Presence Information Data Format (PIDF) defines a common presence data format for Common Profile for Presence (CPP) compliant presence protocols. This memo defines a PIDF extension to represent SIP User Agent capabilities. Lonnfors & Kiss Standards Track [Page 1] RFC 5196 User Agent Capability Presence Status September 2008 Table of

The extension of our research on analysis of a single agent or agent communities combining advanced methods of visualization with traditional AI techniques is presented in this paper. Even though this approach can be used for arbitrary Multi-Agent System (MAS), it was primarily developed to analyze systems falling into Artificial Life domain. Traditional methods are becoming insufficient as Mul...

In critical infrastructure environments, we argue that both adversaries and operators will utilize agents to manage dynamic attack/defence interactions in future. Agent behavior and, in particular, agent interaction require adequate modelling tools to reason over such situations in distributed environments where the state (malicious or non-malicious) of a channel or process can vary dynamically...

Nowadays a whole bunch of different agent platforms exists that aim to support the software engineer in developing multi-agent systems. Nevertheless most of these platforms concentrate on specific objectives and therefore cannot address all important aspects of agent technology equally well. A broad distinction in this field can be made between middlewareand reasoning-oriented systems. The firs...

A key problem in computer-ba~sed information processing is the lack of tools addressing the atttomation of tasks that, span multiple application programs. We are seeking to fill this void by developing Software agent systems through which end users can delegate such tasks to autonomous software agents. We briefly discuss our approach to several key design issues that arise in building such syst...

Applications such as military training simulations, and electronic commerce can benefit from the flexible and responsive nature of multi-agent systems. These applications have inherent timing constraints on the operations and interactions that the agents might perform. This paper presents a real-time agent architecture in which agents communicate, cooperate, coordinate and negotiate to meet the...

We propose a formal procedure-based agent model for plan recognition as an alternative to the declarative proposition-based agent model. Our formalism, called the Procedural Agent Model (PAM) allows us to describe procedural plans of agents in a concise and abstract way. Plan recognition uses PAM as a library of plan schemas and applies a graph-based pattern-matching algorithm to the observed e...

We propose a formal procedure-based agent model for plan recognition as an alternative to the declarative proposition-based agent model. Our formalism, called the Procedural Agent Model (PAM) allows us to describe procedural plans of agents in a concise and abstract way. Plan recognition uses PAM as a library of plan schemas and applies a graph-based pattern-matching algorithm to the observed e...