Capstone did provide a true test of Data Analytics skills. Its like a being left alone in a jungle to survive for a month. Either you succumb to nature or come out alive with a smile and confidence.
Wow i finally managed to finish the specialization!! definitely learned a lot and also found out difficulties in building predictors by trying to balancing speed, accuracy and memory constraints!!!
교육 기관: Visha P•
Really enjoyed this specialization and have learned a ton (and now applying it too!). Sadly, won't be able to get to finish off the specialization because the capstone course is just too different from what we learned, especially with the prediction model piece. Not using the package caret at all and that was the main premise of that course and I just really can't figure out how to build out prediction model with this kind of structure. Kind of bummed because I was looking forward to the certificate - but I just couldn't figure it out in a way that would be my own. Shoutout to the people who are able to figure this out and extrapolate all their learning to finish it. My brain just doesn't work well like this. I need examples and then can replicate. Please let me know if you ever modify the capstone experience and I will try to come back and finish it! Thanks for all the great material - will be using for sure.
교육 기관: Diego C G•
Could be better. The teacher sometimes explain the concepts in a hard way, and not always shows how to do in practice.
But you will get curious and in case of doubts, you can find more simple explanations on the web, and the forum is very good.
The assignments are hard, you will need do research to accomplish then, but is the best way to learn.
I think the specialization is good to someone without much knowledge on the field (like me). But it's only the start!
교육 기관: Antonio E C•
It's been a challenge to learn all these new concepts and package them into a working product in such a small period of time. I am glad of the things I learned. Also, in my opinion the materials / resources given to this course are scarce compared with previous courses of the specialization.
교육 기관: Matias T•
Hi, the prject was nice and at the end I learned some new things, but it didn't have people to provide any guide. In the videos it was said that personal from SwiftKey will be there as well as JHU teachers could provide some insights. It looked a bit like a phantom course
교육 기관: Rainer-Anton E•
I liked all previous courses. However, it feels like the task is a little outdated.
Maybe it would already help if students were free to use the programming language and approach they prefer. Like python and RNN models.
교육 기관: H Y•
It's an inspiring project in the field of NLP, however, the major concern is that this topic and the corresponding skills have never been introduced before the capstone project.
교육 기관: Max D•
NLP module should definitely be included into JHU Data Science specialization.
교육 기관: Michael N•
Had to learn a lot on our own but very valuable content once acquired.
교육 기관: Pradnya C•
Most stressful but interesting. Not enough material was provided
교육 기관: Adam B•
I liked every course in this specialization except
교육 기관: Tracy S•
it could've given more instructions!
교육 기관: Jeffrey G•
With the exception of R Shiny programming, there was nothing about this course that required any real knowledge of anything in any course of the JHU Data Science certificate track. Why do you ask? Well, most of the class was just about learning natural language processing (NLP), which wasn't covered. What about R programming, you ask? Most of the NLP packages in R that I tested out couldn't process a 200MB text file in a reasonable amount of time or with a reasonable memory footprint. I ran Python and R programs in parallel to do sentence and word tokenization, and Python's nltk was (not exaggerating) 100x faster than R's NLP package, and R's tm package took 4GB of memory to parse the same 200MB corpus. In 2018, that's just unacceptable. There's no way you could ever write production-quality NLP code using these R packages. After the course was finished, someone pointed out an R package that could adequately accomplish the task, but by then it was far too late. Even R's basic data structures themselves weren't up to the challenge. I ended up building my model in Python, exporting it as JSON, and then importing that into my Shiny app. Comparing basic data structures in Python and R to represent the same JSON file (i.e., just read in the file and measure the size of the resulting object), R's list was nearly 2x as large in RAM than Python's dict. All of this combined with really very little reference to most of the material in the other nine classes in this track left me very disappointed. The reason I gave the class two stars and not one was because what we did learn about NLP was useful. Having to solve a gnarly, real-world problem starting from raw data is useful. Having to write an app with actual users interacting with it is useful. But could just about everything about this class have been done a lot better? Yes. I think a machine learning project that tied together everything that we'd worked on up until this point would have been a lot more fun and rewarding.
교육 기관: Leo C•
Sadly disappointed. I can see how this worked before, when most people were active on the forums, but now it's extremely frustrating. Not because it's hard, I do not mind that, but because you really have to DIG through the forums to find vital information.
For instance, there are two quizes, you need 80 % or more to pass. However, the app you are simulating only get 20-30 % on such quizes, and you're not REALLY supposed to get that high. That's in the forums, but not on the quiz itself.
Also, very few things you've learned in the ML part of the specialization is actually used, and they specifically points you to a MOOC by another university. That's not very comforting.
The good part though is that the actual final exam does not really need good predictions to work, just an app that functions as you say it does. My tip? Look at the NLP, google a bit and learn the basics, then make an app that's as simple as possible - Then learn NLP with some guidance.
교육 기관: Michael S•
Of all the offerings in the specialization, this one felt like it was thrown together in less than hour. I expected to have to learn quite a bit of material on my own, but even the references to additional materials were very thin.
I could have saved many days if more guidance on the project workflow would have been given. The pre-processing of the data was quite extensive (9 steps before generating the ngram tables I used in my model) and was the key to getting decent results IMHO, but one had to step on a quite a few landmines to figure this out.
The problem was an interesting one and I ended up reworking it after passing with 95% (the only class in the specialization I didn't get 100% on) because I didn't have time to implement much of what I had to figure out by 'hard-knocks'
교육 기관: Marco S C•
Unfortunately this project is not fully aligned with all the previous program, which is a shame. Ideally, the project was more related to quantitative data, or have compulsory module NPL. It was certainly a very important learning, but very stressful to have to grasp NPL and do the project in a short time.
Learning NPL in short time in a DIY way without any help it was very negative and stressful.
교육 기관: Sandro R•
As other reviewers said, the Capstone is too unconnected to the rest of the specialization. In the end, there is no metric as to what makes your model successful, it's just the Slides and the appearance of the Shiny app that counts towards the total mark. Also, the topic (Natural Language Processing) is just too unconnected to anything seen in the other courses. It was fun, but felt a bit off.
교육 기관: Tavin C•
The series leading up to the capstone was excellent but the capstone itself was a disappointment. Very little instruction was provided and the grading criteria were flawed. Also, most of what we learned in the first 9 courses about statistics and machine learning turned out to be irrelevant to the capstone project.
교육 기관: Clara B•
The course has nearly nothing to do with the previous themes. I already have had enough knowledge, but as there is no support by the team it seems to be rather time consuming for others.
교육 기관: WONG L C•
I hope it will involve statistics analysis in the capstone project. It is kind of bias to apply NLP knowledge and develop data product in the capstone project.
교육 기관: Sevdalena L•
Not enough information on how to approach the final project. The project itself is very time consuming with lots of self learning and unclear specifications.
교육 기관: Lee M S•
The capstone project doesn't fully utilise d knowledge from earlier modules such as Machine Learning, statistical analysis, regression models n etc.
교육 기관: CW•
No physical way to complete the class within one session. Little is learned, no instruction is given, just build a thing that sort of works.
교육 기관: Dmitri P•
The course is outdated and abandoned by the teachers.
SwiftKey engineers are nowhere to be seen.
There is no guidance.
교육 기관: yohan A H•
Thanks for the guide but I did the hole course without instructions, there were new thing that could be tougth.
교육 기관: unijoy•
need more details