13,253 research outputs found
Correlated Equilibria in Competitive Staff Selection Problem
This paper deals with an extension of the concept of correlated strategies to
Markov stopping games. The Nash equilibrium approach to solving nonzero-sum
stopping games may give multiple solutions. An arbitrator can suggest to each
player the decision to be applied at each stage based on a joint distribution
over the players' decisions. This is a form of equilibrium selection. Examples
of correlated equilibria in nonzero-sum games related to the staff selection
competition in the case of two departments are given. Utilitarian, egalitarian,
republican and libertarian concepts of correlated equilibria selection are
used.Comment: The idea of this paper was presented at Game Theory and Mathematical
Economics, International Conference in Memory of Jerzy Los(1920 - 1998),
Warsaw, September 200
The DLV System for Knowledge Representation and Reasoning
This paper presents the DLV system, which is widely considered the
state-of-the-art implementation of disjunctive logic programming, and addresses
several aspects. As for problem solving, we provide a formal definition of its
kernel language, function-free disjunctive logic programs (also known as
disjunctive datalog), extended by weak constraints, which are a powerful tool
to express optimization problems. We then illustrate the usage of DLV as a tool
for knowledge representation and reasoning, describing a new declarative
programming methodology which allows one to encode complex problems (up to
-complete problems) in a declarative fashion. On the foundational
side, we provide a detailed analysis of the computational complexity of the
language of DLV, and by deriving new complexity results we chart a complete
picture of the complexity of this language and important fragments thereof.
Furthermore, we illustrate the general architecture of the DLV system which
has been influenced by these results. As for applications, we overview
application front-ends which have been developed on top of DLV to solve
specific knowledge representation tasks, and we briefly describe the main
international projects investigating the potential of the system for industrial
exploitation. Finally, we report about thorough experimentation and
benchmarking, which has been carried out to assess the efficiency of the
system. The experimental results confirm the solidity of DLV and highlight its
potential for emerging application areas like knowledge management and
information integration.Comment: 56 pages, 9 figures, 6 table
Concepts of Optimality and Their Uses
Lecture to the memory of Alfred Nobel, December 11, 1975allocation of resources;
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