771 search results - page 83 / 155 » Access Methods and Query Processing Techniques |
TKDE
1998
13 years 9 months ago
1998
—We investigate the problem of retrieving similar shapes from a large database; in particular, we focus on medical tumor shapes (“Find tumors that are similar to a given patter...
VLDB
2002
ACM
13 years 9 months ago
2002
ACM
A continuous nearest neighbor query retrieves the nearest neighbor (NN) of every point on a line segment (e.g., "find all my nearest gas stations during my route from point s...
ADBIS
1997
Springer
14 years 2 months ago
1997
Springer
Today, two classes of indexing methods enjoying wide applicability are the Inverted Index and the Superimposed Coding based Signature File (SC-SF). The former is most efficient i...
SIGMOD
2006
ACM
14 years 10 months ago
2006
ACM
Given a dataset P and a preference function f, a top-k query retrieves the k tuples in P with the highest scores according to f. Even though the problem is well-studied in convent...
CIKM
2007
Springer
14 years 4 months ago
2007
Springer
As one of the most effective query expansion approaches, local feedback is able to automatically discover new query terms and improve retrieval accuracy for different retrieval ...