Voltar para Redes neurais e aprendizagem profunda

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114,721 classificaÃ§Ãµes

In the first course of the Deep Learning Specialization, you will study the foundational concept of neural networks and deep learning.
By the end, you will be familiar with the significant technological trends driving the rise of deep learning; build, train, and apply fully connected deep neural networks; implement efficient (vectorized) neural networks; identify key parameters in a neural networkâ€™s architecture; and apply deep learning to your own applications.
The Deep Learning Specialization is our foundational program that will help you understand the capabilities, challenges, and consequences of deep learning and prepare you to participate in the development of leading-edge AI technology. It provides a pathway for you to gain the knowledge and skills to apply machine learning to your work, level up your technical career, and take the definitive step in the world of AI....

AA

2 de jul de 2020

Excellent course !!!

The flow is perfect and is very easy to understand and follow the course

I loved the simplicity with which Andrew explained the concepts. Great contribution to the community

SM

13 de jun de 2021

Andrew Ng is one of the best teachers out there to learn NNs and DL. His deep insight into the math of the subject gives us motivation to learn more, amazing course to learn the basics of the subject.

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por vatsal m

â€¢14 de set de 2017

I enjoyed the lectures and a few practice quiz. But I don't think the structure of assignments presented here is the correct way to assess learning. The assignments or exercises should be interspersed between lectures and the problems should be more interactive (pushing the student to think). Moreover, the amount of pre-written code was immense and therefore didn't really make me think a lot on my own. This structure of assignment forces the student to focus on matching the expected output instead of really understanding the concept. I am pretty sure most students did not really grasp the concepts at an intellectual level but still passed with decent grades. This is exactly the problem with schools today and I hope that Coursera is working towards rectifying that.

How do we create a learning platform that forces the student to intellectually interact with the problems? Many students that come here have picked up bad habits from their previous learning careers. They bring those bad habits here and it's up to Coursera to somehow try and make them unlearn those habits. This course instead allowed the students to happily use their bad habits and finish it feeling accomplished.

por Jonathan C

â€¢20 de ago de 2017

The course expands on the neural network portion of Andrew Ng's original Machine Learning course, but ported over to Python. Even though it is spread out over 4 weeks, it really doesn't cover any additional material. Instead, Ng repetitively goes over the math and coding with vectors in Python, while stressing how hard the calculus derivation would be. This might all be helpful to you if calculus was not your strong suit, but my guess is that if you have any kind of background in computer science or statistics, the math in this course would be almost elementary.

The assignments are done on Python Jupyter notebooks, which has the advantage of a standard environment, but disadvantage in that it hides some abstractions. Specifically, you lose the sense of what the actual code would look like in a Python IDE. Sure, you can download the notebooks as .py files. Much of the code is pre-written, and you only fill in a few lines of code in each assignment. It would take a lot of self-study on what's actually going on in setting up the programs to actually be able to self-write a neural network. Although Python is without question more popular in machine learning than Octave, it is more popular because of its library support, and in a course that requires you to build your own neural network instead of using libraries (besides numpy), that doesn't matter. I preferred doing the assignments in Octave rather than the notebooks.

Since it is impossible to purchase this course on its own, perhaps the bigger question is whether the specialization is worth it. Courses 4 and 5 are not up at the time of this review, but Course 3 is only 2 weeks with 2 quizzes and no programming assignments, and Course 2 is about hyperparameter tuning, arguably the most novel in the 3 courses, but still not something that deserves its own specialization or even its own course.

My suggestion is to watch all the lectures for free. And then use your free week to do the programming assignments, which you can probably finish in a day, across all the courses.

por Mageswaran D

â€¢9 de nov de 2017

I felt the assignments are more of a fill in the blanks, than using brain. There was not much of a challenge considering my Scala certification

por Mohammad S B H

â€¢28 de abr de 2019

This is a good course with good explanation but the only problem with this course is that it covers so much information all at once during the entire week and then there is just literally one or two programming assignment at the end. There should be exercise questions after every video to apply those skills taught in theory into programming. I now know general concept of deep learning but I still barely have a clue on how to code those concepts. If I wanted to code all that myself I still wouldn't even know where to start, where to get the data etc etc because the programming assignments were just, now write this, now write that. Also there should be a help button where mentors should be available because we have tons of questions after learning a new concept. We cant just type all questions in the discussions forum and then then wait till someone replies and then that question gets lost among the pile of other questions. Especially in programming assignments when we get stuck and then dont have a clue what to do now. For $50 a month, the teaching structure is really poor. Even khan academy has a much better educational structure. and its all free too. I am a college student with a part time job and I am contributing 70% of my earnings towards this course because my future depends on it.

por Md. N H

â€¢30 de jun de 2018

Very good course to start Deep learning. But you need to have the basic idea first. I would suggest to do the Stanford Andrew Ng Machine Learning course first and then take this specialization courses

por oli c

â€¢2 de dez de 2018

Lectures a good. The programming assignments are too simple, with most of the code already written for you, so you only have to add in very similar one-line numpy calculations, or calls of previous helper functions. I would learn more if the programming part was harder.

