Interesting Activities Discovery for Moving Objects Based on Collaborative Filtering

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td align="left">Parameter</td><td align="left">Description</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td align="left"><span style="width: 14.475px;"><svg height="15.6875" id="M56" style="vertical-align:-3.3907pt" version="1.1" viewbox="0 0 14.475 15.6875" width="14.475" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td><td align="left">The activity sequence of moving objects</td></tr><tr><td align="left"><span style="width: 45.862499px;"><svg height="15.0875" id="M57" style="vertical-align:-2.3205pt" version="1.1" viewbox="0 0 45.862499 15.0875" width="45.862499" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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" id="x6E"></path></g><g transform="matrix(.017,-0,0,-.017,25.867,12.138)"><path d="M300 -147l-18 -23q-106 71 -159 185.5t-53 254.5v1q0 139 53 252.5t159 186.5l18 -24q-74 -62 -115.5 -173.5t-41.5 -242.5q0 -130 41.5 -242.5t115.5 -174.5z" id="x28"></path></g><g transform="matrix(.017,-0,0,-.017,31.748,12.138)"><path d="M457 488l-30 -3q-17 148 -131 148q-53 0 -84.5 -34.5t-31.5 -82.5q0 -42 25.5 -72t74.5 -62l33 -22q63 -42 95 -85t32 -102q0 -84 -67 -137t-163 -53q-58 0 -113 22t-70 43l-4 152l27 4q4 -32 15 -62.5t31 -59.5t53.5 -47t76.5 -18q56 0 92 35t36 96q0 39 -25 70t-78 68
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</svg></span></td><td align="left">The length of the activities sequence</td></tr><tr><td align="left"><span style="width: 31.362499px;"><svg height="15.0875" id="M58" style="vertical-align:-2.3205pt" version="1.1" viewbox="0 0 31.362499 15.0875" width="31.362499" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg></span></td><td align="left">Time span of activity sequence</td></tr><tr><td align="left">HRset</td><td align="left">The set of hot regions </td></tr><tr><td align="left"><span style="width: 14.475px;"><svg height="17.8375" id="M59" style="vertical-align:-3.3907pt" version="1.1" viewbox="0 0 14.475 17.8375" width="14.475" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.012,-0,0,-.012,8.225,5.387)"><path d="M445 282q0 -64 -27.5 -125t-80.5 -104q-80 -65 -168 -65q-73 0 -109.5 46.5t-36.5 116.5q0 92 46.5 163t119.5 104q66 30 108 30q67 0 107.5 -43.5t40.5 -122.5zM355 280q0 62 -26.5 94.5t-64.5 32.5q-26 0 -44 -8q-39 -18 -74 -82t-35 -163q0 -57 25.5 -90.5t70.5 -33.5
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</svg></span></td><td align="left">The <i>i</i>th activity of object <i>O</i> in the sequence <i>S  </i></td></tr><tr><td align="left">Len(HRset)</td><td align="left">The total count of activities in the HRset</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Mathematical Problems in Engineering

tab1

Table 1

Table 1: Interesting Activities Discovery for Moving Objects Based on Collaborative Filtering 