664 search results - page 6 / 133 » Adaptive Selectivity Estimation Using Query Feedback |
SIGIR
2006
ACM
14 years 1 months ago
2006
ACM
Pseudo-relevance feedback has proven to be an effective strategy for improving retrieval accuracy in all retrieval models. However the performance of existing pseudo feedback meth...
EDBT
2010
ACM
14 years 14 days ago
2010
ACM
Most modern RDBMS depend on the query processing optimizer’s cost model to choose the best execution plan for a given query. Since the physical IO (PIO) is a costly operation to...
ERCIMDL
2007
Springer
14 years 1 months ago
2007
Springer
We propose and evaluate a query expansion mechanism that supports searching and browsing in collections of annotated documents. Based on generative language models, our feedback me...
VLDB
1999
ACM
13 years 11 months ago
1999
ACM
This paper aims to improve the accuracy of query result-size estimations in query optimizers by leveraging the dynamic feedback obtained from observations on the executed query wo...
PDCAT
2004
Springer
14 years 21 days ago
2004
Springer
This paper presents a proximity route selection scheme which is adaptive to the underlying network conditions. The proposed scheme repeatedly estimates and updates the total lookup...