Claire%20Cardie%20(CS IS),%20Cynthia%20Farina%20(Law), - PowerPoint PPT Presentation

Title: Claire%20Cardie%20(CS IS),%20Cynthia%20Farina%20(Law),


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An eRulemaking Corpus Identifying Substantive
Issues in Public Comments

• Claire Cardie (CSIS), Cynthia Farina (Law),
• Matt Rawding (IS), Adil Aijaz (CS)
• CeRI (Cornell eRulemaking Initiative)
• Cornell University

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Plan for the Talk

• Background
• E-rulemaking
• CeRI FTA Grant Circulars Corpus
• Text Categorization Experiments

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Rulemaking?E-Rulemaking

• Rulemaking one of the principal methods of
  making regulatory policy in the US
• 4000 per year
• notice and comment rulemaking formal public
  participation phase
• 10 500,000 comments per rule
• comment length 1 sentence 10s of pages
• agency legally bound to respond to all
  substantive issues
• E-rulemaking e-notice and e-comment

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Current Agency Practice
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Goals of Our Current Work

• Determine the degree to which automatic issue
  categorization can facilitate analysis of
  comments by identifying and categorizing
  relevant issues.
• Framed as a text categorization task
• Given a comment set, the automated system
  should determine, for each sentence in each
  comment, which of a group of pre-defined issue
  categories it raises, if any.
• Builds on the work of Kwon Hovy (2007) and
  Kwon et al. (2006)

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Plan for the Talk

• Background
• CeRI FTA Grant Circulars Corpus
• Difficulties
• Interannotator agreement results
• Text Categorization Experiments

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FTA Grant Circulars Rule

• Topic guidance to public and private
  transportation providers applying for federal aid
  for elderly, disabled and low income persons
• 267 comments
• shortest 1 sentence
• longest 1420 sentences
• 11,094 sentences total

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FTA Grant Circulars Issue Set
17 top-level issues
39 fine-grained issues
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Kwon Hovy (2007)
vs.
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Difficulties for Text Categorization

• Large, hierarchical issue set

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FTA Grant Circulars Issue Set
17 top-level issues
39 fine-grained issues
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Difficulties for Text Categorization

• Large, hierarchical issue set
• NONE category
• Skewed distribution across issues
• 87 of the sentences are from 6 categories
• 13 of the sentences are from 33 categories
• Potentially multiple issues per sentence.
• Even long sentences contain few words.
• Variation in comment quality, scope, vocabulary
  and form.

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The Annotators
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Interannotator Agreement

• 146 comments used for the study
• 6 annotators
• 2.66 annotators per comment
• 41.5 sentences per comment
• Overlap agreement measure

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Category-by-Category IAG Results
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Plan for the Talk

• Background
• E-rulemaking
• Public comment analysis
• CeRI FTA Grant Circulars Corpus
• Difficulties
• Interannotator agreement results
• Text Categorization Experiments

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Standard Text Categorization Algorithms

• Fine-grained issues (39)
• Coarse-grained issues (17)

Standard (flat) text categorization methods Hierarchical text categorization methods
SVMs (0/1 loss) Maxent Naïve Bayes cascaded classification Dumais Chen (2000)
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Cascaded Categorization
Some
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Cascaded Categorization
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Cascaded Categorization
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Gold Standard Data Set

• Simulate agency comment analysis process
• One analyst / rule
• Six data sets
• One data set / annotator

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SVM Results with tf.idf Features
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Best-Performing Fine-Grained Issues (Annotator 1)
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Progress and Plans

• Promising initial results rule-specific issue
  categorization of public comments
• Annotate comments for more rules
• Expert (rulewriter) vs. law student annotation
• Integrate automatic text categorization into
  annotation interface
• Active learning (Purpura, Cardie Simons, dg.o
  2008)
• Collaboration with HCI colleagues in InfoSci

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The End

• For more on
• the hierarchical text categorization method
• Cardie et al. (dg.o 2008)
• a new structural learning approach for
  hierarchical classification
• Purpura et al. (in preparation)
• active learning methods for hierarchical text
  categorization
• Purpura, Cardie Simons (dg.o 2008)

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Minimizing the Costliest Errors
Underinclusive errors are the most costly
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The Sophisticated Commenter
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At the other extreme

• I am disabled and take medications and fear
  flying because of the new government conditions
  on Air Marshalls to determine if someone looks
  suspicious behaviour but what if passengers take
  psychiatric medications and have side effects
  such as execisive sweating or shallow breathing
  due to medications? I hope my concern be
  properly addressed where Airlines can also
  increase the seating on plans to provide
  additional information of medicaitons and items
  which can accomodate passengers when flying
  instead of assume and act without knowing of
  there history of medications. I guess disabled
  people are being forced to give up privacy just
  to avoid any problems from Air Marshalls.Jon