Heterogeneity in Collective Behaviors: A Case Study on Heterogeneous
Swarms}, booktitle={Principles and Practice of Multi-Agent Systems (PRIMA 2015)},
author={Hamann, Heiko and Schmickl, Thomas and Kengyel, Daniela and Zahadat, Payam
and Radspieler, Gerald and Wotawa, Franz}, year={2015}, pages={201–217} }'
chicago: 'Hamann, Heiko, Thomas Schmickl, Daniela Kengyel, Payam Zahadat, Gerald
Radspieler, and Franz Wotawa. “Potential of Heterogeneity in Collective Behaviors:
A Case Study on Heterogeneous Swarms.” In Principles and Practice of Multi-Agent
Systems (PRIMA 2015), 201–17, 2015.'
ieee: 'H. Hamann, T. Schmickl, D. Kengyel, P. Zahadat, G. Radspieler, and F. Wotawa,
“Potential of Heterogeneity in Collective Behaviors: A Case Study on Heterogeneous
Swarms,” in Principles and Practice of Multi-Agent Systems (PRIMA 2015),
2015, pp. 201–217.'
mla: 'Hamann, Heiko, et al. “Potential of Heterogeneity in Collective Behaviors:
A Case Study on Heterogeneous Swarms.” Principles and Practice of Multi-Agent
Systems (PRIMA 2015), 2015, pp. 201–17.'
short: 'H. Hamann, T. Schmickl, D. Kengyel, P. Zahadat, G. Radspieler, F. Wotawa,
in: Principles and Practice of Multi-Agent Systems (PRIMA 2015), 2015, pp. 201–217.'
date_created: 2020-10-13T09:24:32Z
date_updated: 2022-01-06T06:54:17Z
department:
- _id: '63'
- _id: '238'
language:
- iso: eng
page: 201-217
publication: Principles and Practice of Multi-Agent Systems (PRIMA 2015)
status: public
title: 'Potential of Heterogeneity in Collective Behaviors: A Case Study on Heterogeneous
Swarms'
type: conference
user_id: '15415'
year: '2015'
...
---
_id: '19992'
author:
- first_name: Gabriele
full_name: Valentini, Gabriele
last_name: Valentini
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
citation:
ama: 'Valentini G, Hamann H. Time-variant feedback processes in collective decision-making
systems: influence and effect of dynamic neighborhood sizes. Swarm Intelligence.
2015:153-176. doi:10.1007/s11721-015-0108-8'
apa: 'Valentini, G., & Hamann, H. (2015). Time-variant feedback processes in
collective decision-making systems: influence and effect of dynamic neighborhood
sizes. Swarm Intelligence, 153–176. https://doi.org/10.1007/s11721-015-0108-8'
bibtex: '@article{Valentini_Hamann_2015, title={Time-variant feedback processes
in collective decision-making systems: influence and effect of dynamic neighborhood
sizes}, DOI={10.1007/s11721-015-0108-8},
journal={Swarm Intelligence}, author={Valentini, Gabriele and Hamann, Heiko},
year={2015}, pages={153–176} }'
chicago: 'Valentini, Gabriele, and Heiko Hamann. “Time-Variant Feedback Processes
in Collective Decision-Making Systems: Influence and Effect of Dynamic Neighborhood
Sizes.” Swarm Intelligence, 2015, 153–76. https://doi.org/10.1007/s11721-015-0108-8.'
ieee: 'G. Valentini and H. Hamann, “Time-variant feedback processes in collective
decision-making systems: influence and effect of dynamic neighborhood sizes,”
Swarm Intelligence, pp. 153–176, 2015.'
mla: 'Valentini, Gabriele, and Heiko Hamann. “Time-Variant Feedback Processes in
Collective Decision-Making Systems: Influence and Effect of Dynamic Neighborhood
Sizes.” Swarm Intelligence, 2015, pp. 153–76, doi:10.1007/s11721-015-0108-8.'
short: G. Valentini, H. Hamann, Swarm Intelligence (2015) 153–176.
date_created: 2020-10-13T09:27:48Z
date_updated: 2022-01-06T06:54:17Z
department:
- _id: '63'
- _id: '238'
doi: 10.1007/s11721-015-0108-8
language:
- iso: eng
page: 153-176
publication: Swarm Intelligence
publication_identifier:
issn:
- 1935-3812
- 1935-3820
publication_status: published
status: public
title: 'Time-variant feedback processes in collective decision-making systems: influence
and effect of dynamic neighborhood sizes'
type: journal_article
user_id: '15415'
year: '2015'
...
