Criticism Mining:


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Criticism Mining

• Exploring Book Movie and Music Reviews Using
  Text Mining Techniques
• Xiao Hu J. Stephen Downie and M. Cameron Jones
• Graduate School of Library and Information
  Science
• University of Ilinois at Urbana-Champaign

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Emerging Domain

• Many networked resources now provide critical
  consumer-generated reviews of humanities
  materials
• Public and private
• blogs
• mailing lists
• wikis
• Online stores
• Review websites

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Emerging Opportunity

• Many of these reviews are quite detailed
  covering not only the reviewers personal
  opinions but also important background and
  contextual information about the works under
  discussion.

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Emerging Need

• Humanities scholars should be given the ability
  to easily gather up and then analytically examine
  these reviews to determine for example how
  users are impacted and influenced by humanities
  materials.

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Addressing the Need

• The authors have conducted a series of very
  promising large-scale experiments that bring to
  bear powerful text mining techniques to the
  problem of criticism analysis.

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A Possible Solution to the Need

• Our experimental results concerning the
  application of the Naïve Bayes text mining
  technique to the criticism analysis domain
  indicate that criticism mining is not only
  feasible but also worthy of further exploration
  and refinement.

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Experimental Goals

• Our principal experimental goal was to build and
  then evaluate a prototype criticism mining system
  that could automatically predict the
• genre of the work being reviewed
• quality rating assigned to the reviewed item
• difference between book reviews and movie
  reviews especially for items in the same genre
• difference between fiction and non-fiction book
  reviews

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Data Sets

• Source epinions.com
• Book reviews 1800
• Movie reviews 1650
• Music review 1800
• Each review contains a quality rating using 1-5
  stars
• Each review is associated with a genre

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An example of a review from epinions.com
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Genre Experiments
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Quality Rating Experiments

• Three levels of granularity
• Fine 1 2 3 4 and 5 stars
• Medium 12 vs. 45 stars
• Large 1 vs. 5 stars

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Book vs. Movie Experiments

• Two levels of interest
• All genres
• Pairing by similar genres

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Fiction vs. Non-Fiction Experiments
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Conclusions (1)

• Consumer-generated reviews of humanities
  materials represent a valuable research resource
  for humanities scholars.
• Our series of experiments on the automated
  classification of reviews verify that important
  information about the materials being reviewed
  can be found using text mining techniques.

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Conclusions (2)

• All our experiments were highly successful in
  terms of both classification accuracy and the
  logical placement of confusion in the confusion
  matrices.
• Thus the development of criticism mining
  techniques based upon the relatively simple Naïve
  Bayes model has been shown to be simultaneously
  viable and robust.
• This finding promises to make the ever-growing
  consumer-generated review resources useful to
  humanities scholars.

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Future Work (1)

• A broadening of our understanding by exploring
  the application of text mining techniques beyond
  the Naïve Bayes model
• decision trees
• neural nets
• support vector machines
• We will also work towards the development of a
  system to automatically mine arbitrary bodies of
  critical review text such as blogs mailing
  lists and wikis.

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Future Work (2)

• We also hope to construct content and
  ethnographic analyses to help answer the why
  questions that pertain to the results.
• Final comment
• In the end it is all about the why questions!