Title
A Similarity Measure for Cyclic Unary Regular Languages
Abstract
A cyclic unary regular language is a regular language over a unary alphabet that is represented by a cyclic automaton. We propose a similarity measure for cyclic unary regular languages by modifying the Jaccard similarity coefficient and the Sørensen coefficient to measure the level of overlap between such languages. This measure computes the proportion of strings that are shared by two or more cyclic unary regular languages and is an upper bound of the Jaccard coefficient and the Sørensen coefficient. By using such similarity measure, we define a dissimilarity measure for cyclic unary regular languages that is a semimetric distance. Moreover, it can be used for the non-cyclic case.
Year
DOI
Venue
2009
10.3233/FI-2009-168
Fundam. Inform.
Keywords
Field
DocType
regular language,jaccard coefficient
Discrete mathematics,Combinatorics,Similarity measure,Unary operation,Upper and lower bounds,Automaton,Jaccard index,Regular language,Mathematics,Alphabet
Journal
Volume
Issue
ISSN
96
1-2
0169-2968
Citations 
PageRank 
References 
3
0.44
9
Authors
3
Name
Order
Citations
PageRank
Jürgen Dassow1530118.27
Gema M. Martín271.73
Francisco J. Vico35512.85