SIGIR
2011
ACM
12 years 7 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
13 years 3 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
13 years 6 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
13 years 9 months ago
1994
ACM
The 2
SPIRE
2007
Springer
13 years 11 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
13 years 11 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...