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AO
2005
75views more  AO 2005»
15 years 5 months ago
A multi-layered ontology for comparing relationship semantics in conceptual models of databases
Relationships are an integral part of the design of a database. Comparing and integrating relationships from heterogeneous databases requires that the relationships be mapped to ea...
Sandeep Purao, Veda C. Storey
ICML
1998
IEEE
16 years 6 months ago
The Case against Accuracy Estimation for Comparing Induction Algorithms
We analyze critically the use of classi cation accuracy to compare classi ers on natural data sets, providing a thorough investigation using ROC analysis, standard machine learnin...
Foster J. Provost, Tom Fawcett, Ron Kohavi
SIGMOD
2004
ACM
140views Database» more  SIGMOD 2004»
16 years 5 months ago
Automatic Direct and Indirect Schema Mapping: Experiences and Lessons Learned
A schema mapping produces a semantic correspondence between two schemas. Automating schema mapping is challenging. The existence of 1:n (or n:1) and n:m mapping cardinalities make...
David W. Embley, Li Xu, Yihong Ding
CORR
2010
Springer
138views Education» more  CORR 2010»
15 years 5 months ago
ICT in Universities of the Western Himalayan Region of India II: A Comparative SWOT Analysis
This study presents a comparative SWOT analysis to comprehend the pattern of development of ICT within six universities of western Himalayan region of India. With the objective of...
Dhirendra Sharma, Vikram Singh
SG
2010
Springer
15 years 3 months ago
The Effects of Finger-Walking in Place (FWIP) for Spatial Knowledge Acquisition in Virtual Environments
Abstract. Virtual environments (VEs) can be used to study issues related to human navigation, such as spatial knowledge acquisition. In our prior work, we introduced a new locomoti...
Ji-Sun Kim, Denis Gracanin, Kresimir Matkovic, Fra...