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ICDT
1995
ACM
13 years 11 months ago
1995
ACM
We investigate and compare two forms of recursion on sets for querying nested collections. The rst one is called sri and it corresponds to sequential processing of data. The second...
KDD
2009
ACM
14 years 8 months ago
2009
ACM
Search logs, which contain rich and up-to-date information about users' needs and preferences, have become a critical data source for search engines. Recently, more and more ...
ALT
2007
Springer
14 years 4 months ago
2007
Springer
As some cognitive research suggests, in the process of learning languages, in addition to overt explicit negative evidence, a child often receives covert explicit evidence in form...
DEXA
2004
Springer
14 years 1 months ago
2004
Springer
Abstract. In relational database management systems indexes are used to accelerate specific queries. The selection of indexes is an important task when tuning a database which is ...
AGENTS
2001
Springer
14 years 6 days ago
2001
Springer
Shopping on the Internet has become a convenient way of purchasing commodities of choice. A key contribution of agent technology will be to develop personal agents that can assist...