event thumbnail image
Machine Learning Summer School 2005 - Canberra
Pascal

Probabilistic Graphical Models

author: Sam Roweis, Department of Computer Science, University of Toronto

Description

My lectures will cover the basics of graphical models, also known as Bayes(ian) (Belief) Net(work)s. We will cover the basic motivations for using probabilities to represent and reason about uncertain knowledge in machine learning, and introduce graphical models as a qualitative and quantitative specification of large joint probability distributions. We will see how many common classification, regression and clustering models can be cast in this framework. We will cover the basic algorithm (called belief propagation) for inference in graphical model structures. We will also cover the major approaches to learning models from data (parameter estimation). The course will focus on directed models and the basic algorithms, but time and student desire permitting, I will also try to give some preliminary explanations of undirected models, approximate inference and learning, structure discovery and current applications.

You might be experiencing some problems with Your Video player.
Slides
0:02 Intelligent Computers
1:45 Core vs. Probabilistic AI
6:28 The Power of Learning
7:32 Uncertainty and Artificial Intelligence (UAI)
8:10 Other Names for UAI
11:05 Applications of Probabilistic Learning
12:07 Related Areas of Study
12:12 Canonical Tasks
16:29 Representation
20:20 Using random variables to represent the world
21:39 Structure of Learning Machines
28:17 Loss Functions for Tuning Parameters
28:22 Training vs. Testing
31:33 Sampling Assumption
34:53 Generalization and Overfitting
38:01 Capacity: Complexity of Hypothesis Space
41:23 Inductive Bias
43:22 Formal Setup
48:26 General Objective Functions
50:29 Probabilistic Approach

Lecture rating

People found this lecture:
Worth seeing
because it is:
 Valuable and informative
Well presented
Easily understandable
Acceptably recorded
You need to login to cast your vote.

Report a problem or upload files

If you have found a problem with this lecture or would like to send us extra material, articles, exercises, etc., please use our ticket system to describe your request and upload the data.
Enter your e-mail into the 'Cc' field, and we will keep you updated with your request's status.

 Watch videos:   (click on thumbnail to launch)

Watch Part 1
Part 1 0:52:06
Flash video Slide Synchronization Windows Media video

!NOW PLAYING
Watch Part 2
Part 2 0:38:51
Flash video Slide Synchronization Windows Media video
Watch Part 3
Part 3 1:02:28
Flash video Slide Synchronization Windows Media video
Watch Part 4
Part 4 0:40:07
Flash video Slide Synchronization Windows Media video
Watch Part 5
Part 5 1:02:34
Flash video Slide Synchronization Windows Media video
Watch Part 6
Part 6 0:42:36
Flash video Slide Synchronization Windows Media video
Watch Part 7
Part 7 0:57:53
Flash video Slide Synchronization Windows Media video
Watch Part 8
Part 8 0:43:01
Flash video Slide Synchronization Windows Media video

Link this page

Would you like to put a link to this lecture on your homepage?
Go ahead! Copy the HTML snippet !

Reviews and comments:

Comment1 Vinay, April 24, 2007 at 11:15 a.m.:

Mr. Sam Roweis lectures are very good.
he presents the theory in an interesting and a non-boring way.


Comment2 sreekanth vp, July 24, 2007 at 3:43 p.m.:

very useful


Comment3 dio, September 8, 2007 at 5:10 a.m.:

great...It open my eyes!


Comment4 b.souissi@yahoo.fr, November 18, 2007 at 2:35 p.m.:

for any case, i would like to thank you very much.
it is very interesting and helpful.

i would like to download the videos presentations about SVM but i couldn't, because i need them in my research.

can you help me to get them.


Comment5 Natasha26, November 20, 2007 at 6:28 p.m.:

so cool! thanks...


Comment6 Ibrahim El-Semman, November 23, 2007 at 1:36 p.m.:

It is a useful lectures, My best regards to Prof. Sam


Comment7 Abdul Rehman Abbasi, April 20, 2008 at 1:11 p.m.:

Lectures by Sam are really helpful for variety of audience doing either courses or research. His style is very very effective but some time I feel that he needs to repeat some point especially when it is really important one.

Thanks


Comment8 Hasinur Rahaman Khan, May 10, 2008 at 1:52 p.m.:

His presentation is nice and I personally have been benefited from his lecture. Now things to me are quite easier than my previous feelings. Thanks


Comment9 Ahmed, June 29, 2008 at 5:10 p.m.:

He is a very good lecturer and its great tof ind these things on video lectures which usually we donot get in avrsities


Write your own review or comment: