學生對 洛桑联邦理工学院 提供的 Big Data Analysis with Scala and Spark 的評價和反饋
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BP
Nov 29, 2019
Excellent overview of Spark, including exercises that solidify what you learn during the lectures. The development environment setup tutorials were also very helpful, as I had not yet worked with sbt.
CC
Jun 08, 2017
The sessions where clearly explained and focused. Some of the exercises contained slightly confusing hints and information, but I'm sure those mistakes will be ironed out in future iterations. Thanks!
401 - Big Data Analysis with Scala and Spark 的 406 個評論（共 406 個）
創建者 Mikołaj J
•Jun 05, 2017
So many mistakes in the slides. Coding exercises are so hard to comprehend, it's tough to know what you are trying to achieve. I have already done a course in spark, this was supposed to be just refresher, but now I'm just confused...
創建者 José F
•Apr 18, 2017
a let down and not up to par with other courses in the series.
Huge amount of time is wasted bsically repeating that the API is close to scala collections'. The huge amout of time is wasted again on very simple dataframe APIs including several slides presenting the show() function. Allow me to repeat : several slides presenting the show() function.
Finally the assignments are unimaginative and mechanical. The desciption is really confuse and most of the time is spend trying to chase small differences away to please the grader.
The sole part of the course that seemed interesting was the shuffling one, that was unfourtunately ignored on the assignments
Not related to the course but to spark: What utter mess are dataframes and datasets filled with boilerplate type conversions and runtime erros. I shy away in disgust form this untyped IDE-unfriendly monstruosity.
創建者 Bulat S
•May 19, 2018
The course is too basic.
創建者 Марко И
•Apr 10, 2017
I don't know what happened but it seems they had technical or some other problem while preparing this course. Some assignments were more oriented to solving marginal problems then using Spark and distributed and parallel computing. And that is really annoying. Previous 3 courses were great, maybe this one will improve.
創建者 Sergio R P
•Sep 30, 2019
The assignments are very confusing and unexplained. They do not take long to reply to the forum.
創建者 Dan O
•Mar 25, 2017
Slow videos repeating several times the same thing (not a pedagogical / "good to fix an idea" kind of repetition), which makes them hard to follow.
However the worst are the exercises: the first time after 3-4 other Coursera Scala related courses where I have to actively check the forums for minute details about what is expected / implied for the solutions to pass the grading.
Things like what to do when updating the kmeans and you have duplicates, subtle differences between average and mean, etc. ...
In all other courses the expectation of the exercises were sufficiently clear and straight forward that I never had to check the forums to solve them.
Also, the code style of the exercises is literally an anti-pattern in idiomatic Scala, against everything learnt in the previous Scala courses: "var" all over the place, low level loops like in C or Java, etc. ...