por Nikolay B

â€¢26 de out de 2017

Course targets very slow learners. Professor repeats same stuff again and again and again, basically for 4 weeks we learn how to calculate the same things (front-back propagations and cost function). Programmings assignments are incredibly easy, all solutions are made by authors, you just write in code what they described in notes. 1-2 lines here and there.

por Okundu O

â€¢21 de out de 2017

Andrew Ng's presenting style is excellent. Makes the course easy to follow as it gradually moves from the basics to more advanced topics, building gradually. Very good starter course on deep learning.

por NicolÃ¡s A G

â€¢5 de dez de 2018

I'm very dissapointed, all what taught here is also on the Andrew Ng's Machine Learning course. The sole difference is that here python is used and that the exercises are extremely easy, you almost have not to think. And even they give an approx of lines of code you have to write which are no more than 4 and if that threshold is surpassed is because you have to copy & paste same thing with different variables names.

por Stanislav T

â€¢7 de jul de 2018

I think the course explains the underlying concepts well and even if you are already familiar with deep neural networks it's a great complementary course for any pieces you may have missed previously.

por Martin P

â€¢11 de ago de 2018

too easy to pass (the code needed for the assignments is even presented during the lecture)

the lectures itself are like "deep learning for dummies", everything is repeated multiple times

por Sundar S

â€¢27 de nov de 2017

Fantastic introduction to deep NNs starting from the shallow case of logistic regression and generalizing across multiple layers. The material is very well structured and Dr. Ng is an amazing teacher.

por Brandon C

â€¢4 de dez de 2018

Extremely helpful review of the basics, rooted in mathematics, but not overly cumbersome. Very clear, and example coding exercises greatly improved my understanding of the importance of vectorization.

por Anil L G

â€¢7 de mar de 2019

I understand all those thing which you have discussed in this course and I also like the way first tell story of concet and assign assignment. Now I fall in love with neural network and deep learning.

por Jonathan C

â€¢24 de mar de 2019

The lectures and assignments are extremely shallow, unengaging and poorly edited and recorded. Andrew Ng is riding the waves of the popularity of his ML course. I regret every dollar and minute I wasted on this crap. DON'T ENROLL DO YOURSELF A FAVOR GO READ A BOOK!

por Leon V

â€¢7 de abr de 2019

A bit easy (python wise) but maybe that's just a reflection of personal experience / practice. The contest is easy to digest (week to week) and the intuitions are well thought of in their explanation.

por Leo L

â€¢27 de ago de 2017

This is a very good course for people who want to get started with neural networks. Andrew did a great job explaining the math behind the scenes. Assignments are well-designed too. Highly recommended.

por A H

â€¢30 de abr de 2020

Amazing course, the lecturer breaks makes it very simple and quizzes, assignments were very helpful to ensure your understanding of the content. Hope for future learners you provide code model-answers

por Sergey G

â€¢15 de jul de 2019

Dear Andrew! Thank you so very much for making me belive in myself as a machine learning engineer. Your lectures & excercises are like "shoulders of Giants" on which a good student can stand out high.

por Sameer K

â€¢30 de ago de 2018

Nothing can get better than this course from Professor Andrew Ng. A must for every Data science enthusiast. Gets you up to speed right from the fundamentals. Thanks a lot for Prof Andrew and his team.

por Wu Y

â€¢26 de jun de 2018

Really, really good course. Especially the tips of avoiding possible bugs due to shapes. Also impressed by the heroes' stories. Genuinely inspired and thoughtfully educated by Professor Ng. Thank you!

por Juan P

â€¢12 de fev de 2018

I would love some pointers to additional references for each video. Also, the instructor keeps saying that the math behind backprop is hard. What about an optional video with that? Otherwise, awesome!

por Alan S

â€¢28 de out de 2017

This course was a hot mess. Andrew Ng seemed to lose his train of thought in some of the lectures, and he would repeat himself and just say nonsense sometimes. There were a bunch of errors in the quizzes and the assignments were confusing at times. On the whole, this was not up the the standard of Andrew Ng's old ML class. I did continue with this series of courses anyway, and I noticed a marked improvement in the quality of the second course, so its possible that they cleaned up the first one in the time since I took it.

por E A

â€¢14 de abr de 2019

What a great course. I was expecting this to be more of an introduction to using Tensorflow and high level introduction to neural networks. Instead it is an incredibly well explained introduction to how to build your own neural network (in python) and implement it on some sample data. This really gives you a good grounding in what a neural network is doing (at least implementation wise) and a good foundation to build on. I am sure later courses in the specialization cover use of Tensorflow (maybe keras?) but I can see how this course enables you to understand what is going on under the hood of all these toolsets. He has a great ability to explain what could be very complicated ideas simply and layout what could be convoluted coding sequences in a very well organised and concise manner. I will recommenced this course to anyone starting out with either the intention to go into data science (using algorithms) or machine learning (building your own algorithms).

por Anna B A

â€¢2 de set de 2019

I highly appreciated the interviews at the end of some weeks. I am currently trying to transition from a research background in Systems/Computational Biology to work professionally in deep learning :)

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