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学生对 Johns Hopkins University 提供的 Practical Machine Learning 的评价和反馈

4.5
3,257 个评分

课程概述

One of the most common tasks performed by data scientists and data analysts are prediction and machine learning. This course will cover the basic components of building and applying prediction functions with an emphasis on practical applications. The course will provide basic grounding in concepts such as training and tests sets, overfitting, and error rates. The course will also introduce a range of model based and algorithmic machine learning methods including regression, classification trees, Naive Bayes, and random forests. The course will cover the complete process of building prediction functions including data collection, feature creation, algorithms, and evaluation....

热门审阅

VG

Nov 8, 2020

Great introduction to ML.Demands focus and hard work. Forces one to review earlier courses - Statistical Inference, regression models, EDA.Leaves lots of appetite for additional knowledge and skills.

JC

Jan 16, 2017

excellent course. Be prepared to learn a lot if you work hard and don't give up if you think it is hard, just continue thinking, and interact with other students and tutors + Google and Stackoverflow!

筛选依据:

551 - Practical Machine Learning 的 575 个评论(共 623 个)

创建者 Joseph I

Feb 1, 2020

Material was very interesting but was covered at a very high level and a lot of additional learning was required.

创建者 José A G R

Feb 5, 2017

Superfluous but the existence of the package "caret" covers the gap of other libraries like "skilearn" of python

创建者 Bauyrjan J

Mar 1, 2017

Instructor rushes the course and does not explain much in the same level of details as respective quiz requires

创建者 Hongzhi Z

Jan 2, 2018

All the formulas and code in slides are too abstract. If can be more charts to interpret that will be better.

创建者 Henrique C A

Oct 13, 2016

Exercises could be more complete, and some are outdated for latest R, giving slightly different results.

创建者 Alex F

Dec 29, 2018

A fine introduction, but there are much more engaging and better quality courses out there...

创建者 Yingnan X

Feb 11, 2016

If you have taken Andrew Ng's machine learning class, it's not necessary to take this one.

创建者 yohan A H

Sep 6, 2019

I think it was a very fast course and I feel more real examples would have been useful,

创建者 fabio a a l l

Nov 14, 2017

Poor supporting material in a course that tries to cover a lot in a very limited time.

创建者 Rafael S

Jul 24, 2018

this course seemed too rushed for me, too little content for such a extense subject

创建者 Raj V J

Jan 24, 2016

more needs to be taught in class. what is taught is not sufficient for quizzes.

创建者 Surjya N P

Jul 2, 2017

Overally course is good. But weekly programming assignments will be great.

创建者 王也

Dec 17, 2016

Too different for beginners but not deep enough for ones already know R.

创建者 James F

Sep 10, 2016

Quizzes are useful exercises but need to do a lot of self studying.

创建者 Philip A

Feb 26, 2017

mentorship was great, but the video lectures were almost useless.

创建者 Christoph G

Dec 4, 2016

The topic is too big, for one course from my point of view.

创建者 Ariel S G

Jun 27, 2017

In my opinion, this course needs a few extra exercises.

创建者 Jorge L

Oct 13, 2016

Fair but assignments are not very well explained

创建者 Bahaa A

Oct 19, 2016

Good enough to open up mind of researcher

创建者 Johnnery A

Mar 20, 2020

I need study more this course

创建者 Sergio R

Sep 20, 2017

I miss Swirl

创建者 Serene S

Apr 28, 2016

too easy

创建者 Estrella P

Jul 7, 2020

.

创建者 Miguel C

May 10, 2020

I really enjoyed the content of the course. I already knew a fair amount about machine learning but I learned a lot more than I thought I would. Most contents of weeks 3 and 4 - decision trees and random forests, bagging and boosting, linear discriminant analysis and naive Bayes, forecasting and unsupervised predictions - were my favourite topics in this course.

The biggest disappointment in this course for me were the outdated quizzes. I worked really hard through this course and most of the Data Science specialisation. But the quizzes are set up for older versions of R and some of its packages, so the results are completely different from what I got most of the time. I found this extremely frustrating and disheartening and had to repeat the quizzes several times. I do realise that most quizzes enumerate at the beginning the versions they are using, but there is no mention of how one goes about to set that up in R. On top of that, given that I rarely passed the quiz on the first try my Skill Tracking score dropped considerably, undermining weeks and weeks of hard work.

Unfortunately, this tainted my view of this course and I would advise the course organisers to update it as soon as possible.

创建者 Michael S

Feb 6, 2016

Had big expectations for this one... really one of the ones to look forward to after working through the beginning of the specialization, but for some reason, it seemed any prof or even TA interaction was absent this time around like in none of the other specialization coursed to date. Bugs in the new interface and quizzes weren't really addressed. Couldn't even get an official response about the apparent removal of Distinction-level now (which I'd been working to get in all specialization courses and now seems no longer an option). Still interesting content. As a "free" course, it's still really valuable. As one of the people that paid for this and all others in this specialization, this is the one I felt didn't return as much value to justify the payment with no "official" course staff seeming to be involved this round.