887 search results - page 149 / 178 » A Time for Choosing |
ICDT
2009
ACM
14 years 10 months ago
2009
ACM
We continue the study of approximating the number of distinct elements in a data stream of length n to within a (1? ) factor. It is known that if the stream may consist of arbitra...
WWW
2009
ACM
14 years 10 months ago
2009
ACM
Ad auctions in sponsored search support"broad match"that allows an advertiser to target a large number of queries while bidding only on a limited number. While giving mo...
WWW
2004
ACM
14 years 10 months ago
2004
ACM
For the manual semantic markup of documents to become widespread, users must be able to express annotations that conform to ontologies (or schemas) that have shared meaning. Howev...
CHI
2009
ACM
14 years 10 months ago
2009
ACM
The canon is a composition pattern with a long history and many forms. The concept of the canon has also been applied to experimental film making and on Japanese television. We de...
KDD
2002
ACM
14 years 10 months ago
2002
ACM
In this paper, we present a novel algorithm OpportuneProject for mining complete set of frequent item sets by projecting databases to grow a frequent item set tree. Our algorithm ...