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COLING
2002
13 years 7 months ago
"Dialog Navigator": A Question Answering System Based on Large Text Knowledge Base
This paper describes a dialog based QA system, Dialog Navigator, which can answer questions based on large text knowledge base. In real world QA systems, vagueness of questions is...
Yoji Kiyota, Sadao Kurohashi, Fuyuko Kido
DLOG
2001
13 years 9 months ago
Using Lazy Unfolding for the Computation of Least Common Subsumers
For description logics with existential restrictions, the size of the least common subsumer (lcs) of concept descriptions may grow exponentially in the size of the concept descrip...
Anni-Yasmin Turhan, Ralf Molitor
DLOG
2003
13 years 9 months ago
Reasoning about Nominals with FaCT and RACER
We present a translation of looping alternating two-way automata into a comparably inexpressive description logic, which is contained in SHIQ. This enables us to perform the empti...
Jan Hladik
AAAI
2006
13 years 9 months ago
Large Scale Knowledge Base Systems: An Empirical Evaluation Perspective
In this paper, we discuss how our work on evaluating Semantic Web knowledge base systems (KBSs) contributes to address some broader AI problems. First, we show how our approach pr...
Yuanbo Guo, Abir Qasem, Jeff Heflin
KR
2004
Springer
14 years 1 months ago
Updating of a Possibilistic Knowledge Base by Crisp or Fuzzy Transition Rules
In this paper, partial knowledge about the possible transitions which can take place in a dynamical environment is represented by a set of pairs of propositional formulae, with th...
Boris Mailhé, Henri Prade