Mining Overlapping Protein Complexes in PPI Network Based on Granular Computation in Quotient Space

  • Jie Zhao
  • Xiujuan LeiEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10954)


Proteins complexes play a critical role in many biological processes. The existing protein complex detection algorithms are mostly cannot reflect the overlapping protein complexes. In this paper, a novel algorithm is proposed to detect overlapping protein complexes based on granular computation in quotient space. Firstly, problems are expressed by quotient space and different quotient space embodies the quotient set of different granular. Then the method estimates the relationship between particles to make up for the inadequacy of data in combination with the PPI data and Gene Ontology data, deals with the network based on quotient space theory. Graining the network to construct the quotient space and merging the particles layer by layer. The final protein complexes is obtained after purification. The experimental results on Saccharomyces cerevisiae and Homo sapiens turned out that the proposed method could exploit protein complexes more accurately and efficiently.


Protein complexes Gene Ontology Quotient space Granular computation Clustering 



This paper is supported by the National Natural Science Foundation of China (61672334, 61502290, 61401263) and the Fundamental Research Funds for the Central Universities, Shaanxi Normal University (GK201804006).


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© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Computer ScienceShaanxi Normal UniversityXi’anChina

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