Latent Dirichlet Allocation (Part 1 of 2)

Latent Dirichlet Allocation is a powerful machine learning technique used to sort documents by topic. Learn all about it in this video!

This is part 1 of a 2 video series.

Discount code (40%): serranoyt

0:00 Introduction
0:11 The problem
3:47 Machine that generates documents
5:13 Blueprint for the LDA machine
5:49 Probability of a document
9:22 Quiz: Which one for topics?
11:06 A distribution of distributions
11:30 More topics? More dimensions
12:20 In More dimensions
12:55 Quiz: Where to put the topics?
14:05 Two Dirichlet distributions
14:22 Latent Dirichlet Allocation
22:05 Best settings on the machine
22:37 The winning arrangements
25:28 Series of two videos
25:48 Acknowledgements
26:30 Thank you!

[abidhasan]

The first time ever I got what Dirichlet distribution does. Thank you. Very useful explanation.

[daphnechang]

BEST LDA videos out there. Stop looking, watch this one and you will finally be happy.

[carabidus]

I literally laughed out loud when "lions" suddenly appeared in one of the corners! You're videos are sheer genius, Dr. Serrano.

[quonxinquonyi]

Better than all of mit Stanford and Ivy League money monsters combined...gem of an explaination

[haolicoder-]

I have watched more than 8 videos about LDA on Youtube. This is the best-explained video about LDA I have watched. Thank you very much.

[gergerger]

Luis, you are an absolute gem of a teacher, a complete pedagogical inspiration. In my wildest dreams I couldn't have come up with such a clear way to demonstrate LDA. It's like watching a genius at work :)

[mohankrishna]

omg this was the crystal clear explanation even a high school kid can understand the concepts.
one great man said "if you can't explain in simple then you haven't understood properly".
Big thanks to the channel.

[KannanKalidasan]

Explaining hard concepts in simple visual representation is a unique genius. Thank you for creating such beautiful contents Dr. Serrano

[khengkok]

absolute gem. Can't find any clearer and intuitive explanation of LDA than this.

[peiyangsong]

I finally understand how does the LDA work. Thank you, lifesaver!

[raghavamorusupalli]

Dr Serrano, you just have put me over the moon. Thank you for your elegant explanation of this complex generative model topic.

[ardaicen]

I loved the way you gave the intuition gently by using the analogies. Great teaching and explanation of the topic.

[SI-ifcc]

I'm currently researching distributed representations, and I wanted to learn about LDA, but I didn't even know what LDA was to begin with. Your video really helped me understand it. Thank you, and I'm eager to keep going and learn more.

[chunchang]

the quality of this teaching is amazingly good!

[GarveRagnara]

Best LDA explanation on the internet. Thank you!

[spencerlee]

awesome! The first time i understand LDA!

[jonathanzevi]

Best video on Dirichlet by a long shot. Thanks!

[lexot]

The best explanation of LDA I have EVER seen ! Thank you so much !

[rush]

thnak you so much...been reading for months and you sorted out my queries in 26 minutes...wish you well and keep up the great work you've done!

[amankapri]

I have been looking for this topic all over the internet but couldn't find any, where it is explained this clearly.

Thank you :)