500 search results - page 31 / 100 » Document frequency and term specificity |
PODS
2005
ACM
14 years 11 months ago
2005
ACM
Some promising recent schemes for XML access control employ encryption for implementing security policies on published data, avoiding data duplication. In this paper we study one ...
SIGDOC
2009
ACM
14 years 5 months ago
2009
ACM
Users of help systems often complain that they do not find them useful; while they still use help at least occasionally, they resort to other problem-solving strategies. In this p...
CIKM
2008
Springer
14 years 28 days ago
2008
Springer
We introduce the Ranked Feature Fusion framework for information retrieval system design. Typical information retrieval formalisms such as the vector space model, the bestmatch mo...
ACL
2010
13 years 9 months ago
2010
Most sentiment analysis approaches use as baseline a support vector machines (SVM) classifier with binary unigram weights. In this paper, we explore whether more sophisticated fea...
SIGIR
2011
ACM
13 years 1 months ago
2011
ACM
Inverted indexes are the most fundamental and widely used data structures in information retrieval. For each unique word occurring in a document collection, the inverted index sto...