Download
pro con and affinity tagging of product reviews n.
Skip this Video
Loading SlideShow in 5 Seconds..
Pro, Con, and Affinity Tagging of Product Reviews PowerPoint Presentation
Download Presentation
Pro, Con, and Affinity Tagging of Product Reviews

Pro, Con, and Affinity Tagging of Product Reviews

106 Vues Download Presentation
Télécharger la présentation

Pro, Con, and Affinity Tagging of Product Reviews

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Pro, Con, and Affinity Tagging of Product Reviews Todd Sullivan

  2. The Task • Given a product review, what are the pros, cons, and affinities chosen by the reviewer?

  3. Example

  4. Another Example

  5. Systems • Bag of words Naïve Bayes (baseline) • Maximum Entropy Classifier • Combinatorial Tag Optimization • Preprocessing Methods • Lowercasing, removing punctuation, stop words list, vocabulary restriction, etc. • Maximum Entropy Feature Selection • Combinatorial Tag OptimizationWeights Selection

  6. Results on the Pro “Compact”

  7. Overall Maxent Results

  8. Multi-Tag OptimizationImprovement on Affinities

  9. Future Work • Human study of tagging performance • More advanced textual features using dependency trees / phrase structure trees • Better sentence boundary detection and tokenization (Balie did not work too well) • Focus on feature development for cons and affinities (spent all of our time on pros)