[Retracted] Mind Map Construction for English Grammar Teaching Based on Knowledge Map

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Data category</td><td class="align_center">Before cleaning</td><td class="align_center">After cleaning</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Paper</td><td class="align_center">3297</td><td class="align_center">3208</td></tr><tr><td class="align_left">Patent</td><td class="align_center">1189</td><td class="align_center">1150</td></tr><tr><td class="align_left">Teacher</td><td class="align_center">87</td><td class="align_center">89</td></tr><tr><td class="align_left">Institutions</td><td class="align_center">35</td><td class="align_center">36</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Statistics of various data volumes before and after cleaning.</div>

Scientific Programming

tab2

Table 2

Table 2: [Retracted] Mind Map Construction for English Grammar Teaching Based on Knowledge Map 