1192 search results - page 28 / 239 » Subject Index |
GIS
2007
ACM
14 years 11 days ago
2007
ACM
Spatial join is an important yet costly operation in spatial databases. In order to speed up the execution of a spatial join, the input tables are often indexed based on their spa...
SIGMOD
2012
ACM
11 years 11 months ago
2012
ACM
Query substitution is an important problem in information retrieval. Much work focuses on how to find substitutes for any given query. In this paper, we study how to efficiently ...
SIGIR
2006
ACM
14 years 2 months ago
2006
ACM
We consider the following full-text search autocompletion feature. Imagine a user of a search engine typing a query. Then with every letter being typed, we would like an instant d...
WWW
2010
ACM
14 years 3 months ago
2010
ACM
The core task of sponsored search is to retrieve relevant ads for the user’s query. Ads can be retrieved either by exact match, when their bid term is identical to the query, or...
WWW
2008
ACM
14 years 9 months ago
2008
ACM
Due to the rapid growth in the size of the web, web search engines are facing enormous performance challenges. The larger engines in particular have to be able to process tens of ...