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學生對 华盛顿大学 提供的 Machine Learning: Clustering & Retrieval 的評價和反饋

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376 條評論


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....



Excellent course, well thought out lectures and problem sets. The programming assignments offer an appropriate amount of guidance that allows the students to work through the material on their own.


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.


76 - Machine Learning: Clustering & Retrieval 的 100 個評論(共 364 個)

創建者 Shaowei P


very good course but the last few topics could be improved with better assignments that could be broken down into smaller sub assignments

創建者 Jared C


Exceptional course! This is challenging material for me, but it's presented in such a coherent manner that you can't help but absorb it.

創建者 Saqib N S


The course dived into basic and advanced concepts of unsupervised learning. As before, Prof Fox did a great job at explaining things.

創建者 Yao X


Wish to have more detail on implementing the algorithm. Assignments are too easy for understanding the knowledge behind the scene.

創建者 Songxiang L


Very good, not only learn many good ML concepts, but also polish my python programming skill a lot. Thank you, Emily and Carlos.

創建者 Dongliang Z


I enjoyed this course. This specialization is very good for machine learning beginner. Look forward to the next course anyway.

創建者 Целых А Н


Find the course useful. The authors presented a simple and clear visualization of the meaning of algorithms. Excellent!


創建者 Robert C


Emily was fantastic at explaining difficult to understand concepts. Thoroughly enjoyed the course, and learned quite a lot.

創建者 Kuntal G


Very Good in depth explanation and hand-on lab machine learning course. very focused on real world analytics and algorithms

創建者 Arun K P


Very useful and informative .It help and provide confidence to the job more effectively. Thanks for the help and good cour

創建者 José M T


The teachers are really amazing. They do not just explain it as if they read a book. They explain the concepts very well

創建者 Vikash S N


It was great but I was also interested to implement the solutions with pyspark...though I did it eventually. Thank you!

創建者 Marc G


Clear and well designed course. The assignments are quite thorough. Sometimes, quiz question are not so clear though.

創建者 Andrey N


Some themes are shown very superficially it would be great to go deeper. Despite of this the course is great!


創建者 Rohan K


Good introduction to very complicated concepts. I now have the tools to learn more about HHMs and anomaly detection.

創建者 Justin K


An interesting topic, presented well by the instructor and reinforced by intermediate-level programming assignments.

創建者 Somu P


Excellent course, which gives you all you need to learn about machine learning. Concepts and hands on practical ex

創建者 Freeze F


From LDA onwards the pace ramped up ! Please be slow during advance topics. But altogether it was a great course.

創建者 Fahad S


Emily ross is an amazing instructor. The course introduces many complex topics and presents them intuitively.

創建者 Patrick M


Excellent course. Nice selection of algorithms reviewed - all clearly explained with sample implementations.

創建者 Jorge L


I'm a grad student and I can notice the instructor makes a difference in this course. I fully recommend it.



very good! strongly recommend to people who want to start a career on data science or are interested in it

創建者 Cristian A G F


In general, all of the courses were awesome because of the methodology used by the professors. Thank you!

創建者 Prasant K S


It is explained in simple and lucid language by expert Emily and codes illustrated by Carlos. Go for it.

創建者 João S


Great course. Well packed, well explained, nice practical examples, good all around MOOC with of info.