264 search results - page 18 / 53 » First order LUB approximations: characterization and algorit... |
AAAI
1992
15 years 27 days ago
1992
models require the identi cation of abstractions and approximations that are well suited to the task at hand. In this paper we analyze the problem of automatically selecting adequ...
110
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TALG
2010
14 years 6 months ago
2010
We study a generalization of the k-median problem with respect to an arbitrary dissimilarity measure D. Given a finite set P of size n, our goal is to find a set C of size k such t...
109
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ACM
1995
15 years 3 months ago
1995
We study properties of rough sets, that is, approximations to sets of records in a database or, more formally, to subsets of the universe of an information system. A rough set is a...
ALT
2006
Springer
15 years 8 months ago
2006
Springer
The present paper mainly studies the expected teaching time of memoryless randomized learners without feedback. First, a characterization of optimal randomized learners is provided...
203
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SIGMOD
2009
ACM
15 years 12 months ago
2009
ACM
Named entity recognition aims at extracting named entities from unstructured text. A recent trend of named entity recognition is finding approximate matches in the text with respe...