---
_id: '20005'
author:
- first_name: Marco
full_name: Dorigo, Marco
last_name: Dorigo
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
- first_name: Gabriele
full_name: Valentini, Gabriele
last_name: Valentini
citation:
ama: 'Dorigo M, Hamann H, Valentini G. Efficient Decision-Making in a Self-Organizing
Robot Swarm: On the Speed Versus Accuracy Trade-Off. In: Proceedings of the
14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015).
; 2015.'
apa: 'Dorigo, M., Hamann, H., & Valentini, G. (2015). Efficient Decision-Making
in a Self-Organizing Robot Swarm: On the Speed Versus Accuracy Trade-Off. In Proceedings
of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015).'
bibtex: '@inproceedings{Dorigo_Hamann_Valentini_2015, title={Efficient Decision-Making
in a Self-Organizing Robot Swarm: On the Speed Versus Accuracy Trade-Off}, booktitle={Proceedings
of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015)},
author={Dorigo, Marco and Hamann, Heiko and Valentini, Gabriele}, year={2015}
}'
chicago: 'Dorigo, Marco, Heiko Hamann, and Gabriele Valentini. “Efficient Decision-Making
in a Self-Organizing Robot Swarm: On the Speed Versus Accuracy Trade-Off.” In
Proceedings of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems
(AAMAS 2015), 2015.'
ieee: 'M. Dorigo, H. Hamann, and G. Valentini, “Efficient Decision-Making in a Self-Organizing
Robot Swarm: On the Speed Versus Accuracy Trade-Off,” in Proceedings of the
14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015),
2015.'
mla: 'Dorigo, Marco, et al. “Efficient Decision-Making in a Self-Organizing Robot
Swarm: On the Speed Versus Accuracy Trade-Off.” Proceedings of the 14th Int.
Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015), 2015.'
short: 'M. Dorigo, H. Hamann, G. Valentini, in: Proceedings of the 14th Int. Conf.
on Autonomous Agents and Multiagent Systems (AAMAS 2015), 2015.'
date_created: 2020-10-15T12:29:26Z
date_updated: 2022-01-06T06:54:18Z
department:
- _id: '63'
- _id: '238'
language:
- iso: eng
publication: Proceedings of the 14th Int. Conf. on Autonomous Agents and Multiagent
Systems (AAMAS 2015)
status: public
title: 'Efficient Decision-Making in a Self-Organizing Robot Swarm: On the Speed Versus
Accuracy Trade-Off'
type: conference
user_id: '15415'
year: '2015'
...
---
_id: '20006'
author:
- first_name: Marco
full_name: Dorigo, Marco
last_name: Dorigo
- first_name: Heiko
full_name: Hamann, Heiko
last_name: Hamann
- first_name: Gabriele
full_name: Valentini, Gabriele
last_name: Valentini
citation:
ama: 'Dorigo M, Hamann H, Valentini G. Self-organized collective decisions in a
robot swarm. In: AAAI-15 Video Proceedings. ; 2015.'
apa: Dorigo, M., Hamann, H., & Valentini, G. (2015). Self-organized collective
decisions in a robot swarm. In AAAI-15 Video Proceedings.
bibtex: '@inproceedings{Dorigo_Hamann_Valentini_2015, title={Self-organized collective
decisions in a robot swarm}, booktitle={AAAI-15 Video Proceedings}, author={Dorigo,
Marco and Hamann, Heiko and Valentini, Gabriele}, year={2015} }'
chicago: Dorigo, Marco, Heiko Hamann, and Gabriele Valentini. “Self-Organized Collective
Decisions in a Robot Swarm.” In AAAI-15 Video Proceedings, 2015.
ieee: M. Dorigo, H. Hamann, and G. Valentini, “Self-organized collective decisions
in a robot swarm,” in AAAI-15 Video Proceedings, 2015.
mla: Dorigo, Marco, et al. “Self-Organized Collective Decisions in a Robot Swarm.”
AAAI-15 Video Proceedings, 2015.
short: 'M. Dorigo, H. Hamann, G. Valentini, in: AAAI-15 Video Proceedings, 2015.'
date_created: 2020-10-15T12:38:13Z
date_updated: 2022-01-06T06:54:18Z
department:
- _id: '63'
- _id: '238'
language:
- iso: eng
publication: AAAI-15 Video Proceedings
status: public
title: Self-organized collective decisions in a robot swarm
type: conference
user_id: '15415'
year: '2015'
...
