| Boutilier,
C., Das, R., Kephart, J.O., Tesauro, G. and Walsh, W.E., Cooperative
Negotiation in Autonomic Systems using Incremental Utility Elicitation,
Uncertainty in AI conference, 2003.
Abstract:
Decentralized resource allocation is a key problem for large-scale
autonomic (or self-managing) computing systems. Motivated by a data
center scenario, this paper explores efficient techniques for resolving
resource conflicts via cooperative negotiation. Rather than computing
in advance the functional dependence of each element’s utility upon
the amount of resource it receives, which could be prohibitively
expensive, each element’s utility is elicited incrementally. Such
incremental utility elicitation strategies require the evaluation
of only a small set of sampled utility function points, yet they
find near-optimal allocations with respect to a minimax regret criterion.
The paper describes preliminary computational experiments that illustrate
the benefit of this approach.
Campbell,
M., Joseph Hoane Jr., A. and Hsu, F., Deep Blue, Artificial Intelligence
134 (1-2), 2002.
Abstract:
This paper describes the Deep Blue system, the chess machine that
defeated then-reigning World Chess Champion Garry Kasparov in 1997,
and gives some of the rationale that went into the design decisions
behind Deep Blue.
Guarino,
Nicola and Chris Welty. 2002. Evaluating Ontological Decisions with
OntoClean. Communications of the ACM. 45(2):61-65. New York:ACM
Press.
Abstract:
This paper describes a methodology for evaluating an ontology using
formal evaluation criteria. More specifically, it proposes a number
of tests for identifying ill-defined subsumption relationships,
and describes the formal basis for why they are wrong.
Kakade,
S., Kearns, M. and Langford, J. Exploration in metric state spaces.
ICML 2003.
Abstract:
This paper describes a provably near-optimal algorithm for reinforcement
learning in Markov decision processes in which there is a natural
metric on the state space that allows the construction of accurate
local models.
Kothari,
R. and Jain, V., Learning from Labeled and Unlabeled Data Using
a Minimal Number of Queries, IEEE Transactions on Neural Networks,
2003.
Abstract:
This paper shows how to learn in situations where there is a very
small amount of labeled data and a large amount of unlabeled data.
Mccarthy,
J., Marvin, M., Sloman, A., Gong, L., Lau, T., Morgenstern, L.,
Mueller, E.T., Riecken, D., Singh, M. and Singh, P. An architecture
of diversity for commonsense reasoning, IBM Systems Journal, vol.
41(3):530-39, 2002.
Abstract:
This paper discusses commonsense reasoning and what makes it difficult
for computers. The paper contends that commonsense reasoning is
too hard a problem to solve using any single artificial intelligence
technique. A multilevel architecture is proposed that consists of
diverse reasoning and representation techniques that collaborate
and reflect in order to allow the best techniques to be used for
the many situations that arise in commonsense reasoning. Story understanding--specifically,
understanding and answering questions about progressively harder
children's texts--is presented as a task for evaluating and scaling
up a commonsense reasoning system.
Mueller,
E.T. Story understanding through multi-representation model construction.
In Graeme Hirst & Sergei Nirenburg (Eds.), Text Meaning: Proceedings
of the HLT-NAACL 2003 Workshop (pp. 46-53). East Stroudsburg, PA:
Association for Computational Linguistics.
Abstract:
In the last few years, a number of advances have occurred in the
field of commonsense reasoning. First, formalisms have been developed
for reasoning about action that are able to deal with the frame
problem. Second, significant axiomatizations of commonsense knowledge
have been developed using these formalisms. Third, efficient methods
for performing commonsense reasoning using satisfiability (SAT)
have been developed. This paper applies these advances to the problem
of deep language understanding. A computer program is presented
that contains multiple representations of commonsense knowledge,
takes a narrative as input, transforms the narrative and representations
of commonsense knowledge into a satisfiability problem, runs a satisfiability
solver, and produces models of the narrative as output. The narrative,
models, and representations are expressed in the language of Shanahan's
event calculus.
Rish,
I., Brodie, M, and Ma, S., Accuracy versus efficiency in probabilistic
diagnosis, Proceedings of National Conference on Artificial Intelligence.
2002. p. 560-6, July 2002.
Abstract:
This paper studies the accuracy/efficiency trade-off in probabilistic
diagnosis formulated as finding the most-likely explanation (MPE)
in a Bayesian network. This work is motivated by a practical problem
of efficient real-time fault diagnosis in computer networks using
test transactions, or probes, sent through the network. The key
efficiency issues include both the cost of probing (e.g., the number
of probes), and the computational complexity of diagnosis, while
the diagnostic accuracy is crucial for maintaining high levels of
network performance. Herein, the paper derives a lower bound on
the diagnostic accuracy that provides necessary conditions for the
number of probes needed to achieve an asymptotically error-free
diagnosis as the network size increases, given prior fault probabilities
and a certain level of noise in probe outcomes. The paper also explores
accuracy/efficiency trade-offs for very simple and efficient local
approximation techniques, based on variable-elimination (the mini-bucket
scheme).
Walsh,
W.E., Das, R., Tesauro, G. and Kephart, J.O., Analyzing Complex
Strategic Interactions in Multi-Agent Systems, Game Theory & Decision
Theory Workshop, AAAI, 2002.
Abstract:
The paper develops a model for analyzing complex games with repeated
interactions, for which a full game-theoretic analysis is intractable.
This approach treats exogenously specified, heuristic strategies,
rather than the atomic actions, as primitive, and computes a heuristic-payoff
table specifying the expected payoffs of the joint heuristic strategy
space. The paper analyzes two games based on (i) automated dynamic
pricing and (ii) continuous double auction. For each game, the paper
computes Nash equilibria of previously published heuristic strategies.
To determine the most plausible equilibria, the replicator dynamics
of a large population playing the strategies are studied. In order
to account for errors in estimation of payoffs or improvements in
strategies, the paper also analyzes the dynamics and equilibria
based on perturbed payoffs.
Ye,
Y. and Tu, Y. Dynamics of coalition formation in combinatorial markets.
IJCAI 2003.
Abstract:
This paper studies the dynamics of agent mediated combinatorial
trading at the macroscopic level. The combinatorial marketplace
consists of a retailer who wishes to sell bundles of items, and
a large number of agents with different purchasing goals. These
agents dynamically form coalitions to exploit the benefits of grouping
based on their complementary needs. a novel physics based dynamic
equation is proposeed to capture the essence of the movements of
agents among different sized coalitions. Simulation experiments
are performed to study the global behavior of the agents and the
effectiveness of the agent mediated combinatorial trading.
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