641 search results - page 24 / 129 » Studying Query Expansion Effectiveness |
AICS
2009
13 years 5 months ago
2009
Document length normalisation is known to be a difficult problem in IR, as tuning is often needed to overcome the collection dependence problem known to affect many normalisation s...
WEBI
2010
Springer
13 years 5 months ago
2010
Springer
A query burst is a period of heightened interest of users on a topic which yields a higher frequency of the search queries related to it. In this paper we examine the behavior of s...
TREC
2004
13 years 9 months ago
2004
This paper describes the experiments conducted in the ad-hoc retrieval task of the Genomic track at TREC 2004. Different query expansion techniques based on the addition of keywor...
ECIR
2008
Springer
13 years 9 months ago
2008
Springer
Passage retrieval and pseudo relevance feedback/query expansion have been reported as two effective means for improving document retrieval in literature. Relevance models, while im...
BNCOD
2009
13 years 8 months ago
2009
We study the expressiveness of a positive fragment of path queries, denoted Path+ , on node-labeled trees documents. The expressiveness of Path+ is studied from two angles. First, ...