Sciweavers

120 search results - page 3 / 24
» Efficient and Effective Query Answering in a PDMS with SUNRI...
Sort
View
PVLDB
2010
252views more  PVLDB 2010»
13 years 2 months ago
Efficient and Effective Similarity Search over Probabilistic Data based on Earth Mover's Distance
Probabilistic data is coming as a new deluge along with the technical advances on geographical tracking, multimedia processing, sensor network and RFID. While similarity search is...
Jia Xu, Zhenjie Zhang, Anthony K. H. Tung, Ge Yu
CIKM
2009
Springer
14 years 2 months ago
Effective and efficient structured retrieval
Search engines that support structured documents typically support structure created by the author (e.g., title, section), and may also support structure added by an annotation pr...
Le Zhao, Jamie Callan
CORR
2010
Springer
153views Education» more  CORR 2010»
13 years 7 months ago
The Complexity of Causality and Responsibility for Query Answers and non-Answers
An answer to a query has a well-defined lineage expression (alternatively called how-provenance) that explains how the answer was derived. Recent work has also shown how to comput...
Alexandra Meliou, Wolfgang Gatterbauer, Katherine ...
ICDE
2010
IEEE
178views Database» more  ICDE 2010»
13 years 5 months ago
The Hybrid-Layer Index: A synergic approach to answering top-k queries in arbitrary subspaces
In this paper, we propose the Hybrid-Layer Index (simply, the HL-index) that is designed to answer top-k queries efficiently when the queries are expressed on any arbitrary subset ...
Jun-Seok Heo, Junghoo Cho, Kyu-Young Whang
DOLAP
2009
ACM
14 years 2 months ago
View usability and safety for the answering of top-k queries via materialized views
In this paper, we investigate the problem of answering top-k queries via materialized views. We provide theoretical guarantees for the adequacy of a view to answer a top-k query, ...
Eftychia Baikousi, Panos Vassiliadis