Publications related to Group theory

Variance stabilizing transformations for meta-analysis of binary data

The binary data are often used in the medical field or in social sciences to study an effect between two groups. It can be for example the effect of a treatment between a treated and a control group. The outcome will be the number of successes and the tota ...

2010

Foraging behavior of fish schools via diffusion adaptation

Ali H. Sayed

Fish organize themselves into schools as a way to defend against predators and improve foraging efficiency. In this work we develop a model for food foraging and explain how a school of fish can move as a group if every fish were to employ a distributed st ...

IEEE2010

Symmetry and selection rules for localized surface plasmon resonances in nanostructures

Olivier Martin, Benjamin Gallinet

We describe a general theoretical framework based on the Bergman spectral representation to study how a nanostructure interacts with an external electromagnetic field. The selection rules for localized surface plasmon resonances (LSPRs) are obtained by imp ...

2010

Annihilating Polynomials for Quadratic Forms

Klaas-Tido Rühl

Let K be a field with char(K) ≠ 2. The Witt-Grothendieck ring (K) and the Witt ring W (K) of K are both quotients of the group ring ℤ[𝓖(K)], where 𝓖(K) := K*/(K*)2 is the square class group of K. Since ℤ[𝓖(K)] is integra ...

EPFL2010

Beat-based synchronization and steering for groups of fixed-wing flying robots

Dario Floreano, Jean-Christophe Zufferey, Sabine Hauert, Severin Leven

Groups of fixed-wing robots can benefit from moving in synchrony to share sensing and communication capabilities, avoid collisions or produce visually pleasing choreographies. For this reason, we provide a strategy to produce global group movement that can ...

2010

Chemical Hieroglyphs: Abstract Depiction of Complex Void Space Topology of Nanoporous Materials

Berend Smit

In general, most porous materials are so complex that structural information cannot be easily observed with 3D visualization tools. To address this problem, we have developed a special abstract 2D representation to depict all important topological features ...

2010

Graph-Constrained Group Testing

Amin Karbasi, Mahdi Cheraghchi Bashi Astaneh, Soheil Mohajerzefreh

Non-adaptive group testing involves grouping arbitrary subsets of

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items into different pools and identifying defective items based on tests obtained for each pool. Motivated by applications in network tomography, sensor networks and infection propagati ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Characterising Conversationsal Group Dynamics Using Nonverbal Behaviour

Daniel Gatica-Perez, Dinesh Babu Jayagopi

This paper addresses the novel problemof characterizing conversational group dynamics. It is well documented in social psychology that depending on the objectives a group, the dynamics are different. For example, a competitive meeting has a different objec ...

2009

Discovering Group Nonverbal Conversational Patterns with Topics

Daniel Gatica-Perez, Dinesh Babu Jayagopi

This paper addresses the problem of discovering conversa- tional group dynamics from nonverbal cues extracted from thin-slices of interaction. We first propose and analyze a novel thin-slice interaction descriptor - a bag of group non- verbal patterns - wh ...

2009

Non-unitarisable representations and random forests

Nicolas Monod

We establish a connection between Dixmier's unitarisability problem and the expected degree of random forests on a group. As a consequence, a residually finite group is non-unitarisable if its first L2-Betti number is non-zero or if it is finitely generate ...

Oxford University Press2009

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Variance stabilizing transformations for meta-analysis of binary data

Foraging behavior of fish schools via diffusion adaptation

Symmetry and selection rules for localized surface plasmon resonances in nanostructures

Annihilating Polynomials for Quadratic Forms

Beat-based synchronization and steering for groups of fixed-wing flying robots

Chemical Hieroglyphs: Abstract Depiction of Complex Void Space Topology of Nanoporous Materials

Graph-Constrained Group Testing

Characterising Conversationsal Group Dynamics Using Nonverbal Behaviour

Discovering Group Nonverbal Conversational Patterns with Topics

Non-unitarisable representations and random forests

Variance stabilizing transformations for meta-analysis of binary data

Foraging behavior of fish schools via diffusion adaptation

Chemical Hieroglyphs: Abstract Depiction of Complex Void Space Topology of Nanoporous Materials

Symmetry and selection rules for localized surface plasmon resonances in nanostructures

Annihilating Polynomials for Quadratic Forms

Beat-based synchronization and steering for groups of fixed-wing flying robots

Non-unitarisable representations and random forests

Characterising Conversationsal Group Dynamics Using Nonverbal Behaviour

Discovering Group Nonverbal Conversational Patterns with Topics

Graph-Constrained Group Testing