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Coupled Bayesian Sets Algorithm for Semi-supervised Learning and Information Extraction Saurabh Verma Baranas Hindu University, India Estevam R. Hruschka Jr. F ederal University of So Carlos, Brazil ECML/PKDD2012

  1. Coupled Bayesian Sets Algorithm for Semi-supervised Learning and Information Extraction Saurabh Verma Baranas Hindu University, India Estevam R. Hruschka Jr. F ederal University of São Carlos, Brazil ECML/PKDD2012 Bristol, UK September, 26th, 2012

  2. http://rtw.ml.cmu.edu ECML/PKDD2012 Bristol, UK September, 26th, 2012

  3. NELL: Never-Ending Language Learner Inputs: l initial ontology l handful of examples of each predicate in ontology l the web l occasional interaction with human trainers The task: l run 24x7, forever • each day: 1. extract more facts from the web to populate the initial ontology 2. learn to read (perform #1) better than yesterday ECML/PKDD2012 Bristol, UK September, 26th, 2012

  4. NELL: Never-Ending Language Learner Goal: • run 24x7, forever • each day: 1. extract more facts from the web to populate given ontology 2. learn to read better than yesterday Today... Running 24 x 7, since January, 2010 Input: • ontology defining ~800 categories and relations • 10-20 seed examples of each • 1 billion web pages (ClueWeb – Jamie Callan) Result: • continuously growing KB with +1,300,000 extracted beliefs ECML/PKDD2012 Bristol, UK September, 26th, 2012

  5. http://rtw.ml.cmu.edu ECML/PKDD2012 Bristol, UK September, 26th, 2012

  6. Bayesian Sets (BS) Ghahramani & Heller; NIPS 2005 Given and , rank the elements of by D D { x } D c ⊂ D = how well they would “ fit into ” a set which includes D c Define a score for each : x D ∈ p ( x D ) c score ( x ) = p ( x ) From Bayes rule, the score can be re-written as: p ( x , D ) score ( x = ) c p ( x ) p ( D ) c

  7. Bayesian Sets (BS) Ghahramani & Heller; NIPS 2005 Intuitively, the score compares the probability that x and D c were generated by the same model with the same unknown parameters θ , to the probability that x and D c came from models with different parameters θ and θ ’ . p ( x , D ) c score ( x = ) p ( x ) p ( D ) c

  8. Bayesian Sets (BS) Ghahramani & Heller; NIPS 2005 Intuitively, the score compares the probability that x and D c were generated by the same model with the same unknown parameters θ , to the probability that x and D c came from models with different parameters θ and θ ’ . p ( x , D ) c score ( x = ) p ( x ) p ( D ) c

  9. Bayesian Sets (BS) Ghahramani & Heller; NIPS 2005 Intuitively, the score compares the probability that x and D c were generated by the same model with the same unknown parameters θ , to the probability that x and D c came from models with different parameters θ and θ ’ . p ( x , D ) c score ( x = ) p ( x ) p ( D ) c

  10. Bayesian Sets (BS) Ghahramani & Heller; NIPS 2005 Intuitively, the score compares the probability that x and D c were generated by the same model with the same unknown parameters θ , to the probability that x and D c came from models with different parameters θ and θ ’ . p ( x , D ) c score ( x = ) p ( x ) p ( D ) c

  11. BS using NELL’s Ontology Initial ontology: Everything Company Person Sport Vegetable ECML/PKDD2012 Bristol, UK September, 26th, 2012

  12. BS using NELL’s Ontology Initial ontology: Everything Company Person Sport City Apple Peter Flach Basketball Bristol Microsoft Bill Clinton Football Pittsburgh Google Jeremy Lin Swimming Rio de Janeiro IBM Adele Tennis Tokyo Yahoo Barak Obama Golf Cape Town ECML/PKDD2012 Bristol, UK September, 26th, 2012

  13. BS using NELL’s Ontology Given a huge web corpus, run BS once Everything Company Person Sport City Apple Peter Flach Basketball Bristol Microsoft Bill Clinton Football Pittsburgh Google Jeremy Lin Swimming Rio de Janeiro IBM Adele Tennis Tokyo Yahoo Barak Obama Golf Cape Town ECML/PKDD2012 Bristol, UK September, 26th, 2012

