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Blog Summarization

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Find relevant information before perform summarization. Look for subjective information and discard ... Negated subject. Preceded word, word functionality ... – PowerPoint PPT presentation

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Title: Blog Summarization


1
Blog Summarization
  • Wang Xuan
  • 10/01/08

2
Blog Summarization
System
100-word Summary
Query on opinion
3
Human Summary
  • Find relevant information before perform
    summarization.
  • Look for subjective information and discard
    information that expresses facts.
  • Group relevant information
  • for / against
  • general / specific

4
General framework
Topic Relevance Module
Polarity Classification Module
Opinion Identification Module
Summary
Query on opinion
5
Sentiment Analysis
  • Use Prior Polarity Lexicons
  • Opinion Term
  • Rare Term (sooo good)
  • IU Term (I and You collocation)
  • Adjective-Verb

6
Contextual Polarity
  • Phrases in which word appears may be different
    from the words prior polarity
  • No one thinks that it is good
  • Not only good but amazing
  • Environment trust vs. He won peoples trust
  • Little threat

7
Sentiment Analysis
  • Recognize Contextual Polarity
  • Classify expression as neutral or polar
  • Word itself (prior polarity)
  • Preceded word, word functionality
  • Sentence features
  • Document topic
  • Determine the polarity of the polar expression
  • (Positive, Negative, Both, Neutral)
  • Negated subject
  • Preceded word, word functionality
  • Polarity influencers (little threat, lack of
    understanding)

8
Future work
  • Contextual Polarity Classification
  • Summarization
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