A novel entropy-based graph signature from the average mixing matrix

Lu Bai, Luca Rossi, Lixin Cui*, Edwin R. Hancock

*Corresponding author for this work

Research output: Chapter in Book/Published conference outputConference publication


In this paper, we propose a novel entropic signature for graphs, where we probe the graphs by means of continuous-time quantum walks. More precisely, we characterise the structure of a graph through its average mixing matrix. The average mixing matrix is a doubly-stochastic matrix that encapsulates the time-averaged behaviour of a continuous-time quantum walk on the graph, i.e., the ij-th element of the average mixing matrix represents the time-averaged transition probability of a continuous-time quantum walk from the vertex vi to the vertex vj. With this matrix to hand, we can associate a probability distribution with each vertex of the graph. We define a novel entropic signature by concatenating the average Shannon entropy of these probability distributions with their Jensen-Shannon divergence. We show that this new entropic measure can encaspulate the rich structural information of the graphs, thus allowing to discriminate between different structures. We explore the proposed entropic measure on several graph datasets abstracted from bioinformatics databases and we compare it with alternative entropic signatures in the literature. The experimental results demonstrate the effectiveness and efficiency of our method.

Original languageEnglish
Title of host publication2016 23rd International Conference on Pattern Recognition, ICPR
Number of pages6
ISBN (Electronic)978-1-5090-4847-2
Publication statusPublished - 13 Apr 2017
Event23rd International Conference on Pattern Recognition: ICPR 2016 - Cancun, Mexico
Duration: 4 Dec 20168 Dec 2016


Conference23rd International Conference on Pattern Recognition

Bibliographical note

-© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.


Dive into the research topics of 'A novel entropy-based graph signature from the average mixing matrix'. Together they form a unique fingerprint.

Cite this