9683 search results - page 1900 / 1937 » Query performance prediction |
SIGIR
2009
ACM
14 years 2 months ago
2009
ACM
Pseudo relevance feedback (PRF), which has been widely applied in IR, aims to derive a distribution from the top n pseudo relevant documents D. However, these documents are often ...
SIGIR
2009
ACM
14 years 2 months ago
2009
ACM
Most retrieval models estimate the relevance of each document to a query and rank the documents accordingly. However, such an approach ignores the uncertainty associated with the ...
ICDM
2008
IEEE
14 years 2 months ago
2008
IEEE
Web Mining Systems exploit the redundancy of data published on the Web to automatically extract information from existing web documents. The first step in the Information Extract...
ACSAC
2007
IEEE
14 years 2 months ago
2007
IEEE
The increasing centralization of networked services places user data at considerable risk. For example, many users store email on remote servers rather than on their local disk. D...
IV
2007
IEEE
14 years 2 months ago
2007
IEEE
Studies show that roughly one-third of searches that are performed on the web require the user to initiate subsequent searches. Bates [1] theorized that with every search the user...