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EDBT
2004
ACM
145views Database» more  EDBT 2004»
16 years 4 months ago
CUBE File: A File Structure for Hierarchically Clustered OLAP Cubes
Abstract. Hierarchical clustering has been proved an effective means for physically organizing large fact tables since it reduces significantly the I/O cost during ad hoc OLAP quer...
Nikos Karayannidis, Timos K. Sellis, Yannis Kouvar...
ISCAS
2008
IEEE
145views Hardware» more  ISCAS 2008»
15 years 11 months ago
Group learning using contrast NMF : Application to functional and structural MRI of schizophrenia
— Non-negative Matrix factorization (NMF) has increasingly been used as a tool in signal processing in the last couple of years. NMF, like independent component analysis (ICA) is...
Vamsi K. Potluru, Vince D. Calhoun
DSN
2007
IEEE
15 years 11 months ago
User Discrimination through Structured Writing on PDAs
This paper explores whether features of structured writing can serve to discriminate users of handheld devices such as Palm PDAs. Biometric authentication would obviate the need t...
Rachel R. M. Roberts, Roy A. Maxion, Kevin S. Kill...
EDBTW
2004
Springer
15 years 10 months ago
Clustering Structured Web Sources: A Schema-Based, Model-Differentiation Approach
Abstract. The Web has been rapidly “deepened” with the prevalence of databases online. On this “deep Web,” numerous sources are structured, providing schema-rich data– Th...
Bin He, Tao Tao, Kevin Chen-Chuan Chang
MKM
2004
Springer
15 years 10 months ago
A Graph-Based Approach Towards Discerning Inherent Structures in a Digital Library of Formal Mathematics
As the amount of online formal mathematical content grows, for example through active efforts such as the Mathweb [21], MOWGLI [4], Formal Digital Library, or FDL [1], and others, ...
Lori Lorigo, Jon M. Kleinberg, Richard Eaton, Robe...