學生對 deeplearning.ai 提供的 Sequence Models 的評價和反饋

super unorganized!

really really bad

I was really happy because I could learn deep learning from Andrew Ng.

The lectures were fantastic and amazing.

I was able to catch really important concepts of sequence models.

Thanks a lot!

Some coding assignments were too hard to follow what was required.

I went through all course of DeepLearning.ai Specialization. While I was more, or less happy with first 4 courses in this specialization, I have a very bad impression regarding "Sequence Models" course. Actually, quality of the courses is gradually declining, starting from 5 stars for very first course in specialization, ending with 2 stars for "Sequence Models".

"Sequence Models" course is *disappointing*. It leaves you with bunch of scratches on the surface of technology without any details and/or understanding of how technology works. In simple words, it is not the course, it is bad overview of just few technologies. In order to get similar comprehension of technologies delivered in first four courses of this specialization you will need to spend a lot more time digging for information elsewhere.

Same issue with homework assignments. They are a bit helpful for technology understanding to some small extent, but they do lack depth.

Whole "Sequence Model" course looks like compromised/failed attempt to explain fairly complex material to newcomers. As a result, newcomers won't understand anything due to complexity of the matter, experienced engineers won't take away anything due to simplified explanations and absence of details.

If you do not plan to get a DeepLearning.ai Specialization certificate, I do not recommend to buy this course. Unfortunately, it will be a waste of your time and money.

Assignments were extremely didactic; there was no room for creativity. They were not transparent and gave a minimal idea of how to implement these things properly. Course moderators did not bother to answer any of my queries, making the course even less intellectually stimulating. The lectures were monotonous, and hence, I was having trouble finding them to be very engaging. Although, the professor did give some insightful points.

In conclusion, I wouldn't recommend this course to someone unless they are extremely novice programmers. Yet, one may refer to the videos to gain some conceptual clarity on specific topics.

This course felt rushed. Especially, the programming assignments, which had many errors and were frustrating at time. It is still worth it since the content is really good -- only if you are willing to go through the frustration during the programming exercises.

This course has many inconsistencies and errors in the homework. Seems like a rushed job.

some optional exercises are wrong, wasted a lot of time on LSTM backward propagation

It was difficult to follow the programming exercises because many of it had already been written. I think it would be more useful to learn one framework instead of using both keras and tensorflow in one course. I still don't know how to debug any of these frameworks. Without the forums, it would be very difficult to pass the assignments. Sometimes there were bugs in the jupyter notebook, sometimes typos that were misleading. As a result, it took me many hours stuck on one assignment. It would be good if these comments are taken into account for the future classes of this course. I really enjoy Andrew Ng.'s courses but I was disappointed at this last course's assignments.

There are a lot of mistakes in programming assignment. Please update and fix it

Wonderful end to this Deep Learning Specialization. The programming assignments cover up a variety of hot topics in the Deep Learning market. The videos are very well made and teach the content in depth. A special thanks to Prof. Andrew for yet another amazing course in this wonderful specialization!

Great module, I am lucky to have used this resources in learning sequence models, I can imagine running LSTM using one of the frameworks without ever implementing it myself, Andrew Ng/Deeplearning.ai is the best!

Professor Andrew is really knowledgeable. I learn a lot from his lecture videos.

Very good course which gives a nice intuition to sequence deep learning modelling. Unfortunately, this is the weakest one among the whole specialization. There are no deep explanation of LSTM as well as GRU and back-propagation algorithm. Seq2seq models explanation is not clear and looks too inconsistent. I had to read a lot of the additional materials and blogs in order to understood a theory behind lectures. Hence, the first week assignments were disagreeably difficult to complete, whereas second and third week assignments were comparatively easy. I think this course should be revised or prolonged for 4 weeks to cover LSTM models more profoundly. Nevertheless, I would like to thank Prof. Andrew Ng for really great job and initiatives in such an important area of study!

Little bit math heavy. It was sometimes hard to understand the intuition, e.g. RNN, LSTM, GRU

Could have been more thorough like previous courses

If it could improve assignment accuracy, it will be better

there are a lot of mistakes in programming assignments.

I will remember this course for all bad reasons. Poorly written programming assignments. These things not only wasted the time but days in doing the nonsense. It must be understood that people who are enrolled in such courses and specializations are doing it in their part-time and wasting their time in solving someone else's crap is totally not acceptable. I will never recommend this specialization to anyone. It is a waste of resources (time, money and energy).

