Topic Models
Channel: VideoLecturesChannel
Date: 13/12/2012

VideoLectures.Net
View the talk in context: http://videolectures.net/mlss09uk_blei_tm/
View the complete Machine Learning Summer School (MLSS), Cambridge 2009: http://videolectures.net/mlss09uk_cambridge/
Speaker: David Blei, Computer Science Department, Princeton University 

License: Creative Commons CC BY-NC-ND 3.0
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0:00  Topic Models
0:44  The problem with information
1:21  Topic modeling
2:58  Discover topics from a corpus
4:49  Model the evolution of topics over time
5:16  Model connections between topics
6:04  Annotate images
7:33  Topic modeling topics (1)
9:13  Topic modeling topics (2)
10:56  Topic modeling topics (1)
11:57  Topic modeling topics (2)
12:03  Latent Dirichlet Allocation
12:07  Probabilistic modeling
13:24  Intuition behind LDA
15:15  Generative model
22:41  The posterior distribution
23:40  Graphical models (Aside) (1)
24:53  Graphical models (Aside) (2)
25:57  Latent Dirichlet allocation
41:44  The Dirichlet distribution (1)
45:02  The Dirichlet distribution (2)
63:59  Latent Dirichlet allocation (1)
66:54  Latent Dirichlet allocation (2)
67:49  Latent Dirichlet allocation (3)
69:10  Example inference (1)
71:51  Example inference (2)
73:34  Latent Dirichlet allocation (3)
73:56  Example inference (2)
74:02  Example inference (3)
75:50  Example inference (4)
76:07  Example inference (5)
76:56  Used to explore and browse document collections
79:52  Why does LDA "work"?
80:49  Generative model