2217 search results - page 347 / 444 » Rank-aware Query Optimization |
162
Voted
SODA
2008
ACM
15 years 6 months ago
2008
ACM
We describe an asymptotically optimal data-structure for dynamic point location for horizontal segments. For n line-segments, queries take O(log n) time, updates take O(log n) amo...
173
click to vote
ICMCS
2007
IEEE
15 years 5 months ago
2007
IEEE
We propose a neural network based method for organizing images for content-based image retrieval. We use spectral histogram features, the histograms of filtered images to capture...
164
click to vote
VLDB
2002
ACM
15 years 4 months ago
2002
ACM
Accurate prediction of operator execution time is a prerequisite for database query optimization. Although extensively studied for conventional disk-based DBMSs, cost modeling in ...
165
click to vote
SIGIR
2011
ACM
14 years 7 months ago
2011
ACM
Inverted indexes are the most fundamental and widely used data structures in information retrieval. For each unique word occurring in a document collection, the inverted index sto...
175
click to vote
SIGIR
2011
ACM
14 years 7 months ago
2011
ACM
A key challenge in recommender system research is how to effectively profile new users, a problem generally known as cold-start recommendation. Recently the idea of progressivel...