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DIS
1998
Springer
14 years 26 days ago
Uniform Characterizations of Polynomial-Query Learnabilities
We consider the exact learning in the query model. We deal with all types of queries introduced by Angluin: membership, equivalence, superset, subset, disjointness and exhaustivene...
Yosuke Hayashi, Satoshi Matsumoto, Ayumi Shinohara...
ICDE
2008
IEEE
129views Database» more  ICDE 2008»
14 years 10 months ago
Hierarchical Indexing Approach to Support XPath Queries
We study new hierarchical indexing approach to process XPATH queries. Here, a hierarchical index consists of index entries that are pairs of queries and their (full/partial) answer...
Jeffrey Xu Yu, Kam-Fai Wong, M. Tamer Özsu, N...
ICDE
2010
IEEE
263views Database» more  ICDE 2010»
14 years 8 months ago
Managing Uncertainty of XML Schema Matching
Abstract-- Despite of advances in machine learning technologies, a schema matching result between two database schemas (e.g., those derived from COMA++) is likely to be imprecise. ...
Reynold Cheng, Jian Gong, David W. Cheung
AAAI
2007
13 years 11 months ago
GRIN: A Graph Based RDF Index
RDF (“Resource Description Framework”) is now a widely used World Wide Web Consortium standard. However, methods to index large volumes of RDF data are still in their infancy....
Octavian Udrea, Andrea Pugliese, V. S. Subrahmania...
SIGMOD
2004
ACM
149views Database» more  SIGMOD 2004»
14 years 8 months ago
Incremental Maintenance of XML Structural Indexes
Increasing popularity of XML in recent years has generated much interest in query processing over graph-structured data. To support efficient evaluation of path expressions, many ...
Ke Yi, Hao He, Ioana Stanoi, Jun Yang 0001