23590 search results - page 4504 / 4718 » Algorithm Performance Contest |
155
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SIGMOD
2002
ACM
16 years 5 months ago
2002
ACM
Dwarf is a highly compressed structure for computing, storing, and querying data cubes. Dwarf identifies prefix and suffix structural redundancies and factors them out by coalesci...
158
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SIGMOD
2002
ACM
16 years 5 months ago
2002
ACM
Clustering is the process of grouping a set of objects into classes of similar objects. Although definitions of similarity vary from one clustering model to another, in most of th...
131
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PODS
2007
ACM
16 years 5 months ago
2007
ACM
Schema mappings are high-level specifications that describe the relationship between two database schemas. Two operators on schema mappings, namely the composition operator and th...
130
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EDBT
2002
ACM
16 years 5 months ago
2002
ACM
Web logs collected by proxy servers, referred to as proxy logs or proxy traces, contain information about Web document accesses by many users against many Web sites. This "man...
148
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EDBT
2006
ACM
16 years 5 months ago
2006
ACM
Current methods for selectivity estimation fall into two broad categories, synopsis-based and sampling-based. Synopsis-based methods, such as histograms, incur minimal overhead at ...