'Latent dirichlet' diaporamas de présentation

Latent Dirichlet Allocation a generative model for text

Latent Dirichlet Allocation a generative model for text. David M. Blei, Andrew Y. Ng, Michael I. Jordan (2002) Presenter: Ido Abramovich. Overview. Motivation Other models Notation and terminology Latent Dirichlet allocation method LDA in relation to other models

743 views • 37 slides

Example

Example. 16,000 documents 100 topic Picked those with large p(w|z). New document?. Given a new document, compute and words allocated to each topic approximates p ( z n | w ) See cases where these values are relatively large 4 topics found. Unseen document (contd.).

420 views • 28 slides

271 views • 17 slides

284 views • 17 slides

Scaling Up Graphical Model Inference

Scaling Up Graphical Model Inference. Graphical Models. View observed data and unobserved properties as random variables Graphical Models: compact graph-based encoding of probability distributions (high dimensional, with complex dependencies)

295 views • 15 slides

Scaling Up Graphical Model Inference

Scaling Up Graphical Model Inference. Graphical Models. View observed data and unobserved properties as random variables Graphical Models: compact graph-based encoding of probability distributions (high dimensional, with complex dependencies)

271 views • 15 slides

Statistical Models for Networks and Text

Statistical Models for Networks and Text. Jimmy Foulds UCI Computer Science PhD Student Advisor: Padhraic Smyth. Motivation. Networks often have text associated with them Citation networks Email Social media

235 views • 12 slides

Dirichlet Class Language Models for Speech Recognition

Dirichlet Class Language Models for Speech Recognition. Jen- Tzung Chien , Senior Member, IEEE, and Chuang- Hua Chueh , Student Member, IEEE. IEEE TRANSACTIONS 2011. ???????. Outline. Introduction Survey of Pervious Work Dirichlet Class Language Models (DCLM) Experiments Conclusion.

253 views • 11 slides