Multiobjective Personalized Recommendation Algorithm Using Extreme Point Guided Evolutionary Computation

<table class="fixed-width table-group" id="tab1"><tr><td><table class="table"><colgroup><col style="width:6.11em"/><col style="width:3.50em"/><col style="width:3.49em"/><col style="width:5.74em"/></colgroup><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Data sets</td><td class="align_center">Users</td><td class="align_center">Items</td><td class="align_center">Sparsity</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Movielens 1</td><td class="align_center">200</td><td class="align_center">1682</td><td class="align_center"><span style="width: 58.389636ptpx;"><svg height="11.941334pt" id="M162" style="vertical-align:-0.3499289pt" version="1.1" viewbox="-0.049816 -11.591405 58.389636 11.941334" width="58.389636pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M384 0V27C293 34 287 42 287 114V635C232 613 172 594 109 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635 131 609 100 575L42 494L67 471C94 510 138 565 205 565C277 565 321 517 321 435C321 348 258 270 195 195C146 137 88 81 33 26V0H411C423 44 433 88 446 135L414 144Z"></path></g></svg></span></td></tr><tr><td class="align_left">Movielens 2</td><td class="align_center">258</td><td class="align_center">1682</td><td class="align_center"><span style="width: 58.389651ptpx;"><svg height="11.941334pt" id="M163" style="vertical-align:-0.3499289pt" version="1.1" viewbox="-0.049816 -11.591405 58.389651 11.941334" width="58.389651pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M153 550H386L412 615L406 623H120L82 318C104 327 142 338 184 338C294 338 347 275 347 187C347 112 305 39 221 39C160 39 119 71 97 89C88 97 80 96 71 90C59 80 50 67 49 57C48 45 52 36 66 23C80 9 123 -12 169 -12C221 -11 288 15 342 59C403 109 431 165 431 225C431 308 366 395 238 395C212 395 165 379 127 364L153 550Z"></path></g><g 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<div>Properties of the Movielens data sets. </div>

Complexity

tab1

Table 1

Table 1: Multiobjective Personalized Recommendation Algorithm Using Extreme Point Guided Evolutionary Computation 