  14. BS using NELL’s Ontology Given a huge web corpus, run BS once Everything Company Person Sport City Apple Peter Flach Basketball Bristol Microsoft Bill Clinton Football Pittsburgh Google Jeremy Lin Swimming Rio de Janeiro IBM Adele Tennis Tokyo Yahoo Barak Obama Golf Cape Town AT&T Dalai Lama Soccer New York Boeing Freud Volleyball London Brazil Telecom Tom Mitchell Jogging Sao Paulo Texaco Aristotle Marathon Brisbane Facebook Alan Turing Baseball Beijing DELL Alexander Fleming Badminton Cairo … … … … ECML/PKDD2012 Bristol, UK September, 26th, 2012

  15. BS using NELL’s Ontology ECML/PKDD2012 Bristol, UK September, 26th, 2012

  16. BS using NELL’s Ontology ECML/PKDD2012 Bristol, UK September, 26th, 2012

  17. BS using NELL’s Ontology ECML/PKDD2012 Bristol, UK September, 26th, 2012

  18. Iterative BS using NELL’s Ontology Zhang & Liu, 2011 Given a huge web corpus, iteratively run BS Everything Company Person Sport City Apple Peter Flach Basketball Bristol Microsoft Bill Clinton Football Pittsburgh Google Jeremy Lin Swimming Rio de Janeiro IBM Adele Tennis Tokyo Yahoo Barak Obama Golf Cape Town AT&T Dalai Lama Soccer New York Boeing Freud Volleyball London ECML/PKDD2012 Bristol, UK September, 26th, 2012

  19. Iterative BS using NELL’s Ontology Zhang & Liu, 2011 Given a huge web corpus, iteratively run BS Everything Company Person Sport City Apple Peter Flach Basketball Bristol Microsoft Bill Clinton Football Pittsburgh Google Jeremy Lin Swimming Rio de Janeiro IBM Adele Tennis Tokyo Yahoo Barak Obama Golf Cape Town AT&T Dalai Lama Soccer New York Boeing Freud Volleyball London Brazil Telecom Tom Mitchell Jogging Sao Paulo Texaco Aristotle Marathon Brisbane ECML/PKDD2012 Bristol, UK September, 26th, 2012

  20. Iterative BS using NELL’s Ontology Zhang & Liu, 2011 Given a huge web corpus, iteratively run BS Everything Company Person Sport City Apple Peter Flach Basketball Bristol Microsoft Bill Clinton Football Pittsburgh Google Jeremy Lin Swimming Rio de Janeiro IBM Adele Tennis Tokyo Yahoo Barak Obama Golf Cape Town AT&T Dalai Lama Soccer New York Boeing Freud Volleyball London Brazil Telecom Tom Mitchell Jogging Sao Paulo Texaco Aristotle Marathon Brisbane Facebook Alan Turing Baseball Beijing DELL Alexander Fleming Badminton Cairo … … … … ECML/PKDD2012 Bristol, UK September, 26th, 2012

  21. Iterative BS using NELL’s Ontology ECML/PKDD2012 Bristol, UK September, 26th, 2012

  22. Iterative BS using NELL’s Ontology ECML/PKDD2012 Bristol, UK September, 26th, 2012

  23. NELL: Coupled semi-supervised training of many functions ECML/PKDD2012 Bristol, UK September, 26th, 2012

  24. Coupled Training Type 2: Structured Outputs, Multitask, Posterior Regularization, Multilabel Learn functions with the same input, different outputs, where we know some constraint ECML/PKDD2012 Bristol, UK September, 26th, 2012

  25. Coupled Training Type 2: Structured Outputs, Multitask, Posterior Regularization, Multilabel Learn functions with the same input, different outputs, where we know some constraint ECML/PKDD2012 Bristol, UK September, 26th, 2012

  26. Coupled Training Type 2: Structured Outputs, Multitask, Posterior Regularization, Multilabel Learn functions with the same input, different outputs, where we know some constraint ECML/PKDD2012 Bristol, UK September, 26th, 2012

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