Jul 17, 2018
This is one hell of an inspiring course that demystified the difficult concepts and math behind PCA. Excellent instructors in imparting the these knowledge with easy-to-understand illustrations.
May 01, 2018
This course was definitely a bit more complex, not so much in assignments but in the core concepts handled, than the others in the specialisation. Overall, it was fun to do this course!
par Suyog P•
Sep 02, 2019
Finally understood basic intuition of PCA, never got perfect resource before. However, there was a sharp change in terms of course delivery than the previous two courses of this specialization. So, heads up.
par Xin W•
Sep 06, 2019
This course is full of mathematical derivation, so it is kind of boring.
par Abhishek P•
Sep 09, 2019
Course content tackles a difficult topic well. Only flaw is that programming assignments are poorly designed in some places and are quite difficult to pick up at times.
par Gaetano F•
Oct 10, 2019
I found the course excellent but in the programming assignments is not always clear what should one exactly do. They are also quite confusing, especially the last one on PCA implementation. One wastes so much time trying to figure out the solution.
par Ruan v S•
Oct 14, 2019
Harder than expected, the content is good and is well worth the struggle!
par Shariq A•
Oct 20, 2019
Thank you professor for providing such a valuable course.
Just I wanted to say one thing without hurting anyone, the week 4 on PCA is not very clear. The derivation are not very correlated .A humble request isthat to elaborate the derivation which would further enhance the learning
par Voravich C•
Oct 21, 2019
The course level is very difficult and I think having four week course is not enough to understand the math behind PCA
par Manju S•
Jan 29, 2019
Instructor has good knowledge of the subject. The course content structure is designed well.
Concepts could have been presented with more clarity. Programming assignments need more instructions and less assumption on what the students already know.
par Prashant D•
Feb 17, 2019
The lecturer is good and probably has a very good understanding of the mathematics. However if you are looking for a light and easy course, then this one is not for you. The mathematics is sometimes difficult to follow and although the lecturer patiently explains the derivation of the results, I had to go back and forth a number of times to understand what was happening.
par Malcolm M•
Mar 06, 2019
Far more challenging than the first two courses.
par Sagun P S•
Mar 14, 2019
Tough one if you are new to programming or doesn't have excellent understanding of Maths
par Chuwei L•
Apr 05, 2019
worse than previous courses of machine learning specialization. Really confused me when introduced the inner products.
par Wang Z•
Jul 08, 2018
The knowledge introduced in this course is really helpful. However, the programming assignments are very time consuming and not necessarily relevent
Jul 09, 2018
Honestly this course is the one worthing attempting. However, last week's content is really messy and challenging.
par francesc b•
Jun 02, 2018
I found hard to follow the mathematical proofs, and without a clear step by step formula sheet the last assignment was very hard. All in all I found the course very useful, although I would have liked more intuitive comprehension rather than deep mathematical comprehension. The previous two courses I think matched the balance. Potentially this was not possible for PCA?
par Piotr G•
Apr 23, 2018
This course is overall good in terms of the accuracy and obvious deep knowledge of the tutor. However, after the first two modules of this course I expected a completely different approach with way more conceptual thinking than writing proofs and long derivations which can be found on Wikipedia and other websites. It seems to me that there is a clear mismatch between the styles of the first 2 modules and the 3rd course. I'm giving it only three stars because this is not what I expected, I signed up for this track to gain additional conceptual overview of how maths in many machine learning applications works on high level. On the other side though, the assignments and quizzes were harder in this course which is a big plus.
par Chi W•
May 19, 2018
Really hard to be a fan of this course. The lectures are simply lists of formulas and theorems without few examples. And the quizzes must be made out by a Chinese, as its purpose is not testing how much you have understood the course but how careful you are instead and even if you have a powerful calculator. Hope the stuff can give us more examples and quizzes not so tricky.
par Meraldo A•
May 08, 2018
The course content was good; however, it was not well explained at times.
par Philippe R•
May 16, 2018
Very mixed feelings about this course. First three weeks are OK, but going from week 3 to week 4 is like a HUGE step in difficulty if you really want to follow it all. Which is a pity because week 4 is the whole purpose for the course!
I learned "some" about the subject, but not to the level that I can say I understand it fully.
The assignments are OK, but the instructions are not always all that clear, leaving you at times wondering what is expected from you. And not that it is specific to this course, but the grader feedback is not all that helpful. If that is the only information you rely on to figure out where you may have gone wrong in a programming assignment, fixing your mistakes is likely to take quite some time.
All in all, an "OK" course, but not one that I would take again. I will most likely resort to other sources to get a better understanding of the subject.
par Iurii S•
Mar 26, 2018
Decent explanations of PCA idea, but assignments do not provide a clear feedback of what is wrong with the implementation util you get it right.
par Nicholas K•
Apr 28, 2018
It's a shame. There's lots of good material and I learned a lot. But a staggering amount of time was wasted figuring out gaps in the instructions - portions felt more like hazing than teaching.
par Arnaud J•
Jun 12, 2018
This course is way more brutal than the two previous courses in the specializationIt is also very mathematically oriented, it lacks the graphics / animation / intuition that was given in the first two courses.However, if you make it, you indeed have a good understanding of PCA.
par Nigel H•
Apr 18, 2018
I want to give this course a higher rating but I was disappointed; the production standards are as high as ever but the assignments are a bit heavy on the Python. If you are inexperienced in coding Python you may be in trouble. This is not the case for the first two courses of this specialisation. If it is the maths that concerns you .. you are in safe hands. very well taught. Thanks
par Ronny A•
Oct 15, 2018
The content is good. But there were Jupyter Notebook/Server problems. (i) Submit button on notebooks did not work. Posted about this and staff did not respond or help. Then I found a workaround and shared with others. (ii) The graded assignments could be run ok, but the optional ones could not run at all owing to server timeout/bandwidth problems.
par Toan T L•
Oct 03, 2018
Thank you to all the professors and staffs for such a wonderful program. I did learn a lot.
This last course is indeed a fun and challenging one. But it fells short compared to the other two due to some aspects which can be improved in the future.
Nevertheless, I'm glad that I can learn about PCA.