Intersection graph algorithms:

An intersection graph for a set of sets

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Bibliographic Details
Main Author: Dietz, Paul F. (Author)
Format: Book
Language:English
Published: Ithaca, NY 1984
Series:Cornell University <Ithaca, NY> / Dep. of Computer Science: Technical report 628.
Subjects:
Summary:An intersection graph for a set of sets
I examine another class of intersection graphs, the class of directed path graphs: intersection graphs of sets of paths in a directed tree. This class properly contains the class of interval graphs, and is properly contained by the class of chordal graphs. I give a linear time algorithm for recognizing directed path graphs and for constructing intersection representations, and a polynomial time algorithm for deciding directed path graph isomorphism
Both algorithms use a data structure called a partial path tree, which is a kind of skeletal representation of the clique hypergraph of a directed path graph. I present linear time algorithms for finding partial path trees with specific roots and for finding partial path trees with arbitrary roots. I prove that partial path trees with identical roots are identical. Using this fact I develop a polynomial time algorithm for directed path graph isomorphism
Item Description:Zugl.: Ithaca, NY, Univ., Diss.
Physical Description:VIII, 135 S. Ill.

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