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However, the algorithm development for multi-omics data integration remains a pressing challenge.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Here, we propose a multi-omics data integration algorithm based on random walk with restart (RWR) on multiplex network. We call the resulting methodology Random Walk with Restart for multi-dimensional data Fusion (RWRF). RWRF uses similarity network of samples as the basis for integration. It constructs the similarity network for each data type and then connects corresponding samples of multiple similarity networks to create a multiplex sample network. By applying RWR on the multiplex network, RWRF uses stationary probability distribution to fuse similarity networks. We applied RWRF to The Cancer Genome Atlas (TCGA) data to identify subtypes in different cancer data sets. Three types of data (mRNA expression, DNA methylation, and microRNA expression data) are integrated and network clustering is conducted. Experiment results show that RWRF performs better than single data type analysis and previous integrative methods.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>RWRF provides powerful support to users to decipher the cancer molecular subtypes, thus may benefit precision treatment of specific patients in clinical practice.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12859-021-04029-3","type":"journal-article","created":{"date-parts":[[2021,2,27]],"date-time":"2021-02-27T11:02:53Z","timestamp":1614423773000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Multi-dimensional data integration algorithm based on random walk with restart"],"prefix":"10.1186","volume":"22","author":[{"given":"Yuqi","family":"Wen","sequence":"first","affiliation":[]},{"given":"Xinyu","family":"Song","sequence":"additional","affiliation":[]},{"given":"Bowei","family":"Yan","sequence":"additional","affiliation":[]},{"given":"Xiaoxi","family":"Yang","sequence":"additional","affiliation":[]},{"given":"Lianlian","family":"Wu","sequence":"additional","affiliation":[]},{"given":"Dongjin","family":"Leng","sequence":"additional","affiliation":[]},{"given":"Song","family":"He","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4304-3479","authenticated-orcid":false,"given":"Xiaochen","family":"Bo","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2021,2,27]]},"reference":[{"issue":"1A","key":"4029_CR1","first-page":"A68","volume":"19","author":"K Tomczak","year":"2015","unstructured":"Tomczak K, Czerwi\u0144ska P, Wiznerowicz M. 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