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» The Complexity of Query Reliability
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ICEBE
2005
IEEE
168views Business» more  ICEBE 2005»
15 years 5 months ago
Frequency Operators for Condensative Queries over Data Streams
Over a traditional Database Management System (DBMS), the answer to an aggregate query is usually much smaller than the answer to a similar nonaggregate query. Therefore, we call ...
Lisha Ma, Werner Nutt
ICDT
2009
ACM
149views Database» more  ICDT 2009»
16 years 16 days 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
IPTPS
2005
Springer
15 years 5 months ago
Arpeggio: Metadata Searching and Content Sharing with Chord
Arpeggio is a peer-to-peer file-sharing network based on the Chord lookup primitive. Queries for data whose metadata matches a certain criterion are performed efficiently by using...
Austin T. Clements, Dan R. K. Ports, David R. Karg...
IPM
2007
105views more  IPM 2007»
14 years 11 months ago
Parsimonious translation models for information retrieval
In the KL divergence framework, the extended language modeling approach has a critical problem estimating a query model, which is the probabilistic model that encodes user’s inf...
Seung-Hoon Na, In-Su Kang, Jong-Hyeok Lee
85
Voted
PODS
2006
ACM
98views Database» more  PODS 2006»
15 years 12 months ago
Processing queries on tree-structured data efficiently
This is a survey of algorithms, complexity results, and general solution techniques for efficiently processing queries on tree-structured data. I focus on query languages that com...
Christoph Koch