664 search results - page 20 / 133 » Adaptive Selectivity Estimation Using Query Feedback |
VLDB
2002
ACM
13 years 7 months ago
2002
ACM
Many valuable text databases on the web have non-crawlable contents that are "hidden" behind search interfaces. Metasearchers are helpful tools for searching over many s...
ICMCS
2000
IEEE
13 years 11 months ago
2000
IEEE
Relevance feedback [1] has been a powerful tool for interactive Content-Based Image Retrieval (CBIR). During the retrieval process, the user selects the most relevant images and p...
PODS
2000
ACM
13 years 11 months ago
2000
ACM
An estimation algorithm for a query is a probabilistic algorithm that computes an approximation for the size (number of tuples) of the query. One class of estimation algorithms us...
ICMCS
2000
IEEE
13 years 11 months ago
2000
IEEE
In this paper, a non-linear relevance feedback mechanism is proposed for increasing the performance and the reliability of content-based retrieval systems. In particular, the huma...
WWW
2003
ACM
14 years 8 months ago
2003
ACM
In contrast to traditional document retrieval, a web page as a whole is not a good information unit to search because it often contains multiple topics and a lot of irrelevant inf...