---
_id: '266'
abstract:
- lang: eng
text: 'Many markets have seen a shift from the idea of buying and moved to leasing
instead. Arguably, the latter has been the major catalyst for their success. Ten
years ago, research realized this shift and initiated the study of "online leasing
problems" by introducing leasing to online optimization problems. Resources required
to provide a service in an "online leasing problem" are no more bought but leased
for different durations. In this paper, we provide an overview of results that
contribute to the understanding of "online resource leasing problems". '
author:
- first_name: Christine
full_name: Markarian, Christine
id: '37612'
last_name: Markarian
- first_name: Friedhelm
full_name: Meyer auf der Heide, Friedhelm
id: '15523'
last_name: Meyer auf der Heide
citation:
ama: 'Markarian C, Meyer auf der Heide F. Online Resource Leasing. In: Proceedings
of the 2015 ACM Symposium on Principles of Distributed Computing (PODC). ;
2015:343-344. doi:10.1145/2767386.2767454'
apa: Markarian, C., & Meyer auf der Heide, F. (2015). Online Resource Leasing.
In Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing
(PODC) (pp. 343–344). https://doi.org/10.1145/2767386.2767454
bibtex: '@inproceedings{Markarian_Meyer auf der Heide_2015, title={Online Resource
Leasing}, DOI={10.1145/2767386.2767454},
booktitle={Proceedings of the 2015 ACM Symposium on Principles of Distributed
Computing (PODC)}, author={Markarian, Christine and Meyer auf der Heide, Friedhelm},
year={2015}, pages={343–344} }'
chicago: Markarian, Christine, and Friedhelm Meyer auf der Heide. “Online Resource
Leasing.” In Proceedings of the 2015 ACM Symposium on Principles of Distributed
Computing (PODC), 343–44, 2015. https://doi.org/10.1145/2767386.2767454.
ieee: C. Markarian and F. Meyer auf der Heide, “Online Resource Leasing,” in Proceedings
of the 2015 ACM Symposium on Principles of Distributed Computing (PODC), 2015,
pp. 343–344.
mla: Markarian, Christine, and Friedhelm Meyer auf der Heide. “Online Resource Leasing.”
Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing
(PODC), 2015, pp. 343–44, doi:10.1145/2767386.2767454.
short: 'C. Markarian, F. Meyer auf der Heide, in: Proceedings of the 2015 ACM Symposium
on Principles of Distributed Computing (PODC), 2015, pp. 343–344.'
date_created: 2017-10-17T12:41:44Z
date_updated: 2022-01-06T06:57:22Z
ddc:
- '040'
department:
- _id: '63'
doi: 10.1145/2767386.2767454
file:
- access_level: closed
content_type: application/pdf
creator: florida
date_created: 2018-03-21T09:33:11Z
date_updated: 2018-03-21T09:33:11Z
file_id: '1478'
file_name: 266-p343-markarian.pdf
file_size: 679580
relation: main_file
success: 1
file_date_updated: 2018-03-21T09:33:11Z
has_accepted_license: '1'
page: 343-344
project:
- _id: '1'
name: SFB 901
- _id: '5'
name: SFB 901 - Subprojekt A1
- _id: '16'
name: SFB 901 - Subprojekt C4
- _id: '2'
name: SFB 901 - Project Area A
- _id: '4'
name: SFB 901 - Project Area C
publication: Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing
(PODC)
status: public
title: Online Resource Leasing
type: conference
user_id: '15504'
year: '2015'
...
---
_id: '267'
author:
- first_name: Christine
full_name: Markarian, Christine
id: '37612'
last_name: Markarian
citation:
ama: Markarian C. Online Resource Leasing. Universität Paderborn; 2015.
apa: Markarian, C. (2015). Online Resource Leasing. Universität Paderborn.
bibtex: '@book{Markarian_2015, title={Online Resource Leasing}, publisher={Universität
Paderborn}, author={Markarian, Christine}, year={2015} }'
chicago: Markarian, Christine. Online Resource Leasing. Universität Paderborn,
2015.
ieee: C. Markarian, Online Resource Leasing. Universität Paderborn, 2015.
mla: Markarian, Christine. Online Resource Leasing. Universität Paderborn,
2015.
short: C. Markarian, Online Resource Leasing, Universität Paderborn, 2015.
