5692 search results - page 198 / 1139 » Challenges and Unsolved Problems |
127
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EACL
2003
ACL Anthology
15 years 5 months ago
2003
ACL Anthology
One of the major challenges in TRECstyle question-answering (QA) is to overcome the mismatch in the lexical representations in the query space and document space. This is particul...
131
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MSV
2004
15 years 5 months ago
2004
- We present a model describing the electrical behavior of the heart tissue. Previous research in this field have studied this problem using PDEs (Partial Differential Equations) a...
114
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NIPS
2004
15 years 5 months ago
2004
We present an algorithm to overcome the local maxima problem in estimating the parameters of mixture models. It combines existing approaches from both EM and a robust fitting algo...
125
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NIPS
2004
15 years 5 months ago
2004
We consider the semi-supervised learning problem, where a decision rule is to be learned from labeled and unlabeled data. In this framework, we motivate minimum entropy regulariza...
120
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WSC
2001
15 years 5 months ago
2001
Parameters of statistical distributions that are input to simulations are typically not known with certainty. For existing systems, or variations on existing systems, they are oft...