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学生对 University of Alberta 提供的 Sample-based Learning Methods 的评价和反馈

4.8
1,253 个评分

课程概述

In this course, you will learn about several algorithms that can learn near optimal policies based on trial and error interaction with the environment---learning from the agent’s own experience. Learning from actual experience is striking because it requires no prior knowledge of the environment’s dynamics, yet can still attain optimal behavior. We will cover intuitively simple but powerful Monte Carlo methods, and temporal difference learning methods including Q-learning. We will wrap up this course investigating how we can get the best of both worlds: algorithms that can combine model-based planning (similar to dynamic programming) and temporal difference updates to radically accelerate learning. By the end of this course you will be able to: - Understand Temporal-Difference learning and Monte Carlo as two strategies for estimating value functions from sampled experience - Understand the importance of exploration, when using sampled experience rather than dynamic programming sweeps within a model - Understand the connections between Monte Carlo and Dynamic Programming and TD. - Implement and apply the TD algorithm, for estimating value functions - Implement and apply Expected Sarsa and Q-learning (two TD methods for control) - Understand the difference between on-policy and off-policy control - Understand planning with simulated experience (as opposed to classic planning strategies) - Implement a model-based approach to RL, called Dyna, which uses simulated experience - Conduct an empirical study to see the improvements in sample efficiency when using Dyna...

热门审阅

DP

Feb 14, 2021

Excellent course that naturally extends the first specialization course. The application examples in programming are very good and I loved how RL gets closer and closer to how a living being thinks.

DC

Aug 23, 2020

The material discussed is very clear, and the graded quizzes and programming assignments force you to really understand what you have just heard. I enjoyed this course a lot, and learned even more.

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201 - Sample-based Learning Methods 的 225 个评论(共 244 个)

创建者 Muhammed A Ç

Aug 10, 2021

Programming assignments are not as good as andrew ng's courses. But still they are good enough to help you understand the concepts better by coding them

创建者 Bruno L

May 21, 2020

The lectures and quiz tests are perfect. Jupyter. Programming exercises can be a little confusing sometimes but are also great. A great course, overall.

创建者 Navid H

Oct 16, 2019

definitely interesting subjects, but I do not like the teaching method. Very mechanic and dull, with not enough connection to the real world

创建者 bhargav p

Jun 30, 2020

Everything is great overall but It would be more better if DynaQ & DynaQ+ were explained more detail in the lecture instead of assignment.

创建者 Tri W G

Mar 20, 2020

Pretty clear explanations! Nice starting point if you want to deep dive into RL. It gives clear picture over some confusing terms in RL.

创建者 Kutlu E Y

Oct 30, 2022

Excellent course with excellent materials, but definitely not for the uninitiated. This prereq should have been clearly mentioned.

创建者 LI C Y

Jun 14, 2022

Assignment is a bit hard, expecially the last assignment of Dyna-Q and Dyna-Q+. It would be great if more hints can be provided.

创建者 judson g

Aug 21, 2020

Assignment problems needs to be clearly defined and content of the video needs to updated and expects more information

创建者 Max C

Oct 23, 2019

Some of the programming homeworks were difficult to debug due to the feedback from autograder being unhelpful.

创建者 Raj P

Dec 8, 2020

Would recommend covering more examples to aid the understanding of concepts.

创建者 Hugo T K

Aug 10, 2020

The course is excellent! Only missed some programming assignments on Week 2.

创建者 Nicolas M

Sep 23, 2020

Great course, but some exercises would be better using concrete examples.

创建者 Soren J

Jun 20, 2020

Very good. Although the python skills are quite high to pass this course.

创建者 Yu G

Jan 21, 2021

Tough, challenging course, very worthwhile taking!

创建者 Yasaman C

Jul 7, 2023

Good

创建者 italo a d s o

Jan 7, 2022

good

创建者 Sachin K

Aug 17, 2020

Passing notebook assignments is hellish due to strict decimal matching for numerical computations. You must do steps in one specific order or the assignments in autograder comparisons won't work. The course is itself fine and is more or less a rehash of the book so you may as well read that. There is no special intuition but the notebooks do provide a good experimental design strategy. Many of the experiments listed in the book are actually implemented in assignments which aids in learning. There is no technical support staff on Coursera anymore. So you are on your own when taking the course. Discussions forums are littered with discussion prompts and new ones are added every week so its not easy to find anything in there. Coursera has become substandard and the rating reflects a mixture of the course and coursera as a platform.

创建者 Mark L

Jul 1, 2020

This course has presented a large number of techniques/algorithms in addition to the ones presented in the first course. I find it hard to keep track of these. It would be most helpful if the techniques could be summarized in a table to lists the various attributes. In addition, I would like to see some examples of practical problems that can be solved with these techniques in addition to the explanatory "toy" problems. I also find the pace of the lectures a little "choppy", with a lot of very small lectures, each with its own introduction and summary.

创建者 Daniel D

Sep 28, 2022

Overall course instruction is good. However, there are serious issues with the programming assignment where the implemented code can be correct but fails the autograder because the random numbers might have been drawn in a different order than when the instructors created the code. These issues need to be fixed but based on the discussion thread (Sample-based Learning Methods - Discussions | Coursera在新标签页中打开) have been present for at least 8 months

创建者 Hadrien H

Dec 13, 2020

Still very good course but I felt like this second unit covers less of the book than the first one. The classes are quite shorter than in the first part while the book content gets richer. The assignments are a bit more complete though

创建者 Mukesh

Sep 11, 2020

There should be more examples on Q-learning and Expected SARSA. The course just compares different algorithms for different parameters. The autograder is annoying too. Really need some work on that. Otherwise the course is okay.

创建者 Alessandro o

Jun 12, 2020

To be honest I think that arguments quite complex are treated too quickly and basically it's up to you to figure it out. I think that some ideas would have been nice to have a more detailed explanation

创建者 Juan A V G

Apr 13, 2021

It is required some mentoring on the Discussion forums. There is some part grading part that requires some improvement and it is too dependent on other students to work around some main issues.

创建者 Ahmed A

Jun 18, 2023

The theory is explained quite well and is understandable. Assignments need to made more clear and users should be allowed more engagement because it just feels like fill in the blanks for now.