date_created: 2017-10-17T12:41:44Z
date_updated: 2022-01-06T06:57:26Z
ddc:
- '040'
department:
- _id: '63'
file:
- access_level: closed
content_type: application/pdf
creator: florida
date_created: 2018-03-21T09:33:41Z
date_updated: 2018-03-21T09:33:41Z
file_id: '1479'
file_name: 267-Dissertation_-_Markarian.pdf
file_size: 1328685
relation: main_file
success: 1
file_date_updated: 2018-03-21T09:33:41Z
has_accepted_license: '1'
language:
- iso: eng
project:
- _id: '1'
name: SFB 901
- _id: '16'
name: SFB 901 - Subprojekt C4
- _id: '4'
name: SFB 901 - Project Area C
publisher: Universität Paderborn
related_material:
link:
- relation: confirmation
url: http://nbn-resolving.de/urn:nbn:de:hbz:466:2-16656
status: public
supervisor:
- first_name: Friedhelm
full_name: Meyer auf der Heide, Friedhelm
id: '15523'
last_name: Meyer auf der Heide
title: Online Resource Leasing
type: dissertation
user_id: '15415'
year: '2015'
...
---
_id: '320'
abstract:
- lang: eng
text: 'We consider structural and algorithmic questions related to the Nash dynamics
of weighted congestion games. In weighted congestion games with linear latency
functions, the existence of pure Nash equilibria is guaranteed by a potential
function argument. Unfortunately, this proof of existence is inefficient and computing
pure Nash equilibria in such games is a PLS-hard problem even when all players
have unit weights. The situation gets worse when superlinear (e.g., quadratic)
latency functions come into play; in this case, the Nash dynamics of the game
may contain cycles and pure Nash equilibria may not even exist. Given these obstacles,
we consider approximate pure Nash equilibria as alternative solution concepts.
A ρ--approximate pure Nash equilibrium is a state of a (weighted congestion) game
from which no player has any incentive to deviate in order to improve her cost
by a multiplicative factor higher than ρ. Do such equilibria exist for small values
of ρ? And if so, can we compute them efficiently?We provide positive answers to
both questions for weighted congestion games with polynomial latency functions
by exploiting an “approximation” of such games by a new class of potential games
that we call Ψ-games. This allows us to show that these games have d!-approximate
pure Nash equilibria, where d is the maximum degree of the latency functions.
Our main technical contribution is an efficient algorithm for computing O(1)-approximate
pure Nash equilibria when d is a constant. For games with linear latency functions,
the approximation guarantee is 3+√5/2 + Oγ for arbitrarily small γ > 0; for latency
functions with maximum degree d≥ 2, it is d2d+o(d). The running time is polynomial
in the number of bits in the representation of the game and 1/γ. As a byproduct
of our techniques, we also show the following interesting structural statement
for weighted congestion games with polynomial latency functions of maximum degree
d ≥ 2: polynomially-long sequences of best-response moves from any initial state
to a dO(d2)-approximate pure Nash equilibrium exist and can be efficiently identified
in such games as long as d is a constant.To the best of our knowledge, these are
the first positive algorithmic results for approximate pure Nash equilibria in
weighted congestion games. Our techniques significantly extend our recent work
on unweighted congestion games through the use of Ψ-games. The concept of approximating
nonpotential games by potential ones is interesting in itself and might have further
applications.'
article_number: '2'
author:
- first_name: Ioannis
full_name: Caragiannis, Ioannis
last_name: Caragiannis
- first_name: Angelo
full_name: Fanelli, Angelo
last_name: Fanelli
- first_name: Nick
full_name: Gravin, Nick
last_name: Gravin
- first_name: Alexander
full_name: Skopalik, Alexander
id: '40384'
last_name: Skopalik
citation:
ama: 'Caragiannis I, Fanelli A, Gravin N, Skopalik A. Approximate Pure Nash Equilibria
in Weighted Congestion Games: Existence, Efficient Computation, and Structure.
Transactions on Economics and Computation. 2015;3(1). doi:10.1145/2614687'
apa: 'Caragiannis, I., Fanelli, A., Gravin, N., & Skopalik, A. (2015). Approximate
Pure Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation,
and Structure. Transactions on Economics and Computation, 3(1).
https://doi.org/10.1145/2614687'
bibtex: '@article{Caragiannis_Fanelli_Gravin_Skopalik_2015, title={Approximate Pure
Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation,
and Structure}, volume={3}, DOI={10.1145/2614687},
number={12}, journal={Transactions on Economics and Computation}, publisher={ACM},
author={Caragiannis, Ioannis and Fanelli, Angelo and Gravin, Nick and Skopalik,
Alexander}, year={2015} }'
chicago: 'Caragiannis, Ioannis, Angelo Fanelli, Nick Gravin, and Alexander Skopalik.
“Approximate Pure Nash Equilibria in Weighted Congestion Games: Existence, Efficient
Computation, and Structure.” Transactions on Economics and Computation
3, no. 1 (2015). https://doi.org/10.1145/2614687.'
ieee: 'I. Caragiannis, A. Fanelli, N. Gravin, and A. Skopalik, “Approximate Pure
Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation,
and Structure,” Transactions on Economics and Computation, vol. 3, no.
