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SIGIR
2010
ACM
15 years 1 months ago
Query recovery of short user queries: on query expansion with stopwords
User queries to search engines are observed to predominantly contain inflected content words but lack stopwords and capitalization. Thus, they often resemble natural language que...
Johannes Leveling, Gareth J. F. Jones
SYRCODIS
2008
184views Database» more  SYRCODIS 2008»
14 years 11 months ago
Towards Cost-based Query Optimization in Native XML Database Management Systems
In the last few years, XML became a de-facto standard for the exchange of structured and semi-structured data. The database research community took this development into account b...
Andreas M. Weiner, Christian Mathis, Theo Här...
SIGMOD
2001
ACM
146views Database» more  SIGMOD 2001»
15 years 10 months ago
On Supporting Containment Queries in Relational Database Management Systems
Virtually all proposals for querying XML include a class of query we term "containment queries". It is also clear that in the foreseeable future, a substantial amount of...
Chun Zhang, Jeffrey F. Naughton, David J. DeWitt, ...
EUSFLAT
2003
131views Fuzzy Logic» more  EUSFLAT 2003»
14 years 11 months ago
Flexible querying via intuitionistic fuzzy sets
The traditional query languages used in database management systems require precise and unambiguous queries only. Fuzzy querying were introduced to relax this rigidity and allow t...
Przemyslaw Grzegorzewski, Edyta Mrówka
IJWIS
2008
110views more  IJWIS 2008»
14 years 10 months ago
Determined: a system with novel techniques for XML query optimization and evaluation
: Purpose -- Efficient processing of XML queries is critical for XML data management and related applications. Previously proposed techniques are unsatisfactory. This article prese...
Dunren Che, Wen-Chi Hou