2298 search results - page 44 / 460 » Querying spatial patterns |
122
Voted
SEMWEB
2005
Springer
15 years 9 months ago
2005
Springer
Semantic query optimization (SQO) has been proved to be quite useful in various applications (e.g., data integration, graphical query generators, caching, etc.) and has been extens...
99
Voted
SIGIR
2002
ACM
15 years 3 months ago
2002
ACM
Query ambiguity is a generally recognized problem, particularly in Web environments where queries are commonly only one or two words in length. In this study, we explore one techn...
244
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GIS
2006
ACM
16 years 4 months ago
2006
ACM
The result of a distance join operation on two sets of objects R, S on a spatial network G is a set P of object pairs <p, q>, p R, q S such that the distance of an object ...
104
Voted
SSDBM
2005
IEEE
15 years 9 months ago
2005
IEEE
Similarity-based querying of time series data can be categorized as pattern existence queries and shape match queries. Pattern existence queries find the time series data with ce...
135
Voted
PODS
2004
ACM
16 years 3 months ago
2004
ACM
We study the problem of answering queries over sources with limited access patterns. Given a first-order query Q, the problem is to decide whether there is an equivalent query whi...