1, 2015.'
mla: 'Caragiannis, Ioannis, et al. “Approximate Pure Nash Equilibria in Weighted
Congestion Games: Existence, Efficient Computation, and Structure.” Transactions
on Economics and Computation, vol. 3, no. 1, 2, ACM, 2015, doi:10.1145/2614687.'
short: I. Caragiannis, A. Fanelli, N. Gravin, A. Skopalik, Transactions on Economics
and Computation 3 (2015).
date_created: 2017-10-17T12:41:54Z
date_updated: 2022-01-06T06:59:04Z
ddc:
- '040'
department:
- _id: '63'
- _id: '541'
doi: 10.1145/2614687
file:
- access_level: closed
content_type: application/pdf
creator: florida
date_created: 2018-03-20T07:40:55Z
date_updated: 2018-03-20T07:40:55Z
file_id: '1433'
file_name: 320-a2-caragiannis.pdf
file_size: 260503
relation: main_file
success: 1
file_date_updated: 2018-03-20T07:40:55Z
has_accepted_license: '1'
intvolume: ' 3'
issue: '1'
language:
- iso: eng
project:
- _id: '1'
name: SFB 901
- _id: '7'
name: SFB 901 - Subprojekt A3
- _id: '2'
name: SFB 901 - Project Area A
publication: Transactions on Economics and Computation
publisher: ACM
status: public
title: 'Approximate Pure Nash Equilibria in Weighted Congestion Games: Existence,
Efficient Computation, and Structure'
type: journal_article
user_id: '477'
volume: 3
year: '2015'
...
---
_id: '316'
author:
- first_name: Jannis
full_name: Pautz, Jannis
last_name: Pautz
citation:
ama: Pautz J. Budget Games with Priced Strategies. Universität Paderborn;
2015.
apa: Pautz, J. (2015). Budget Games with priced strategies. Universität Paderborn.
bibtex: '@book{Pautz_2015, title={Budget Games with priced strategies}, publisher={Universität
Paderborn}, author={Pautz, Jannis}, year={2015} }'
chicago: Pautz, Jannis. Budget Games with Priced Strategies. Universität
Paderborn, 2015.
ieee: J. Pautz, Budget Games with priced strategies. Universität Paderborn,
2015.
mla: Pautz, Jannis. Budget Games with Priced Strategies. Universität Paderborn,
2015.
short: J. Pautz, Budget Games with Priced Strategies, Universität Paderborn, 2015.
date_created: 2017-10-17T12:41:53Z
date_updated: 2022-01-06T06:59:01Z
department:
- _id: '63'
- _id: '541'
project:
- _id: '1'
name: SFB 901
- _id: '7'
name: SFB 901 - Subprojekt A3
- _id: '2'
name: SFB 901 - Project Area A
publisher: Universität Paderborn
status: public
supervisor:
- first_name: Alexander
full_name: Skopalik, Alexander
id: '40384'
last_name: Skopalik
title: Budget Games with priced strategies
type: bachelorsthesis
user_id: '14052'
year: '2015'
...
---
_id: '317'
author:
- first_name: Claudius
full_name: Jähn, Claudius
last_name: Jähn
citation:
ama: Jähn C. Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen.
Universität Paderborn; 2015.
apa: Jähn, C. (2015). Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen.
Universität Paderborn.
bibtex: '@book{Jähn_2015, title={Bewertung von Renderingalgorithmen für komplexe
3-D-Szenen}, publisher={Universität Paderborn}, author={Jähn, Claudius}, year={2015}
}'
chicago: Jähn, Claudius. Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen.
Universität Paderborn, 2015.
ieee: C. Jähn, Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen.
Universität Paderborn, 2015.
mla: Jähn, Claudius. Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen.
Universität Paderborn, 2015.
short: C. Jähn, Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen, Universität
Paderborn, 2015.
date_created: 2017-10-17T12:41:53Z
date_updated: 2022-01-06T06:59:02Z
ddc:
- '040'
department:
- _id: '63'
file:
- access_level: closed
content_type: application/pdf
creator: florida
date_created: 2018-03-21T09:20:34Z
date_updated: 2018-03-21T09:20:34Z
file_id: '1462'
file_name: 317-Dissertation_ClaudiusJaehn.pdf
file_size: 20442332
relation: main_file
success: 1
file_date_updated: 2018-03-21T09:20:34Z
has_accepted_license: '1'
language:
- iso: ger
publisher: Universität Paderborn
status: public
supervisor:
- first_name: Friedhelm
full_name: Meyer auf der Heide, Friedhelm
id: '15523'
last_name: Meyer auf der Heide
title: Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen
type: dissertation
user_id: '14052'
year: '2015'
...
