Dealing with Pure New User Cold-Start Problem in Recommendation System Based on Linked Open Data and Social Network Features

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Items</td><td class="align_center">I1</td><td class="align_center">I2</td><td class="align_center">I3</td><td class="align_center">I4</td><td class="align_center">I5</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">U1</td><td class="align_center">r11</td><td class="align_center">r12</td><td class="align_center">—</td><td class="align_center">r14</td><td class="align_center">r15</td></tr><tr><td class="align_left">U2</td><td class="align_center">r21</td><td class="align_center">—</td><td class="align_center">r23</td><td class="align_center">r24</td><td class="align_center">r25</td></tr><tr><td class="align_left">U3</td><td class="align_center">r31</td><td class="align_center">r32</td><td class="align_center">—</td><td class="align_center">r34</td><td class="align_center">r35</td></tr><tr><td class="align_left">U4</td><td class="align_center">—</td><td class="align_center">r42</td><td class="align_center">r43</td><td class="align_center">r44</td><td class="align_center">r45</td></tr><tr><td class="align_left">U5</td><td class="align_center">r51</td><td class="align_center">r52</td><td class="align_center">r53</td><td class="align_center">—</td><td class="align_center">—</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>User-Item Rating Matrix (UIM).</div>

Mobile Information Systems

tab2

Table 2

Table 2: Dealing with Pure New User Cold-Start Problem in Recommendation System Based on Linked Open Data and Social Network Features 