Archive for October, 2014

h1

A tutorial on non-parametric methods

October 30, 2014

Right now, probably the best general purpose methods for what Frank Wood and Yee Whye Teh called the Graphical Pitman-Yor Process (see their AI&Stats 2009 paper) are ours using table indicators.  I gave a tutorial on the hierarchical Dirichlet Process, and the hierarchical Pitman-Yor Process at Monash last week, and the slides are here.  Still developing these, so they will be improved.  Haven’t made the extension from hierarchical to graphical yet but its in Lan Du‘s PhD thesis.  The examples given in the tutorial are about topic models and n-gram models.

Advertisements
h1

Talk at RMIT on “Latent Semantic Modelling”

October 16, 2014

I realised non-parametric methods are rather like deep neural networks.  Anyway, here’s a more high level talk given at RMIT summarising recent work.