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» Question Answering System for Incomplete and Noisy Data
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PODS
2008
ACM
165views Database» more  PODS 2008»
16 years 2 months ago
Data exchange and schema mappings in open and closed worlds
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
Leonid Libkin, Cristina Sirangelo
SIGIR
2005
ACM
15 years 7 months ago
When will information retrieval be "good enough"?
We describe a user study that examined the relationship between the quality of an Information Retrieval system and the effectiveness of its users in performing a task. The task i...
James Allan, Ben Carterette, Joshua Lewis
DAGSTUHL
2007
15 years 3 months ago
An analytic solution to the alibi query in the bead model for moving object data
Abstract. Moving objects produce trajectories, which are stored in databases by means of finite samples of time-stamped locations. When also speed limitations in these sample poin...
Bart Kuijpers, Walied Othman
ICDM
2010
IEEE
121views Data Mining» more  ICDM 2010»
14 years 12 months ago
Recommending Social Events from Mobile Phone Location Data
A city offers thousands of social events a day, and it is difficult for dwellers to make choices. The combination of mobile phones and recommender systems can change the way one de...
Daniele Quercia, Neal Lathia, Francesco Calabrese,...
SIGMOD
2010
ACM
170views Database» more  SIGMOD 2010»
15 years 6 months ago
Querying data provenance
Many advanced data management operations (e.g., incremental maintenance, trust assessment, debugging schema mappings, keyword search over databases, or query answering in probabil...
Grigoris Karvounarakis, Zachary G. Ives, Val Tanne...