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This dispatch is generally formulated with nonsmooth and nonconvex cost function due to valve-point effects and various constraints, where the conventional methods are inapplicable. An improved social spider optimization algorithm, namely, ISSO, is proposed in this paper to solve the ED problem with valve-point effects. That is, dynamic updating mechanism of the subpopulations, Gaussian mating radius, and multimating strategy are introduced into the ISSO. These mechanisms facilitate a compromise between the global exploration and local exploitation of the search process. Numerical experiments are conducted on benchmark functions and different scale generation units commonly considered in the literature to validate the feasibility of the proposed ISSO. Computational results are analyzed in terms of solution quality by the statistical method, which shows the superiority of the ISSO algorithm in comparison with the state-of-the-art algorithms.<\/jats:p>","DOI":"10.1155\/2020\/2865929","type":"journal-article","created":{"date-parts":[[2020,10,21]],"date-time":"2020-10-21T02:35:09Z","timestamp":1603247709000},"page":"1-13","source":"Crossref","is-referenced-by-count":5,"title":["A Modified Social Spider Optimization for Economic Dispatch with Valve-Point Effects"],"prefix":"10.1155","volume":"2020","author":[{"given":"Wenqiang","family":"Yang","sequence":"first","affiliation":[{"name":"Postdoctoral Research Base, Henan Institute of Science and Technology, Xinxiang 453003, Henan, China"},{"name":"Postdoctoral Station, Henan University of Science and Technology, Luoyang 471000, Henan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tingli","family":"Cheng","sequence":"additional","affiliation":[{"name":"Hefei University of Technology, Hefei 230009, Anhui, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuanjun","family":"Guo","sequence":"additional","affiliation":[{"name":"Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8580-534X","authenticated-orcid":true,"given":"Zhile","family":"Yang","sequence":"additional","affiliation":[{"name":"Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9845-999X","authenticated-orcid":true,"given":"Wei","family":"Feng","sequence":"additional","affiliation":[{"name":"Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1109\/tevc.2002.806788"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1002\/cplx.21829"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.1016\/j.enconman.2020.112498"},{"key":"4","doi-asserted-by":"publisher","DOI":"10.1007\/s11432-018-9730-4"},{"key":"5","doi-asserted-by":"publisher","DOI":"10.1093\/imaman\/4.3.261"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.1109\/59.871715"},{"key":"7","doi-asserted-by":"publisher","DOI":"10.1109\/60.222703"},{"key":"8","doi-asserted-by":"publisher","DOI":"10.1109\/59.667345"},{"key":"9","doi-asserted-by":"publisher","DOI":"10.1109\/tcyb.2019.2931877"},{"key":"10","doi-asserted-by":"publisher","DOI":"10.1109\/TIE.2020.3016257"},{"key":"11","doi-asserted-by":"publisher","DOI":"10.1109\/tmech.2020.2971541"},{"key":"12","doi-asserted-by":"publisher","DOI":"10.1109\/tie.2019.2897545"},{"key":"13","doi-asserted-by":"publisher","DOI":"10.1016\/j.apenergy.2017.07.007"},{"key":"14","doi-asserted-by":"publisher","DOI":"10.1109\/59.260861"},{"key":"15","doi-asserted-by":"publisher","DOI":"10.1016\/j.epsr.2003.12.017"},{"key":"16","doi-asserted-by":"publisher","DOI":"10.3390\/en5093655"},{"key":"17","doi-asserted-by":"publisher","DOI":"10.1002\/cplx.21689"},{"key":"18","doi-asserted-by":"publisher","DOI":"10.1002\/cplx.21619"},{"key":"19","doi-asserted-by":"publisher","DOI":"10.1016\/j.energy.2018.12.165"},{"key":"20","doi-asserted-by":"publisher","DOI":"10.1016\/j.energy.2018.11.034"},{"key":"21","doi-asserted-by":"publisher","DOI":"10.1007\/s00521-016-2335-3"},{"issue":"4","key":"22","first-page":"761","article-title":"Parallel bat algorithm applied to the economic load dispatch problem","volume":"17","author":"C. 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