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The effective service can be obtained through smooth, engaged, and humanoid interactions in which robots react properly to a user\u2019s affective state. This article proposes a novel Automatic Cognitive Empathy Model, ACEM, for humanoid robots to achieve longer and more engaged human-robot interactions (HRI) by considering humans\u2019 emotions and replying to them appropriately. The proposed model continuously detects the affective states of a user based on facial expressions and generates desired, either parallel or reactive, empathic behaviors that are already adapted to the user\u2019s personality. Users\u2019 affective states are detected using a stacked autoencoder network that is trained and tested on the RAVDESS dataset.<\/jats:p>\n          <jats:p>The overall proposed empathic model is verified throughout an experiment, where different emotions are triggered in participants and then empathic behaviors are applied based on proposed hypothesis. The results confirm the effectiveness of the proposed model in terms of related social and friendship concepts that participants perceived during interaction with the robot.<\/jats:p>","DOI":"10.1145\/3341198","type":"journal-article","created":{"date-parts":[[2020,11,9]],"date-time":"2020-11-09T23:29:52Z","timestamp":1604964592000},"page":"1-23","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":30,"title":["An Autonomous Cognitive Empathy Model Responsive to Users\u2019 Facial Emotion Expressions"],"prefix":"10.1145","volume":"10","author":[{"given":"Elahe","family":"Bagheri","sequence":"first","affiliation":[{"name":"Robotics and Multibody Mechanics Research Group, Vrije Universiteit Brussel and Flanders Make, Brussels, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pablo G.","family":"Esteban","sequence":"additional","affiliation":[{"name":"Robotics and Multibody Mechanics Research Group, Vrije Universiteit Brussel and Flanders Make, Brussels, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hoang-Long","family":"Cao","sequence":"additional","affiliation":[{"name":"Robotics and Multibody Mechanics Research Group, Vrije Universiteit Brussel and Flanders Make, Brussels, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Albert De","family":"Beir","sequence":"additional","affiliation":[{"name":"Robotics and Multibody Mechanics Research Group, Vrije Universiteit Brussel and Flanders Make, Brussels, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dirk","family":"Lefeber","sequence":"additional","affiliation":[{"name":"Robotics and Multibody Mechanics Research Group, Vrije Universiteit Brussel and Flanders Make, Brussels, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bram","family":"Vanderborght","sequence":"additional","affiliation":[{"name":"Robotics and Multibody Mechanics Research Group, Vrije Universiteit Brussel and Flanders Make, Brussels, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2020,11,9]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0890-4065(00)80019-5"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.5555\/2447556.2447676"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1109\/ICAR.2013.6766507"},{"key":"e_1_2_1_4_1","first-page":"41","article-title":"Development of artificial empathy. 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