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學生對 斯坦福大学 提供的 Graph Search, Shortest Paths, and Data Structures 的評價和反饋

4.8
1,874 個評分
223 條評論

課程概述

The primary topics in this part of the specialization are: data structures (heaps, balanced search trees, hash tables, bloom filters), graph primitives (applications of breadth-first and depth-first search, connectivity, shortest paths), and their applications (ranging from deduplication to social network analysis)....

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DS

2020年3月29日

Awesome course! Professor Roughgarden is fantastic. The material was appropriately challenging. Perfect amount of rigor. Only one minor squabble: the hash problem set is terribly misleading.

OK

2021年10月30日

The course was very interesting. As a person who struggles with problem-solving, I found this course very helpful because the professor's ideas are well explained. It makes me to learn more.

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176 - Graph Search, Shortest Paths, and Data Structures 的 200 個評論(共 221 個)

創建者 Felice F

2020年8月31日

Loved it

創建者 Neo

2019年5月13日

Awesome!

創建者 goldkeytom

2018年1月2日

excelent

創建者 ryan

2017年9月25日

Awesome!

創建者 Yisheng Y

2016年12月1日

Awesome!

創建者 Ahmad e D

2020年11月8日

🔥🔥🔥

創建者 Jingyuan W

2019年11月13日

Great!

創建者 dynasty919

2018年2月20日

nice!

創建者 최정식

2021年10月3日

.

創建者 Sergey T

2020年5月30日

This course was useful to me, thanks. As usual, I liked lectures and programming assignments provided, except for week 4.

I didn't like week 4 materials. It was a huge disappointment to me when the theory about hashing appeared to be too 'theoretical' with absolutely no code at all. It's just some high concept maths and nothing more. It is a real disaster if you are a 'doer' because you'll probably get almost nothing from 4th-week lectures and will be ought to learn about hashing somewhere else. This comes to a question of whether you need to learn hash tables here (and pay your money) or not. So if you have never encountered hash tables in your life, you might want to learn it before you take this course. In that case, consider it as a requirement for your enrollment.

創建者 Christopher E

2019年9月21日

The only reason this is not a 5-star review is because of the Week 4 programming assignment. The point of Week 4 is to demonstrate the usefulness of using a hash table when frequent look-ups are necessary. However, the constants inherent to the assignment problem make the suggested algorithm take anywhere from 30 min to hours. Meanwhile, there is another algorithm that can accomplish the task in mere seconds, but this is not apparent without scouring the message boards for help. I feel it would be better to either rethink the assignment to bring it more in line with the point of the teaching material, or deliver some instruction on the actually useful algorithm, which is fascinating in its own right.

Otherwise, this course is excellent as usual.

創建者 Gonzalo G A E

2020年4月21日

In general, the specialization is great (it's challenging, full of interesting material, and the Prof. is interesting yet light to watch for hours in video). However, two of the programming exercises in this course seemed required solutions that were not related to the covered topics and for which the week's material provided sub-optimal (hence ultra slow) solutions. That was a bit frustrating. Nonetheless, it forced me to explore more about the algorithms, data structures and other solutions.

Still a great and challenging course!

創建者 Sivaramakrishnan S

2020年5月11日

Algorithms part of the course was phenomenal as always. But the Data Structure side of the course was (a bit of shuffling around the point?) little less engaging. I realize that DS is as important as Algorithms but is certainly not as fun to teach as Algorithms. Maybe the assignments and Quizzes could be restructured to make DS lessons more engaging. Just my 2 cents, otherwise Prof. Tim was cool as always!

創建者 Ahmad B E

2017年6月2日

Great course for computer scientists. It is easy to understand but it takes too much time to be completed. The video lectures were long and full of too much explanation. And the week 4 programming assignment took very long running time to complete using the algorithm specified in the course but less time using other algorithms.

創建者 Li-Pu C

2020年5月27日

I would say it would be a little bit too hard for people that do not major in computer science, and programmed less before.

Even though the professor gives the lecture well, but the input size of the text file is often too large. I think it'd be better to provide the assignment easier.

創建者 Bianca D

2019年2月23日

Great course; especially on Data Structures and when certain ones are appropriate. I do wish the final exam solutions would be posted after completing the exam successfully in the same way the problem set solutions, hints and comments are provided.

創建者 Jingxuan W

2019年8月24日

the later graph algorithms are implemented rather cursory. It is quite hard for us to implement it at home using a "big idea" as given in the video. I wish the instructor could give us some intuitions of how Java, C++, or Python handle the case.

創建者 Nikola G

2018年7月25日

Great course but needs restructuring. The videos of how an algorithm works come after extensive discussion on what its action's running times are. If this were flipped and we learned how it works before running times it would be more intuitive.

創建者 Marcus H

2017年10月19日

Great course! The programming assignment for Week 4 was a bit demoralizing, though. I am very certain I had the right answer, but had to implement another solution that did not involve Hash Tables in order for it to process in < 24 hours.

創建者 Georgios K

2019年12月29日

Great course, the first exercise was a little bit hard but the material is useful, if you read the relevant book then the course is even easier.

Last I want to mention that writing the code in Python makes the course easier.

創建者 Sai R

2016年12月11日

The material was a little light and far fewer video quiz questions to test our understanding of the material. I also tried to test myself on BFS and DFS by doing online quizzes like geeksforgeeks - bombed really hard.

創建者 L H

2021年3月2日

There is very little hand-holding in this course and no code provided. This really challenges you to implement the ideas taught in the most efficient and appropriate manner possible.

創建者 Garrett M

2018年5月22日

assignments didn't seem as interesting or complex as class 1, besides week 1 of class 2. Lecture material was high quality however, and the advanced optional material is appreciated

創建者 Songmao L

2019年11月3日

Hope the professor could teach more about hashing and give a detailed implementation of some data structures or supply some interface template code.

創建者 Hao W

2021年3月23日

The first programming assignment is most challenging, while the rest are easier. I expect the assignments are designed in a more consistent way.