Experiments with Non-parametric Topic Models

Add to your list(s) Download to your calendar using vCal

• Prof. Wray Buntine (Monash University)
• Friday 23 January 2015, 11:00-12:00
• Engineering Department, CBL Room BE-438..

If you have a question about this talk, please contact Zoubin Ghahramani.

This talk will cover some of our recent work in extended topic models to serve as tools in text mining and NLP (and hopefully, later, in IR) when some semantic analysis is required. In some sense our goals are akin to the use of Latent Semantic Analysis. The basic theoretical/algorithmic tool we have for this is non-parametric Bayesian methods for reasoning on hierarchies of probability vectors. The concepts will be introduced but not the statistical detail. Then I’ll present some of our KDD 2014 paper (Experiments with Non-parametric Topic Models) that is currently the best performing topic model by a number of metrics, and some extended work such as “Bibliographic Analysis with the Citation Network Topic Model” (ACML 2014) and “Topic Segmentation with a Structured Topic Model” (NAACL 2013). Various evaluations and comparisons will be made.

Bio:

Prof. Wray Buntine joined Monash University in February 2014 after 7 years at NICTA in Canberra Australia. He was previously of Helsinki Institute for Information Technology from 2002, and at NASA Ames Research Center, University of California, Berkeley, and Google. He is known for his theoretical and applied work in document and text analysis, data mining and machine learning, and probabilistic methods. He applies probabilistic and non-parametric methods to tasks such as text analysis. In 2009 he was programme co-chair of ECML -PKDD in Bled, Slovenia, and was programme co-chair of ACML in Singapore in 2012. He reviews for conferences such as ACML , ECIR, SIGIR , ECML -PKDD, ICML , NIPS, UAI , and KDD , and is on the editorial board of Data Mining and Knowledge Discovery

This talk is part of the Machine Learning @ CUED series.

This talk is included in these lists:

• Seminar
• All Talks (aka the CURE list)
• Biology
• CBL important
• Cambridge Centre for Data-Driven Discovery (C2D3)
• Cambridge Forum of Science and Humanities
• Cambridge Language Sciences
• Cambridge Neuroscience Seminars
• Cambridge talks
• Chris Davis' list
• Creating transparent intact animal organs for high-resolution 3D deep-tissue imaging
• Engineering Department, CBL Room BE-438.
• Featured lists
• Guy Emerson's list
• Hanchen DaDaDash
• Inference Group Summary
• Information Engineering Division seminar list
• Interested Talks
• Joint Machine Learning Seminars
• Life Science
• Life Sciences
• ML
• Machine Learning @ CUED
• Machine Learning Summary
• Neuroscience
• Neuroscience Seminars
• Neuroscience Seminars
• Required lists for MLG
• Simon Baker's List
• Stem Cells & Regenerative Medicine
• Trust & Technology Initiative - interesting events
• bld31
• dh539
• ndk22's list
• ob366-ai4er
• rp587
• yk373's list

Note that ex-directory lists are not shown.