返回到 Machine Learning: Clustering & Retrieval
University of Washington

Machine Learning: Clustering & Retrieval

Case Studies: Finding Similar Documents A reader is interested in a specific news article and you want to find similar articles to recommend. What is the right notion of similarity? Moreover, what if there are millions of other documents? Each time you want to a retrieve a new document, do you need to search through all other documents? How do you group similar documents together? How do you discover new, emerging topics that the documents cover? In this third case study, finding similar documents, you will examine similarity-based algorithms for retrieval. In this course, you will also examine structured representations for describing the documents in the corpus, including clustering and mixed membership models, such as latent Dirichlet allocation (LDA). You will implement expectation maximization (EM) to learn the document clusterings, and see how to scale the methods using MapReduce. Learning Outcomes: By the end of this course, you will be able to: -Create a document retrieval system using k-nearest neighbors. -Identify various similarity metrics for text data. -Reduce computations in k-nearest neighbor search by using KD-trees. -Produce approximate nearest neighbors using locality sensitive hashing. -Compare and contrast supervised and unsupervised learning tasks. -Cluster documents by topic using k-means. -Describe how to parallelize k-means using MapReduce. -Examine probabilistic clustering approaches using mixtures models. -Fit a mixture of Gaussian model using expectation maximization (EM). -Perform mixed membership modeling using latent Dirichlet allocation (LDA). -Describe the steps of a Gibbs sampler and how to use its output to draw inferences. -Compare and contrast initialization techniques for non-convex optimization objectives. -Implement these techniques in Python.

状态:Machine Learning
状态:Data Mining
课程小时

精选评论

TT

5.0评论日期:Oct 29, 2016

I really learn a lot in this course, although the materials are very difficult at first read, but Emily's explanation were clear and I would be able to get the idea after a few review.

DS

5.0评论日期:Aug 3, 2020

A challenging course!!! It's necessary to fix some compatibility problems with Tury and Windows, because Python 2.7 it's obsolete. I really enjoy it!!!

PJ

5.0评论日期:Oct 27, 2017

A great course to understand clustering as well as text mining. Lectures on KDD and LSH are equally important to understand and implement these algo . Many thanks

SC

4.0评论日期:Jan 6, 2019

This was a really good course, It made me familiar with many tools and techniques used in ML. With this in hand I will be able to go out there and explore and understand things much better.

DP

5.0评论日期:Jan 24, 2017

The material is complex and challenging, but the teaching procedure is carefully thought out in a way that you quickly get it, giving you a great sense of accomplishment.

V

4.0评论日期:Mar 1, 2020

LDA is bit too much for this course. Either they should have taken a lot of time explaining the things clearly or they shouldn't have touched it. I feel it was not taught properly.

SO

5.0评论日期:Jan 29, 2020

A great course, well organized and delivered with detailed info and examples. The quiz and the programming assignments are good and help in applying the course attended.

UZ

5.0评论日期:Nov 27, 2016

This was another great course. I hope that the instructors indulge in a little bit more theory. Anyway it was a magnificent course. Hope the coming courses are as good as this one.

KS

5.0评论日期:Jun 29, 2017

I really enjoyed and learned a lot from this class. It made me interested to go out and learn other machine learning methods which are derived from what was taught.

AA

4.0评论日期:Apr 9, 2017

Overall is great. The LDA and Dendrograms lack quality/specificity and depth of the previous topics. So sad the Specialization collapsed at 4 courses instead of 6.

BK

5.0评论日期:Aug 24, 2016

excellent material! It would be nice, however, to mention some reading material, books or articles, for those interested in the details and the theories behind the concepts presented in the course.

MW

5.0评论日期:Aug 11, 2017

Excellent course. Emily and Carlos are fantastic teachers and have clearly put in a huge amount of effort in makign a great course. Thanks guys!

所有审阅

显示:20/392

Hernan Maldonado
1.0
评论日期:Sep 25, 2017
James Frick
1.0
评论日期:Aug 10, 2016
Eugene Karasev
1.0
评论日期:Feb 10, 2017
Veeraraghavan
4.0
评论日期:Mar 2, 2020
André Filipe de Azevedo Figueiredo Cruz
3.0
评论日期:Jul 25, 2016
Dario Del Giudice
2.0
评论日期:Jan 18, 2020
Edward Foster
5.0
评论日期:Jun 25, 2017
akashkr1498
5.0
评论日期:Jul 8, 2019
Bruno Kümmel
5.0
评论日期:Aug 25, 2016
Pankaj Kabra
5.0
评论日期:Sep 7, 2017
Tsz Wang Kwong
4.0
评论日期:May 14, 2017
Hamel Husain
3.0
评论日期:Aug 6, 2016
Ken Chen
1.0
评论日期:Feb 4, 2017
Phil Bingham
5.0
评论日期:Feb 13, 2018
Sean S
5.0
评论日期:Apr 3, 2018
Leonardo Duarte
5.0
评论日期:Aug 25, 2019
Luiz Cunha
5.0
评论日期:Jul 10, 2018
vacous
5.0
评论日期:Apr 18, 2018
Kim Kyllesbech Larsen
5.0
评论日期:Oct 4, 2016
Uday Agarwal
5.0
评论日期:Aug 12, 2017