3625 search results - page 569 / 725 » On choosing |
284
click to vote
ICDT
2009
ACM
16 years 8 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...
170
click to vote
WWW
2009
ACM
16 years 7 months ago
2009
ACM
E-commerce is growing at an exponential rate. In the last decade, there has been an explosion of online commercial activity enabled by World Wide Web (WWW). These days, many consu...
234
click to vote
WWW
2009
ACM
16 years 7 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...
224
click to vote
WWW
2008
ACM
16 years 7 months ago
2008
ACM
In this paper we present a new document representation model based on implicit user feedback obtained from search engine queries. The main objective of this model is to achieve be...
177
click to vote
WWW
2008
ACM
16 years 7 months ago
2008
ACM
We study in this paper the Web forum crawling problem, which is a very fundamental step in many Web applications, such as search engine and Web data mining. As a typical user-crea...