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AI
2001
Springer
14 years 2 months ago
Concept-Learning in the Presence of Between-Class and Within-Class Imbalances
In a concept learning problem, imbalances in the distribution of the data can occur either between the two classes or within a single class. Yet, although both types of imbalances ...
Nathalie Japkowicz
SIGECOM
2000
ACM
121views ECommerce» more  SIGECOM 2000»
14 years 2 months ago
Immunizing online reputation reporting systems against unfair ratings and discriminatory behavior
Reputation reporting systems have emerged as an important risk management mechanism in online trading communities. However, the predictive value of these systems can be compromise...
Chrysanthos Dellarocas
ICDCS
1996
IEEE
14 years 2 months ago
An Evaluation of the Amoeba Group Communication System
The Amoeba group communication system has two unique aspects: (1) it uses a sequencer-based protocol with negative acknowledgements for achieving a total order on all group messag...
M. Frans Kaashoek, Andrew S. Tanenbaum
DOOD
1997
Springer
134views Database» more  DOOD 1997»
14 years 2 months ago
Well-Founded Semantics for Deductive Object-Oriented Database Languages
Abstract. We present a well-founded semantics for deductive objectoriented database (dood) languages by applying the alternating- xpoint characterization of the well-founded model ...
Wolfgang May, Bertram Ludäscher, Georg Lausen
LFCS
1992
Springer
14 years 2 months ago
Denotations for Classical Proofs - Preliminary Results
This paper addresses the problem of extending the formulae-as-types principle to classical logic. More precisely, we introduce a typed lambda-calculus (-LK ) whose inhabited types...
Philippe de Groote