Semantic Information Extraction: Overview and Basic Techniques
Semantic Information Extraction: Overview and Basic Techniques
Semantic Information Extraction: Overview and Basic Techniques
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<strong>Semantic</strong> hierarchy construction<br />
• Major subtasks<br />
Assign category labels (hypernyms) to terms<br />
• Beijing city, capital…<br />
• Apple company, fruit…<br />
• Red color, symptom, hue…<br />
• Canon EOS 400D digital camera, product…<br />
Assign category labels to semantic classes<br />
• {Beijing, Shanghai, Dalian…} cities, Chinese cities…<br />
• {Microsoft, IBM, Apple…} companies, manufacturers…<br />
Build the hierarchy
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