---
_id: '270'
author:
- first_name: Sebastian
full_name: Abshoff, Sebastian
last_name: Abshoff
citation:
ama: Abshoff S. On the Complexity of Fundamental Problems in Dynamic Ad-Hoc Networks.
Universität Paderborn; 2015.
apa: Abshoff, S. (2015). On the Complexity of Fundamental Problems in Dynamic
Ad-hoc Networks. Universität Paderborn.
bibtex: '@book{Abshoff_2015, title={On the Complexity of Fundamental Problems in
Dynamic Ad-hoc Networks}, publisher={Universität Paderborn}, author={Abshoff,
Sebastian}, year={2015} }'
chicago: Abshoff, Sebastian. On the Complexity of Fundamental Problems in Dynamic
Ad-Hoc Networks. Universität Paderborn, 2015.
ieee: S. Abshoff, On the Complexity of Fundamental Problems in Dynamic Ad-hoc
Networks. Universität Paderborn, 2015.
mla: Abshoff, Sebastian. On the Complexity of Fundamental Problems in Dynamic
Ad-Hoc Networks. Universität Paderborn, 2015.
short: S. Abshoff, On the Complexity of Fundamental Problems in Dynamic Ad-Hoc Networks,
Universität Paderborn, 2015.
date_created: 2017-10-17T12:41:44Z
date_updated: 2022-01-06T06:57:32Z
ddc:
- '040'
department:
- _id: '63'
file:
- access_level: closed
content_type: application/pdf
creator: florida
date_created: 2018-03-21T09:30:02Z
date_updated: 2018-03-21T09:30:02Z
file_id: '1476'
file_name: 270-Dissertation_-_Abshoff.pdf
file_size: 448614
relation: main_file
success: 1
file_date_updated: 2018-03-21T09:30:02Z
has_accepted_license: '1'
project:
- _id: '1'
name: SFB 901
- _id: '5'
name: SFB 901 - Subprojekt A1
- _id: '2'
name: SFB 901 - Project Area A
publisher: Universität Paderborn
status: public
supervisor:
- first_name: Friedhelm
full_name: Meyer auf der Heide, Friedhelm
id: '15523'
last_name: Meyer auf der Heide
title: On the Complexity of Fundamental Problems in Dynamic Ad-hoc Networks
type: dissertation
user_id: '477'
year: '2015'
...
---
_id: '271'
abstract:
- lang: eng
text: In \emph{bandwidth allocation games} (BAGs), the strategy of a player consists
of various demands on different resources. The player's utility is at most the
sum of these demands, provided they are fully satisfied. Every resource has a
limited capacity and if it is exceeded by the total demand, it has to be split
between the players. Since these games generally do not have pure Nash equilibria,
we consider approximate pure Nash equilibria, in which no player can improve her
utility by more than some fixed factor $\alpha$ through unilateral strategy changes.
There is a threshold $\alpha_\delta$ (where $\delta$ is a parameter that limits
the demand of each player on a specific resource) such that $\alpha$-approximate
pure Nash equilibria always exist for $\alpha \geq \alpha_\delta$, but not for
$\alpha < \alpha_\delta$. We give both upper and lower bounds on this threshold
$\alpha_\delta$ and show that the corresponding decision problem is ${\sf NP}$-hard.
We also show that the $\alpha$-approximate price of anarchy for BAGs is $\alpha+1$.
For a restricted version of the game, where demands of players only differ slightly
from each other (e.g. symmetric games), we show that approximate Nash equilibria
can be reached (and thus also be computed) in polynomial time using the best-response
dynamic. Finally, we show that a broader class of utility-maximization games (which
includes BAGs) converges quickly towards states whose social welfare is close
to the optimum.
author:
- first_name: Maximilian
full_name: Drees, Maximilian
last_name: Drees
- first_name: Matthias
full_name: Feldotto, Matthias
id: '14052'
last_name: Feldotto
orcid: 0000-0003-1348-6516
- first_name: Sören
full_name: Riechers, Sören
last_name: Riechers
- first_name: Alexander
full_name: Skopalik, Alexander
id: '40384'
last_name: Skopalik
citation:
ama: 'Drees M, Feldotto M, Riechers S, Skopalik A. On Existence and Properties of
Approximate Pure Nash Equilibria in Bandwidth Allocation Games. In: Proceedings
of the 8th International Symposium on Algorithmic Game Theory (SAGT). Lecture
Notes in Computer Science. ; 2015:178-189. doi:10.1007/978-3-662-48433-3_14'
apa: Drees, M., Feldotto, M., Riechers, S., & Skopalik, A. (2015). On Existence
and Properties of Approximate Pure Nash Equilibria in Bandwidth Allocation Games.
