Opinion Mining Exercises Feiyu Xu DFKI December 14, 2011 12/20/11 - - PowerPoint PPT Presentation

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Opinion Mining Exercises Feiyu Xu DFKI December 14, 2011 12/20/11 Language Technology I 1 Interesting Web sites for OM Epinions http://www.epinions.com/ 12/20/11 Language Technology I 3 Digimind

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12/20/11 Language Technology I 1

Opinion Mining

Exercises

Feiyu Xu

DFKI December 14, 2011

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Interesting Web sites for OM

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Epinions

http://www.epinions.com/

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Digimind

http://www.digimind.com/watch-digimind-in-action

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What the trend: Trend monitoring

http://whatthetrend.com/

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Reviews on “Das Leben der Anderen” @ imdb

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Reviews on “Das Leben der Anderen” @ imdb

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Top 250 movies voted by imdb users

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QUESTIONS

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What are the components of an Opinion

Opinion holder (source)

– The person or organization that holds a specific opinion

n a particular object/target
Opinion target

– A product, person, event, organization, topic or even an

pinion
Opinion content

– A view, attitude, or appraisal on an object from an opinion holder.

Polarity

– Orientations of sentiments expressed in an opinion, e.g., positive, negative or neutral

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What are the subtasks of Opinion Mining

Subjectivity classification
Polarity classification
Opinion extraction

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Please show at least two methods for acquisition

f sentiment word lexicons
conjunctions
semantic orientation via PIM
similar glossary description

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