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WWW
2005
ACM
14 years 10 months ago
An enhanced model for searching in semantic portals
Semantic Portal is the next generation of web portals that are powered by Semantic Web technologies for improved information sharing and exchange for a community of users. Current...
Lei Zhang, Yong Yu, Jian Zhou, Chenxi Lin, Yin Yan...
CHI
2008
ACM
14 years 9 months ago
What to do when search fails: finding information by association
Sometimes people cannot remember the names or locations of things on their computer, but they can remember what other things are associated with them. We created Feldspar, the fir...
Duen Horng Chau, Brad A. Myers, Andrew Faulring
STOC
2007
ACM
98views Algorithms» more  STOC 2007»
14 years 9 months ago
Negative weights make adversaries stronger
The quantum adversary method is one of the most successful techniques for proving lower bounds on quantum query complexity. It gives optimal lower bounds for many problems, has ap...
Peter Høyer, Troy Lee, Robert Spalek
VLDB
2007
ACM
116views Database» more  VLDB 2007»
14 years 9 months ago
On the Correctness Criteria of Fine-Grained Access Control in Relational Databases
Databases are increasingly being used to store information covered by heterogeneous policies, which require support for access control with great flexibility. This has led to incr...
Qihua Wang, Ting Yu, Ninghui Li, Jorge Lobo, Elisa...
SIGMOD
2007
ACM
112views Database» more  SIGMOD 2007»
14 years 9 months ago
A random walk approach to sampling hidden databases
A large part of the data on the World Wide Web is hidden behind form-like interfaces. These interfaces interact with a hidden backend database to provide answers to user queries. ...
Arjun Dasgupta, Gautam Das, Heikki Mannila