5954 search results - page 215 / 1191 » Querying Bi-level Information |
187
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CIKM
2008
Springer
15 years 8 months ago
2008
Springer
We propose a novel probabilistic method based on the Hidden Markov Model (HMM) to learn the structure of a Latent Variable Model (LVM) for query language modeling. In the proposed...
165
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JUCS
2008
15 years 6 months ago
2008
: Over the last decade, due to the rapid developments in information technology (IT), a new breed of information systems has appeared such as geographic information systems that in...
222
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RR
2010
Springer
15 years 5 months ago
2010
Springer
Role-based access control is a standard mechanism in information systems. Based on the role a user has, certain information is kept from the user even if requested. For ontologies ...
332
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GIS
2006
ACM
16 years 7 months ago
2006
ACM
Remotely sensed data, in particular satellite imagery, play many important roles in environmental applications and models. In particular applications that study (rapid) changes in...
177
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KDD
2004
ACM
16 years 7 months ago
2004
ACM
In this paper we provide a fast, data-driven solution to the failing query problem: given a query that returns an empty answer, how can one relax the query's constraints so t...