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NIPS
2001
13 years 11 months ago
Hyperbolic Self-Organizing Maps for Semantic Navigation
We introduce a new type of Self-Organizing Map (SOM) to navigate in the Semantic Space of large text collections. We propose a "hyperbolic SOM" (HSOM) based on a regular...
Jörg Ontrup, Helge Ritter
IJCAI
2003
13 years 11 months ago
On the Undecidability of Description and Dynamic Logics with Recursion and Counting
The evolution of Description Logics (DLs) and Propositional Dynamic Logics produced a hierar­ chy of decidable logics with multiple maximal el­ ements. It would be desirable to ...
Piero A. Bonatti
AAAI
1998
13 years 11 months ago
Two Forms of Dependence in Propositional Logic: Controllability and Definability
We investigate two forms of dependence between variables and/or formulas within a propositional knowledge base: controllability (a set of variables X controls a formula , if there...
Jérôme Lang, Pierre Marquis
NAACL
1994
13 years 11 months ago
Pattern Matching in a Linguistically-Motivated Text Understanding System
An ongoing debate in text understanding efforts centers on the use of pattern-matching techniques, which some have characterized as "designed to ignore as much text as possib...
Damaris M. Ayuso
CSE
2009
IEEE
13 years 11 months ago
Representing Small Group Evolution
: Understanding the dynamics of network evolution rests in part on the representation chosen to characterize the evolutionary process. We offer a simple, three-parameter representa...
Whitman Richards, Nicholas C. Wormald