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» Hierarchies for semantic classes
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SIGIR
2009
ACM
15 years 4 months ago
Web-derived resources for web information retrieval: from conceptual hierarchies to attribute hierarchies
A weakly-supervised extraction method identifies concepts within conceptual hierarchies, at the appropriate level of specificity (e.g., Bank vs. Institution), to which attribute...
Marius Pasca, Enrique Alfonseca
JSYML
2011
45views more  JSYML 2011»
14 years 4 months ago
On the jump classes of noncuppable enumeration degrees
We prove that for every Σ0 2 enumeration degree b there exists a noncuppable Σ0 2 degree a > 0e such that b ≤e a and a ≤e b . This allows us to deduce, from results on the...
Charles M. Harris
76
Voted
IJCAI
1989
14 years 10 months ago
On the Declarative Semantics of Inheritance Networks
Usually, semantics of inheritance networks is specified indirectly through a translation into one of the standard logical formalisms. Since such translation involves an algorithmi...
Krishnaprasad Thirunarayan, Michael Kifer, David S...
65
Voted
CORR
2008
Springer
88views Education» more  CORR 2008»
14 years 9 months ago
Efficient Algorithms for Membership in Boolean Hierarchies of Regular Languages
Abstract. The purpose of this paper is to provide efficient algorithms that decide membership for classes of several Boolean hierarchies for which efficiency (or even decidability)...
Christian Glasser, Heinz Schmitz, Victor L. Seliva...
ECAI
2004
Springer
15 years 3 months ago
Identifying Relational Concept Lexicalisations by Using General Linguistic Knowledge
Abstract. This paper analyses how general-purpose semantic hierarchies could be helpful in the construction of one-to-many mappings between the coarse-grained relational concepts a...
Maria Teresa Pazienza, Marco Pennacchiotti, Fabio ...