In Proceedings of the 8th International Symposium on Algorithmic Game Theory
(SAGT) (pp. 178–189). https://doi.org/10.1007/978-3-662-48433-3_14
bibtex: '@inproceedings{Drees_Feldotto_Riechers_Skopalik_2015, series={Lecture Notes
in Computer Science}, title={On Existence and Properties of Approximate Pure Nash
Equilibria in Bandwidth Allocation Games}, DOI={10.1007/978-3-662-48433-3_14},
booktitle={Proceedings of the 8th International Symposium on Algorithmic Game
Theory (SAGT)}, author={Drees, Maximilian and Feldotto, Matthias and Riechers,
Sören and Skopalik, Alexander}, year={2015}, pages={178–189}, collection={Lecture
Notes in Computer Science} }'
chicago: Drees, Maximilian, Matthias Feldotto, Sören Riechers, and Alexander Skopalik.
“On Existence and Properties of Approximate Pure Nash Equilibria in Bandwidth
Allocation Games.” In Proceedings of the 8th International Symposium on Algorithmic
Game Theory (SAGT), 178–89. Lecture Notes in Computer Science, 2015. https://doi.org/10.1007/978-3-662-48433-3_14.
ieee: M. Drees, M. Feldotto, S. Riechers, and A. Skopalik, “On Existence and Properties
of Approximate Pure Nash Equilibria in Bandwidth Allocation Games,” in Proceedings
of the 8th International Symposium on Algorithmic Game Theory (SAGT), 2015,
pp. 178–189.
mla: Drees, Maximilian, et al. “On Existence and Properties of Approximate Pure
Nash Equilibria in Bandwidth Allocation Games.” Proceedings of the 8th International
Symposium on Algorithmic Game Theory (SAGT), 2015, pp. 178–89, doi:10.1007/978-3-662-48433-3_14.
short: 'M. Drees, M. Feldotto, S. Riechers, A. Skopalik, in: Proceedings of the
8th International Symposium on Algorithmic Game Theory (SAGT), 2015, pp. 178–189.'
date_created: 2017-10-17T12:41:45Z
date_updated: 2022-01-06T06:57:34Z
ddc:
- '040'
department:
- _id: '63'
- _id: '541'
doi: 10.1007/978-3-662-48433-3_14
external_id:
arxiv:
- '1507.02908'
file:
- access_level: closed
content_type: application/pdf
creator: florida
date_created: 2018-03-21T09:29:34Z
date_updated: 2018-03-21T09:29:34Z
file_id: '1475'
file_name: 271-chp_3A10.1007_2F978-3-662-48433-3_14.pdf
file_size: 256718
relation: main_file
success: 1
file_date_updated: 2018-03-21T09:29:34Z
has_accepted_license: '1'
page: 178-189
project:
- _id: '1'
name: SFB 901
- _id: '7'
name: SFB 901 - Subprojekt A3
- _id: '16'
name: SFB 901 - Subproject C4
- _id: '2'
name: SFB 901 - Project Area A
- _id: '4'
name: SFB 901 - Project Area C
publication: Proceedings of the 8th International Symposium on Algorithmic Game Theory
(SAGT)
series_title: Lecture Notes in Computer Science
status: public
title: On Existence and Properties of Approximate Pure Nash Equilibria in Bandwidth
Allocation Games
type: conference
user_id: '14052'
year: '2015'
...
---
_id: '274'
abstract:
- lang: eng
text: Consider the problem in which n jobs that are classified into k types are
to be scheduled on m identical machines without preemption. A machine requires
a proper setup taking s time units before processing jobs of a given type. The
objective is to minimize the makespan of the resulting schedule. We design and
analyze an approximation algorithm that runs in time polynomial in n,m and k and
computes a solution with an approximation factor that can be made arbitrarily
close to 3/2.
author:
- first_name: Alexander
full_name: Mäcker, Alexander
id: '13536'
last_name: Mäcker
- first_name: Manuel
full_name: Malatyali, Manuel
last_name: Malatyali
- first_name: Friedhelm
full_name: Meyer auf der Heide, Friedhelm
id: '15523'
last_name: Meyer auf der Heide
- first_name: Sören
full_name: Riechers, Sören
last_name: Riechers
citation:
ama: 'Mäcker A, Malatyali M, Meyer auf der Heide F, Riechers S. Non-preemptive Scheduling
on Machines with Setup Times. In: Dehne F, Sack JR, Stege U, eds. Algorithms
and Data Structures: 14th International Symposium, WADS 2015, Victoria, BC, Canada,
August 5-7, 2015. Proceedings. Lecture Notes in Computer Science. ; 2015:542--553.
doi:10.1007/978-3-319-21840-3_45'
apa: 'Mäcker, A., Malatyali, M., Meyer auf der Heide, F., & Riechers, S. (2015).
