959 search results - page 149 / 192 » Supervised semantic indexing |
DEBU
2010
13 years 7 months ago
2010
Consider a universe of tokens, each of which is associated with a weight, and a database consisting of strings that can be represented as subsets of these tokens. Given a query st...
CORR
2007
Springer
13 years 7 months ago
2007
Springer
Using Dirac Notation as a powerful tool, we investigate the three classical Information Retrieval (IR) models and some their extensions. We show that almost all such models can be...
IPM
2006
13 years 7 months ago
2006
Content-oriented retrieval models are based on a document-term matrix, whereas link-oriented retrieval models are based on an adjacent (parentchild) matrix. Term frequency and inv...
SIGIR
2008
ACM
13 years 7 months ago
2008
ACM
Over the years, the notion of concept relatedness has attracted considerable attention. A variety of approaches, based on ontology structure, information content, association, or ...
SIGIR
2008
ACM
13 years 7 months ago
2008
ACM
We introduce the posterior probabilistic clustering (PPC), which provides a rigorous posterior probability interpretation for Nonnegative Matrix Factorization (NMF) and removes th...