SIGIR
2011
ACM
13 years 5 months ago
2011
ACM
We reveal that the Okapi BM25 retrieval function tends to overly penalize very long documents. To address this problem, we present a simple yet effective extension of BM25, namel...
JASIS
2010
14 years 1 months ago
2010
Common measures of term importance in information retrieval (IR) rely on counts of term frequency; rare terms receive higher weight in document ranking than common terms receive. ...
ECIR
2010
Springer
14 years 4 months ago
2010
Springer
In this paper, we complement the term frequency, which is used in many bag-of-words based information retrieval models, with information about the semantic relatedness of query and...
SIGIR
1994
ACM
14 years 7 months ago
1994
ACM
The 2
SPIRE
2007
Springer
14 years 9 months ago
2007
Springer
Abstract. Weighting models use lexical statistics, such as term frequencies, to derive term weights, which are used to estimate the relevance of a document to a query. Apart from t...
ISDA
2008
IEEE
14 years 9 months ago
2008
IEEE
In this paper, we propose an algorithm and data structure for computing the term contributed frequency (tcf) for all N-grams in a text corpus. Although term frequency is one of th...