Non-preemptive Scheduling on Machines with Setup Times. In F. Dehne, J. R. Sack,
& U. Stege (Eds.), Algorithms and Data Structures: 14th International Symposium,
WADS 2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings (pp. 542--553).
https://doi.org/10.1007/978-3-319-21840-3_45'
bibtex: '@inproceedings{Mäcker_Malatyali_Meyer auf der Heide_Riechers_2015, series={Lecture
Notes in Computer Science}, title={Non-preemptive Scheduling on Machines with
Setup Times}, DOI={10.1007/978-3-319-21840-3_45},
booktitle={Algorithms and Data Structures: 14th International Symposium, WADS
2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings}, author={Mäcker, Alexander
and Malatyali, Manuel and Meyer auf der Heide, Friedhelm and Riechers, Sören},
editor={Dehne, Frank and Sack, Jörg Rüdiger and Stege, UlrikeEditors}, year={2015},
pages={542--553}, collection={Lecture Notes in Computer Science} }'
chicago: 'Mäcker, Alexander, Manuel Malatyali, Friedhelm Meyer auf der Heide, and
Sören Riechers. “Non-Preemptive Scheduling on Machines with Setup Times.” In Algorithms
and Data Structures: 14th International Symposium, WADS 2015, Victoria, BC, Canada,
August 5-7, 2015. Proceedings, edited by Frank Dehne, Jörg Rüdiger Sack, and
Ulrike Stege, 542--553. Lecture Notes in Computer Science, 2015. https://doi.org/10.1007/978-3-319-21840-3_45.'
ieee: 'A. Mäcker, M. Malatyali, F. Meyer auf der Heide, and S. Riechers, “Non-preemptive
Scheduling on Machines with Setup Times,” in Algorithms and Data Structures:
14th International Symposium, WADS 2015, Victoria, BC, Canada, August 5-7, 2015.
Proceedings, 2015, pp. 542--553.'
mla: 'Mäcker, Alexander, et al. “Non-Preemptive Scheduling on Machines with Setup
Times.” Algorithms and Data Structures: 14th International Symposium, WADS
2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings, edited by Frank
Dehne et al., 2015, pp. 542--553, doi:10.1007/978-3-319-21840-3_45.'
short: 'A. Mäcker, M. Malatyali, F. Meyer auf der Heide, S. Riechers, in: F. Dehne,
J.R. Sack, U. Stege (Eds.), Algorithms and Data Structures: 14th International
Symposium, WADS 2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings, 2015,
pp. 542--553.'
date_created: 2017-10-17T12:41:45Z
date_updated: 2022-01-06T06:57:39Z
ddc:
- '040'
department:
- _id: '63'
doi: 10.1007/978-3-319-21840-3_45
editor:
- first_name: Frank
full_name: Dehne, Frank
last_name: Dehne
- first_name: Jörg Rüdiger
full_name: Sack, Jörg Rüdiger
last_name: Sack
- first_name: Ulrike
full_name: Stege, Ulrike
last_name: Stege
file:
- access_level: closed
content_type: application/pdf
creator: florida
date_created: 2018-03-21T09:28:34Z
date_updated: 2018-03-21T09:28:34Z
file_id: '1473'
file_name: 274-chp_3A10.1007_2F978-3-319-21840-3_45.pdf
file_size: 215498
relation: main_file
success: 1
file_date_updated: 2018-03-21T09:28:34Z
has_accepted_license: '1'
page: 542--553
project:
- _id: '1'
name: SFB 901
- _id: '16'
name: SFB 901 - Subprojekt C4
- _id: '4'
name: SFB 901 - Project Area C
publication: 'Algorithms and Data Structures: 14th International Symposium, WADS 2015,
Victoria, BC, Canada, August 5-7, 2015. Proceedings'
series_title: Lecture Notes in Computer Science
status: public
title: Non-preemptive Scheduling on Machines with Setup Times
type: conference
user_id: '15504'
year: '2015'
...