5954 search results - page 26 / 1191 » Querying Bi-level Information |
CIKM
2001
Springer
14 years 6 days ago
2001
Springer
Query expansion has been shown effective for both single database retrieval and for distributed information retrieval where complete collection information is available. One might...
SIGMOD
2011
ACM
12 years 10 months ago
2011
ACM
We study the problem of context-sensitive ranking for document retrieval, where a context is defined as a sub-collection of documents, and is specified by queries provided by do...
ECIR
2010
Springer
13 years 9 months ago
2010
Springer
We analyse the statistical behavior of query-associated quantities in query-logs, namely, the sum and mean of IDF of query terms, otherwise known as query specificity and query mea...
AIRS
2006
Springer
13 years 11 months ago
2006
Springer
We report on a study that was undertaken to better identify users' goals behind web search queries by using click through data. Based on user logs which contain over 80 millio...
SIGMOD
2002
ACM
14 years 7 months ago
2002
ACM
Relational query optimizers have traditionally relied upon table cardinalities when estimating the cost of the query plans they consider. While this approach has been and continue...