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124
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PVLDB
2010
98views more  PVLDB 2010»
15 years 5 months ago
Dremel: Interactive Analysis of Web-Scale Datasets
Dremel is a scalable, interactive ad-hoc query system for analysis of read-only nested data. By combining multi-level execution trees and columnar data layout, it is capable of ru...
Sergey Melnik, Andrey Gubarev, Jing Jing Long, Geo...
311
Voted
ICDT
2009
ACM
149views Database» more  ICDT 2009»
16 years 7 months ago
Query languages for data exchange: beyond unions of conjunctive queries
The class of unions of conjunctive queries (UCQ) has been shown to be particularly well-behaved for data exchange; its certain answers can be computed in polynomial time (in terms...
Juan Reutter, Marcelo Arenas, Pablo Barceló
CIKM
2005
Springer
16 years 19 days ago
Maximal termsets as a query structuring mechanism
Search engines process queries conjunctively to restrict the size of the answer set. Further, it is not rare to observe a mismatch between the vocabulary used in the text of Web p...
Bruno Pôssas, Nivio Ziviani, Berthier A. Rib...
168
Voted
COLING
2010
15 years 2 months ago
The Role of Queries in Ranking Labeled Instances Extracted from Text
A weakly supervised method uses anonymized search queries to induce a ranking among class labels extracted from unstructured text for various instances. The accuracy of the extrac...
Marius Pasca
179
Voted
MASCOTS
2003
15 years 8 months ago
A Packet-Level Simulation Study of Optimal Web Proxy Cache Placement
The Web proxy cache placement problem is often formulated as a classical optimization problem: place N proxies within an internetwork so as to minimize the average user response t...
Gwen Houtzager, Carey L. Williamson