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However, this task is difficult and challenging due to the complexity of image features. This paper proposes a multifeature complementary attention mechanism for image topic representation named CATR. CATR uses scene-level and instance-level object detection methods to obtain the object information on social networks. Here, the image features are divided into focused features and unfocused features. Focused features are used to learn and express semantic information, while unfocused features are used to filter out noise information in focused feature extraction. The attention mechanism is constructed by combining the object features and the features of the image itself, while the image topic representation in social networks is realized by the complementary attention mechanism. Based on the real image data of Sina Weibo and Mir-Flickr 25K, several groups of comparative experiments are constructed to verify the performance of the proposed CATR by leveraging different evaluation measures. The experimental results demonstrate that the proposed CATR obtains an optimal accuracy and significantly outperforms the other comparison methods in image topic representation.<\/jats:p>","DOI":"10.1155\/2021\/5304321","type":"journal-article","created":{"date-parts":[[2021,8,25]],"date-time":"2021-08-25T21:05:07Z","timestamp":1629925507000},"page":"1-9","source":"Crossref","is-referenced-by-count":2,"title":["A Multifeature Complementary Attention Mechanism for Image Topic Representation in Social Networks"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6690-0576","authenticated-orcid":true,"given":"Lei","family":"Shi","sequence":"first","affiliation":[{"name":"Institute of Science and Technology Information of China, Beijing 100038, China"},{"name":"State Key Laboratory of Media Convergence and Communication, Communication University of China, Beijing 100024, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3914-8865","authenticated-orcid":true,"given":"Jia","family":"Luo","sequence":"additional","affiliation":[{"name":"College of Economics and Management, Beijing University of Technology, Beijing 100124, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5424-9632","authenticated-orcid":true,"given":"Gang","family":"Cheng","sequence":"additional","affiliation":[{"name":"School of Computer Science, North China Institute of Science and Technology, Beijing 101601, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5682-0521","authenticated-orcid":true,"given":"Xia","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Opto-Electronic Information Science and Technology, Yantai University, Yantai 264005, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6269-6301","authenticated-orcid":true,"given":"Gang","family":"Xie","sequence":"additional","affiliation":[{"name":"School of Big Data and Computer Science, Guizhou Normal University, Guiyang 550001, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1162\/0899766042321814"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1109\/tmm.2015.2510329"},{"first-page":"1","article-title":"Very deep convolutional networks for large-scale image recognition","author":"K. 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