46,843 research outputs found
Addressing Constraint Failures in Distributed Dialogue Protocols
Early agent communication languages lacked the means to coordinate the interaction between
agents. The importance of coordination was better appreciated when open systems became
in favor. Some solutions have been proposed; however, these normally rely on centralized
gatekeepers. Distributed Dialogues, on the other hand, provide both communication and coordination
protocols for multi-agent systems. They do that without the need to re-program agents
every time they need to adapt to a new dialogue system and without the need for centralized
gatekeepers for coordination.
However, these dialogue protocols still aren’t tolerant to failure. When an agent does not
respond appropriately, the dialogue simply stops. This usually happens when constraints are
broken. This dissertation addresses these kinds of failure by offering ‘induced backtracking’ to
explore other parts of the dialogue. It also proposes a negotiation protocol that could be used
when some failed constraints are better dealt with by negotiation
Natural Language Does Not Emerge 'Naturally' in Multi-Agent Dialog
A number of recent works have proposed techniques for end-to-end learning of
communication protocols among cooperative multi-agent populations, and have
simultaneously found the emergence of grounded human-interpretable language in
the protocols developed by the agents, all learned without any human
supervision!
In this paper, using a Task and Tell reference game between two agents as a
testbed, we present a sequence of 'negative' results culminating in a
'positive' one -- showing that while most agent-invented languages are
effective (i.e. achieve near-perfect task rewards), they are decidedly not
interpretable or compositional.
In essence, we find that natural language does not emerge 'naturally',
despite the semblance of ease of natural-language-emergence that one may gather
from recent literature. We discuss how it is possible to coax the invented
languages to become more and more human-like and compositional by increasing
restrictions on how two agents may communicate.Comment: 9 pages, 7 figures, 2 tables, accepted at EMNLP 2017 as short pape
Proceedings of the 11th European Agent Systems Summer School Student Session
This volume contains the papers presented at the Student Session of the 11th European Agent Systems Summer School (EASSS) held on 2nd of September 2009 at Educatorio della Providenza, Turin, Italy. The Student Session, organised by students, is designed to encourage student interaction and feedback from the tutors. By providing the students with a conference-like setup, both in the presentation and in the review process, students have the opportunity to prepare their own submission, go through the selection process and present their work to each other and their interests to their fellow students as well as internationally leading experts in the agent field, both from the theoretical and the practical sector. Table of Contents: Andrew Koster, Jordi Sabater Mir and Marco Schorlemmer, Towards an inductive algorithm for learning trust alignment . . . 5; Angel Rolando Medellin, Katie Atkinson and Peter McBurney, A Preliminary Proposal for Model Checking Command Dialogues. . . 12; Declan Mungovan, Enda Howley and Jim Duggan, Norm Convergence in Populations of Dynamically Interacting Agents . . . 19; Akın Günay, Argumentation on Bayesian Networks for Distributed Decision Making . . 25; Michael Burkhardt, Marco Luetzenberger and Nils Masuch, Towards Toolipse 2: Tool Support for the JIAC V Agent Framework . . . 30; Joseph El Gemayel, The Tenacity of Social Actors . . . 33; Cristian Gratie, The Impact of Routing on Traffic Congestion . . . 36; Andrei-Horia Mogos and Monica Cristina Voinescu, A Rule-Based Psychologist Agent for Improving the Performances of a Sportsman . . . 39; --Autonomer Agent,Agent,Künstliche Intelligenz
On the emergent Semantic Web and overlooked issues
The emergent Semantic Web, despite being in its infancy, has already received a lotof attention from academia and industry. This resulted in an abundance of prototype systems and discussion most of which are centred around the underlying infrastructure. However, when we critically review the work done to date we realise that there is little discussion with respect to the vision of the Semantic Web. In particular, there is an observed dearth of discussion on how to deliver knowledge sharing in an environment such as the Semantic Web in effective and efficient manners. There are a lot of overlooked issues, associated with agents and trust to hidden assumptions made with respect to knowledge representation and robust reasoning in a distributed environment. These issues could potentially hinder further development if not considered at the early stages of designing Semantic Web systems. In this perspectives paper, we aim to help engineers and practitioners of the Semantic Web by raising awareness of these issues
Extend Commitment Protocols with Temporal Regulations: Why and How
The proposal of Elisa Marengo's thesis is to extend commitment protocols to
explicitly account for temporal regulations. This extension will satisfy two
needs: (1) it will allow representing, in a flexible and modular way, temporal
regulations with a normative force, posed on the interaction, so as to
represent conventions, laws and suchlike; (2) it will allow committing to
complex conditions, which describe not only what will be achieved but to some
extent also how. These two aspects will be deeply investigated in the proposal
of a unified framework, which is part of the ongoing work and will be included
in the thesis.Comment: Proceedings of the Doctoral Consortium and Poster Session of the 5th
International Symposium on Rules (RuleML 2011@IJCAI), pages 1-8
(arXiv:1107.1686
Analysis of Dialogical Argumentation via Finite State Machines
Dialogical argumentation is an important cognitive activity by which agents
exchange arguments and counterarguments as part of some process such as
discussion, debate, persuasion and negotiation. Whilst numerous formal systems
have been proposed, there is a lack of frameworks for implementing and
evaluating these proposals. First-order executable logic has been proposed as a
general framework for specifying and analysing dialogical argumentation. In
this paper, we investigate how we can implement systems for dialogical
argumentation using propositional executable logic. Our approach is to present
and evaluate an algorithm that generates a finite state machine that reflects a
propositional executable logic specification for a dialogical argumentation
together with an initial state. We also consider how the finite state machines
can be analysed, with the minimax strategy being used as an illustration of the
kinds of empirical analysis that can be undertaken.Comment: 10 page
Towards Communicating Agents and Avatars in Virtual Worlds
We report about ongoing research in a virtual reality environment where visitors can interact with agents that help them to obtain information, to perform certain transactions and to collaborate with them in order to get some tasks done. In addition, in a multi-user version of the system visitors can chat with each other. Our environment is a laboratory for research and for experiments with users interacting with agents in multimodal ways, referring to visualized information and making use of knowledge possessed by domain agents, but also by agents that represent other visitors of this environment. We discuss standards that are under development for designing such environments. Our environment models a local theatre in our hometown. We discuss our attempts to let this environment evolve into a theatre community where we do not only have goal-directed visitors buying tickets, but also visitors that that are not yet sure whether they want to buy or just want information or visitors who just want to look around, talk with others, etc. It is shown that we need a multi-user and multi-agent environment to realize our goals and that we need to have a unifying framework in order to be able to introduce and maintain different agents and user avatars with different abilities, including intellectual, interaction and animation abilities
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