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» The Expression Problem Revisited
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ISBI
2008
IEEE
16 years 7 months ago
Estimation of cortical multivariate autoregressive models for EEG/MEG using an expectation-maximization algorithm
A new method for estimating multivariate autoregressive (MVAR) models of cortical connectivity from surface EEG or MEG measurements is presented. Conventional approaches to this p...
Bing Leung, Patrick Cheung, Barry D. Van Veen
VLDB
2008
ACM
156views Database» more  VLDB 2008»
16 years 7 months ago
Implementing mapping composition
Mapping composition is a fundamental operation in metadata driven applications. Given a mapping over schemas 1 and 2 and a mapping over schemas 2 and 3, the composition problem is...
Philip A. Bernstein, Todd J. Green, Sergey Melnik,...
SIGMOD
2004
ACM
112views Database» more  SIGMOD 2004»
16 years 7 months ago
Matching Large XML Schemas
Current schema matching approaches still have to improve for very large and complex schemas. Such schemas are increasingly written in the standard language W3C XML schema, especia...
Erhard Rahm, Hong Hai Do, Sabine Massmann
PODS
2004
ACM
86views Database» more  PODS 2004»
16 years 6 months ago
Frontiers of Tractability for Typechecking Simple XML Transformations
Typechecking consists of statically verifying whether the output of an XML transformation is always conform to an output type for documents satisfying a given input type. We focus...
Wim Martens, Frank Neven
PODS
2006
ACM
121views Database» more  PODS 2006»
16 years 6 months ago
On the efficiency of checking perfect privacy
Privacy-preserving query-answering systems answer queries while provably guaranteeing that sensitive information is kept secret. One very attractive notion of privacy is perfect p...
Ashwin Machanavajjhala, Johannes Gehrke