Abstract of FKI-229-99

Document-Name:  NOT LONGER FTP-AVAILABLE. PUBLISHED AS:
                A. Musto, K. Stein, K. Schill, A. Eisenkolb, W. Brauer: 
                Qualitative Motion Representation in Egocentric and 
                Allocentric Frames of Reference. In C. Freksa & D.M. Mark 
                (eds.): Spatial information theory - Cognitive and 
                computational foundations of geographic information 
                science (COSIT'99). Lecture Notes in Computer Science 
                No. 1661, Springer, Berlin, 1999.
Title:		Qualitative Motion Representation in Egocentric and 
		Allocentric Frame of Reference
Authors:	Alexandra Musto, Klaus Stein, Kerstin Schill, Andreas
  		Eisenkolb, and Wilfried Brauer
Revision-Date:	1999/02/01
Category:	Technical Report (Forschungsberichte Künstliche Intelligenz)
Abstract:	In qualitative motion representation, frames of reference 
		play an important role as well in measuring of the motion 
		data as in representation and application of algorithms. 
		This paper discusses motion representation in egocentric 
		and allocentric frames of reference and begins with some 
		general considerations on motion representation through 
		qualitative distances and directions that apply to both 
		technical and biological systems. An approach that
		involves numeric generalization of a numerically represented 
		motion track and subsequent transformation in a qualitative 
		representation has advantages for technical systems, though. 
		Last, algorithms for generalizing qualitatively represented 
		motion tracks in an egocentric and allocentric frame of 
		reference are presented.
Keywords:	spatial reasoning, qualitative reasoning, 
		knowledge representation, cognitive modeling
Size:		15 pages
Language:	English
ISSN:		0941-6358
Copyright:	The ``Forschungsberichte Künstliche Intelligenz''
		series includes primarily preliminary publications,
		specialized partial results, and supplementary
		material. In the interest of a subsequent final
		publication these reports should not be copied. All
		rights and the responsability for the contents of the
		report are with the authors, who would appreciate
		critical comments.

Gerhard Weiss