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ATAL
2009
Springer
14 years 6 months ago
Increasing the expressiveness of virtual agents: autonomous generation of speech and gesture for spatial description tasks
Embodied conversational agents are required to be able to express themselves convincingly and autonomously. Based on an empirial study on spatial descriptions of landmarks in dire...
Kirsten Bergmann, Stefan Kopp
ATAL
2009
Springer
14 years 6 months ago
Achieving goals in decentralized POMDPs
Coordination of multiple agents under uncertainty in the decentralized POMDP model is known to be NEXP-complete, even when the agents have a joint set of goals. Nevertheless, we s...
Christopher Amato, Shlomo Zilberstein
ATAL
2009
Springer
14 years 6 months ago
False name manipulations in weighted voting games: splitting, merging and annexation
An important aspect of mechanism design in social choice protocols and multiagent systems is to discourage insincere and manipulative behaviour. We examine the computational compl...
Haris Aziz, Mike Paterson
ATAL
2009
Springer
14 years 6 months ago
Using rituals to express cultural differences in synthetic characters
There is currently an ongoing demand for richer Intelligent Virtual Environments (IVEs) populated with social intelligent agents. As a result, many agent architectures are taking ...
Samuel Mascarenhas, João Dias, Nuno Afonso,...
ATAL
2009
Springer
14 years 6 months ago
Caching schemes for DCOP search algorithms
Distributed Constraint Optimization (DCOP) is useful for solving agent-coordination problems. Any-space DCOP search algorithms require only a small amount of memory but can be spe...
William Yeoh, Pradeep Varakantham, Sven Koenig
ATAL
2009
Springer
14 years 6 months ago
Computational aspects of Shapley's saddles
Game-theoretic solution concepts, such as Nash equilibrium, are playing an ever increasing role in the study of systems of autonomous computational agents. A common criticism of N...
Felix Brandt, Markus Brill, Felix A. Fischer, Paul...
ATAL
2009
Springer
14 years 6 months ago
Characterizing false-name-proof allocation rules in combinatorial auctions
A combinatorial auction mechanism consists of an allocation rule that defines the allocation of goods for each agent, and a payment rule that defines the payment of each winner....
Taiki Todo, Atsushi Iwasaki, Makoto Yokoo, Yuko Sa...
ATAL
2009
Springer
14 years 6 months ago
Evolutionary testing of autonomous software agents
A system built in terms of autonomous agents may require even greater correctness assurance than one which is merely reacting to the immediate control of its users. Agents make su...
Cu D. Nguyen, Anna Perini, Paolo Tonella, Simon Mi...
ATAL
2009
Springer
14 years 6 months ago
Effective tag mechanisms for evolving cooperation
Certain observable features (tags), shared by a group of similar agents, can be used to signal intentions and can be effectively used to infer unobservable properties. Such infere...
Matthew Matlock, Sandip Sen
ATAL
2009
Springer
14 years 6 months ago
Boolean combinations of weighted voting games
Weighted voting games are a natural and practically important class of simple coalitional games, in which each agent is assigned a numeric weight, and a coalition is deemed to be ...
Piotr Faliszewski, Edith Elkind, Michael Wooldridg...