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Because the video resources are dispersedly cached in local buffer of mobile devices of video users, the management of local video resources of video users in edge networks (e.g., caching and removing of local videos) causes dynamic variation of video distribution in networks. The real-time adjustment of local resources of users in terms of the influence levels (e.g., promotion and recession) of video sharing performance is significant for the continual distribution optimization. In this paper, we propose a novel Social-aware Edge Caching Strategy of Video Resources in 5G Ultra-Dense Network (SECS). SECS designs an estimation method of interest domain of users, which employs the Spectral Clustering to generate initial video clusters and makes use of the Fuzzy C-Means (FCM) to refine the initial video clusters. A user clustering method is proposed, which enables the users with common and similar interests to be clustered into the same groups by estimating similarity levels of interest domain between users. SECS designs a performance-aware video caching strategy, which enables the users intelligently implement management (caching and removing) of local video resources in terms of influence for the intragroup sharing performance. Extensive tests show how SECS achieves much better performance results in comparison with the state-of-the-art solutions.<\/jats:p>","DOI":"10.1155\/2021\/6625629","type":"journal-article","created":{"date-parts":[[2021,4,3]],"date-time":"2021-04-03T00:20:08Z","timestamp":1617409208000},"page":"1-14","source":"Crossref","is-referenced-by-count":2,"title":["Social-Aware Edge Caching Strategy of Video Resources in 5G Ultra-Dense Network"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6568-6934","authenticated-orcid":true,"given":"Shijie","family":"Jia","sequence":"first","affiliation":[{"name":"Academy of Information Technology, Luoyang Normal University, Luoyang 471934, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7049-7548","authenticated-orcid":true,"given":"Zhen","family":"Zhou","sequence":"additional","affiliation":[{"name":"Academy of Information Technology, Luoyang Normal University, Luoyang 471934, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7436-8778","authenticated-orcid":true,"given":"WeiLing","family":"Li","sequence":"additional","affiliation":[{"name":"Academy of Information Technology, Luoyang Normal University, Luoyang 471934, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7359-6592","authenticated-orcid":true,"given":"Youzhong","family":"Ma","sequence":"additional","affiliation":[{"name":"Academy of Information Technology, Luoyang Normal University, Luoyang 471934, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7455-5960","authenticated-orcid":true,"given":"Ruiling","family":"Zhang","sequence":"additional","affiliation":[{"name":"Academy of Information Technology, Luoyang Normal University, Luoyang 471934, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6237-4364","authenticated-orcid":true,"given":"Tianyin","family":"Wang","sequence":"additional","affiliation":[{"name":"Academy of Mathematical Science, Luoyang Normal University, Luoyang 471934, China"},{"name":"Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1109\/tcsvt.2017.2768542"},{"key":"2","doi-asserted-by":"crossref","first-page":"505","DOI":"10.1016\/j.future.2017.07.030","article-title":"Smart perception and autonomic optimization: a novel bio-inspired hybrid routing protocol for MANETs","volume":"81","author":"M. 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