Evidence map›Paper›PMID 29560823›Full record

ArticleBMC systems biology2018

Improving the measurement of semantic similarity by combining gene ontology and co-functional network: a random walk based approach.

Jiajie Peng, Xuanshuo Zhang, Weiwei Hui, Junya Lu, Qianqian Li, Shuhui Liu, Xuequn Shang

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In one paragraph

Article in BMC systems biology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

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28citing papers in PubMed
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28 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Jiajie PengSchool of Computer Science, Northwestern Polytechnical University, Xi'an, China. jiajiepeng@nwpu.edu.cn.
Xuanshuo ZhangSchool of Computer Science, Northwestern Polytechnical University, Xi'an, China.
Weiwei HuiSchool of Computer Science, Northwestern Polytechnical University, Xi'an, China.
Junya LuSchool of Computer Science, Northwestern Polytechnical University, Xi'an, China.
Qianqian LiSchool of Computer Science, Northwestern Polytechnical University, Xi'an, China.
Shuhui LiuSchool of Computer Science, Northwestern Polytechnical University, Xi'an, China.
Xuequn ShangSchool of Computer Science, Northwestern Polytechnical University, Xi'an, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGene Ontology (GO) is one of the most popular bioinformatics resources. In the past decade, Gene Ontology-based gene semantic similarity has been effectively used to model gene-to-gene interactions in multiple research areas. However, most existing semantic similarity approaches rely only on GO annotations and structure, or incorporate only local interactions in the co-functional network. This may lead to inaccurate GO-based similarity resulting from the incomplete GO topology structure and gene annotations.

resultsWe present NETSIM2, a new network-based method that allows researchers to measure GO-based gene functional similarities by considering the global structure of the co-functional network with a random walk with restart (RWR)-based method, and by selecting the significant term pairs to decrease the noise information. Based on the EC number (Enzyme Commission)-based groups of yeast and Arabidopsis, evaluation test shows that NETSIM2 can enhance the accuracy of Gene Ontology-based gene functional similarity.

conclusionsUsing NETSIM2 as an example, we found that the accuracy of semantic similarities can be significantly improved after effectively incorporating the global gene-to-gene interactions in the co-functional network, especially on the species that gene annotations in GO are far from complete.

Indexed as

Gene OntologyGene Regulatory NetworksSemanticsComputational BiologyMolecular Sequence AnnotationStochastic ProcessesGene OntologyRandom walk with restartSemantic similarity

Identifiers

PMID29560823
PMCPMC5861498

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