Poor submission system. Failed many times to upload and had to redo the assignments. I was using a 250Mbps high speed network. Also course materials are problematic. The instructors are not willing to fix the problems for many years.

TensorFlow and Keras basics are not covered. The course states no pre-requisites as well. This was really disappointing.

Not as good as other 4 courses of the specialization

What to say after spending this whole weeks in the digital company of Andrew? :) Well, I have to words but to thank Andrew and the team for making the effort and putting all this together and pulling it off the way they did! I did already the NLP Specialization of DeepLearning.AI and wanted to learn more about the inner workings of neural nets and I was not a single minute disappointed by my decision! Extremely well done overall! In particular the course on Sequence models is very enjoyable and will give you all the tools and intuition necessary to understand the background and the basis of such models and how they work! You even have a last week on Attention-based models, which is a little bit introductory, given that Attention as a concept exploded after this course was developed. Nevertheless, it is very well executed! My only critique is that, the whole specialization was developed before TensorFlow 2.0, and later on it the assignments were ported and Keras is used. But during the lectures on will not find any introduction to Keras and all this content is left for the assignments. This requires from the student more effort to understand and use Keras. What can be a bit frustrating, because Keras API also evolved during this time. I would suggest adding a couple of videos or ungraded labs in order to teach the student a bit better how to use the framework. But well, this is a minor issue. 5 Stars are for the overall amazing presentation of what is indeed important, the Deep Learning fundamentals. Moreover, Andrews last video is just very much aspiring and a powerful message that everyone in the field should come in contact with! Congrats! I hope the team plan to execute soon an updated version of the specialization in order to incorporate the new advances and to adapt it to the newest DL Framework. Apart from that the theory videos are 5 out of 5. Clear recommendation!

A year ago I was basically "on blank" in regards of Machine Learning.

I've started "my journey" on ML about 9 months ago, with a text book I've got on Amazon called "Data Mining, Practical Machine Learning Tools and Techniques", Self taught I've read, transcribed, done some math, covered the half of it. But I needed something more practical to speed up, so I've tried also with the coursesfrom "Super Data Science"'s team on Udemy, but found them to be too focused on practice rather than deep reasoning of it (I might be wrong but that's the impression I had); So I needed more formal, University-like.

I've decided to try out Andrew's first course on Machine Learning (with Matlab), which gave me much greater view and understanding, had my head melting specially on weeks 4-6, but after finishing the course I've felt I did finally know what ML was! but still there was "a lot missing", given the course was already a bit old, and the technology had developed greatly since then.

Fortunately to me, I've found out about this specialisation right after I've finished the first course and I've signed up immediately. Today (14.4.2018) I've finished the second specialisation. After 6 months of continuos dedication, doing the first 3 month course, plus this 3 month specialisation.

Homeworks in Matlab and Python were my next challenge, even I'm a developer for 15 years (C# / Java, C). Combining a lot of new theory in a new language made it harder but also satisfying.

I'm the kind of person that needs to understand why things work as they work, that might be my weakness but also my strength; It's not enough for me to drive the car, but I need to know how to tune it. I must tell that for example, a video/lecture of 15 minutes meant to me usually 60 minutes of work, transcribing, doing the math, etc. That made my 6 months particularly long..

This is again a fantastic course and what a nice way to finish the Deep Learning Specialization. It is certainly the most difficult one from the whole specialization and has taken me a lot longer than I planned. This is partially due to the fact that focus is shifted a bit more towards the programming assignments and concepts that are only briefly mentioned in the lectures turn out to be crucial for the assignments. The forum helps a lot, without it I would not have been able to crack the first week, especially the optional parts of the assignments. There were also a few errors in derivation formulas, that had set me back, but in the end I understood the concepts a lot better and found some nice complementary resources online. And the RNNs are more complex and seem more variable than other network architectures, so that is ok that this course is more difficult. Now I feel that I finally have a good grasp of Deep Learning concepts and have a nice set of skills. And the assignments are super fun and very useful. Thank you Andrew Ng and your team for making such a wonderful content. I teach at the university-level and I can only imagine how much effort goes into preparing such a course and at such a high level of expertise. I encourage everyone to take this specialization, this specialization is the main gem in Coursera, in my opinion.