2298 search results - page 189 / 460 » Querying spatial patterns |
142
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WWW
2008
ACM
16 years 4 months ago
2008
ACM
This paper presents PrivacyGrid - a framework for supporting anonymous location-based queries in mobile information delivery systems. The PrivacyGrid framework offers three unique...
177
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RIAO
2000
15 years 5 months ago
2000
The presence of XML in many recent hypermedia management tools and methods (W3I3, SMIL, etc.) shows better than ever that both structural and textual criteria will continue to pla...
169
Voted
TREC
2007
15 years 5 months ago
2007
A Question Answering (QA) system aims to return exact answers to natural language questions. While today information retrieval techniques are quite successful at locating within l...
120
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GIS
1995
ACM
15 years 7 months ago
1995
ACM
Polygonal objects are characterized by the following well-known parameters: number of vertices, area, perimeter and so on. These parameters describe the data sets that are used in...
248
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ICDE
2005
IEEE
16 years 5 months ago
2005
IEEE
We present ViteX, an XPath processing system on XML streams with polynomial time complexity. ViteX uses a polynomial-space data structure to encode an exponential number of patter...