10412 search results - page 1997 / 2083 » The efficiency of algorithms - misconceptions |
193
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SIGMOD
2009
ACM
16 years 2 months ago
2009
ACM
Reachability queries on large directed graphs have attracted much attention recently. The existing work either uses spanning structures, such as chains or trees, to compress the c...
227
Voted
SIGMOD
2009
ACM
16 years 2 months ago
2009
ACM
Ontology matching, aiming to obtain semantic correspondences between two ontologies, has played a key role in data exchange, data integration and metadata management. Among numero...
224
Voted
SIGMOD
2008
ACM
16 years 2 months ago
2008
ACM
In some applications such as filling in a customer information form on the web, some missing values may not be explicitly represented as such, but instead appear as potentially va...
188
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SIGMOD
2008
ACM
16 years 2 months ago
2008
ACM
A primary challenge to large-scale data integration is creating semantic equivalences between elements from different data sources that correspond to the same real-world entity or...
213
Voted
SIGMOD
2008
ACM
16 years 2 months ago
2008
ACM
Supporting ranking queries in database systems has been a popular research topic recently. However, there is a lack of study on supporting ranking queries in data warehouses where...