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» The Impact of Query Structure and Query Expansion on Retriev...
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ICIP
2002
IEEE
16 years 6 months ago
Exploiting group structure to improve retrieval accuracy and speed in image databases
Most image retrieval systems perform a linear search over the database to find the closest match to a query. However, databases usually exhibit a natural grouping structure into c...
Nuno Vasconcelos
CIVR
2006
Springer
15 years 8 months ago
Query by Semantic Example
A combination of query-by-visual-example (QBVE) and semantic retrieval (SR), denoted as query-by-semantic-example (QBSE), is proposed. Images are labeled with respect to a vocabula...
Nikhil Rasiwasia, Nuno Vasconcelos, Pedro J. Moren...
SIGMOD
2009
ACM
155views Database» more  SIGMOD 2009»
16 years 4 months ago
Efficient top-k algorithms for fuzzy search in string collections
An approximate search query on a collection of strings finds those strings in the collection that are similar to a given query string, where similarity is defined using a given si...
Rares Vernica, Chen Li
FOCS
2009
IEEE
15 years 8 months ago
Space-Efficient Framework for Top-k String Retrieval Problems
Given a set D = {d1, d2, ..., dD} of D strings of total length n, our task is to report the "most relevant" strings for a given query pattern P. This involves somewhat mo...
Wing-Kai Hon, Rahul Shah, Jeffrey Scott Vitter
CIKM
2005
Springer
15 years 10 months ago
Static score bucketing in inverted indexes
Maintaining strict static score order of inverted lists is a heuristic used by search engines to improve the quality of query results when the entire inverted lists cannot be proc...
Chavdar Botev, Nadav Eiron, Marcus Fontoura, Ning ...