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Information recommendation brings the problem of user contextual sensitivity within the mobile environment. For this problem, first, this paper constructs a domain ontology, which is applicable to the contextual semantic reasoning model. Second, based on the \u201c5W\u2009+\u20091H\u201d method, this paper constructs a context pedigree of the mobile environment using a model framework of a domain ontology. The contextual factors of the mobile environment are divided into six categories: the What-object context, the Where-place context, the When-time context, the Who-subject context, the Why-reason context, and the How-effect context. Then, considering the degree of influence of each contextual factor from the mobile context pedigree to the user is different, this paper uses contextual conditional entropy to calculate the contextual weight of each contextual attribute in the recommendation process. Based on this, a contextual semantic reasoning model based on a domain ontology is constructed. Finally, based on the open dataset provided by GroupLens, this paper verifies the validity and efficiency of the model through a simulation experiment.<\/jats:p>","DOI":"10.1155\/2021\/4011190","type":"journal-article","created":{"date-parts":[[2021,9,13]],"date-time":"2021-09-13T23:06:49Z","timestamp":1631574409000},"page":"1-9","source":"Crossref","is-referenced-by-count":4,"title":["Research of Contextual Semantic Reasoning Model Based on Domain Ontology"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7714-633X","authenticated-orcid":true,"given":"Jinhai","family":"Li","sequence":"first","affiliation":[{"name":"College of Computer Science and Technology, Taizhou University, Taizhou 225300, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0555-7655","authenticated-orcid":true,"given":"Yunlei","family":"Ma","sequence":"additional","affiliation":[{"name":"Department of Personnel, Taizhou University, Taizhou 225300, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4495-0617","authenticated-orcid":true,"given":"Xiang","family":"Zhan","sequence":"additional","affiliation":[{"name":"School of Health Policy and Management, Nanjing Medical University, Nanjing 211166, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2774-0511","authenticated-orcid":true,"given":"Jiaming","family":"Pei","sequence":"additional","affiliation":[{"name":"College of Computer Science and Technology, Taizhou University, Taizhou 225300, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"issue":"2","key":"1","first-page":"31","article-title":"Research on anonymous user preference model of university digital library","volume":"32","author":"L. 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