Named Entity Recognition of Hazardous Chemical Risk Information Based on Multihead Self-Attention Mechanism and BERT

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Dataset partition</td><td class="align_center">Count of sentences</td><td class="align_center">Count of words</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Training set</td><td class="align_center">3216</td><td class="align_center">64.8 k</td></tr><tr><td class="align_left">Test set</td><td class="align_center">360</td><td class="align_center">7.2 k</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Composition of hazardous chemical risk information data set.</div>

Wireless Communications and Mobile Computing

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Table 3

Table 3: Named Entity Recognition of Hazardous Chemical Risk Information Based on Multihead Self-Attention Mechanism and BERT 