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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Distributional Similarity (DS)<br />
• Distributional hypothesis (Harris, 1985): Terms occurring in<br />
analogous (lexical or syntactic) contexts tend to be similar<br />
• Contexts shared by Easter <strong>and</strong> Christmas<br />
the date _ is celebrated<br />
| _ is a religious festival<br />
history of the _ festival<br />
…<br />
• Contexts shared by significantly <strong>and</strong> dramatically<br />
is _ improved by<br />
unlikely to _ alter the<br />
can _ increase health risks<br />
…<br />
Exploit<br />
second-order<br />
Co-occurrences
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