500 search results - page 43 / 100 » Document frequency and term specificity |
WWW
2005
ACM
14 years 11 months ago
2005
ACM
We present an approach in which the semantics of an XML language is defined by means of a transformation from an XML document model (an XML schema) to an application specific mode...
ICML
1997
IEEE
14 years 3 months ago
1997
IEEE
This paper is a comparative study of feature selection methods in statistical learning of text categorization. The focus is on aggressive dimensionality reduction. Five methods we...
SIGIR
2008
ACM
13 years 11 months ago
2008
ACM
The approach of using passage-level evidence for document retrieval has shown mixed results when it is applied to a variety of test beds with different characteristics. One main r...
SIGIR
1999
ACM
14 years 3 months ago
1999
ACM
This paper presents a means of automatically deriving a hierarchical organization of concepts from a set of documents without use of training data or standard clustering technique...
ADCS
2004
14 years 12 days ago
2004
Relevance profiling is a general process for withindocument retrieval. Given a query, a profile of retrieval status values is computed by sliding a fixed sized window across a doc...