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» Open Problems with Part-Whole Relations
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DLOG
1996
13 years 6 months ago
Open Problems with Part-Whole Relations
Alessandro Artale, Enrico Franconi, Nicola Guarino
CAISE
2009
Springer
13 years 8 months ago
The Problem of Transitivity of Part-Whole Relations in Conceptual Modeling Revisited
Abstract. Parthood is a relation of fundamental importance in a number of disciplines including cognitive science, linguistics and conceptual modeling. However, one classical probl...
Giancarlo Guizzardi
DLOG
2008
13 years 7 months ago
Essential and Mandatory Part-Whole Relations in Conceptual Data Models
A recurring problem in conceptual modelling and ontology development is the representation of part-whole relations, with a requirement to be able to distinguish between essential a...
Alessandro Artale, C. Maria Keet
EMNLP
2011
12 years 4 months ago
Identifying Relations for Open Information Extraction
Open Information Extraction (IE) is the task of extracting assertions from massive corpora without requiring a pre-specified vocabulary. This paper shows that the output of state...
Anthony Fader, Stephen Soderland, Oren Etzioni
CORR
2010
Springer
163views Education» more  CORR 2010»
13 years 1 months ago
NP-hardness of Deciding Convexity of Quartic Polynomials and Related Problems
We show that unless P=NP, there exists no polynomial time (or even pseudo-polynomial time) algorithm that can decide whether a multivariate polynomial of degree four (or higher ev...
Amir Ali Ahmadi, Alexander Olshevsky, Pablo A. Par...