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Вернуться к Сбор и сортировка данных

Отзывы учащихся о курсе Сбор и сортировка данных от партнера Университет Джонса Хопкинса

4.5
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Оценки: 7,923
Рецензии: 1,310

О курсе

Before you can work with data you have to get some. This course will cover the basic ways that data can be obtained. The course will cover obtaining data from the web, from APIs, from databases and from colleagues in various formats. It will also cover the basics of data cleaning and how to make data “tidy”. Tidy data dramatically speed downstream data analysis tasks. The course will also cover the components of a complete data set including raw data, processing instructions, codebooks, and processed data. The course will cover the basics needed for collecting, cleaning, and sharing data....

Лучшие рецензии

HS

2 мая 2020 г.

This course provides an introduction of some important concepts and tools on a very important aspect of data science: cleaning and organizing data before any analysis. A must for any data scientist.

BE

25 окт. 2016 г.

This course is really a challenging and compulsory for any one who wants to be a data scientist or working in any sort of data. It teaches you how to make very palatable data-set fro ma messy data.

Фильтр по:

1126–1150 из 1,273 отзывов о курсе Сбор и сортировка данных

автор: András H

4 мар. 2018 г.

This is an important course, but many updates will be needed. There are only a few exercise task, there could be more. The swirl part of the course is good.

автор: Andrew C

20 сент. 2016 г.

The best course so far (though that's not saying much). This course would be better as a follow up to an example workflow showing an end to end analysis.

автор: Amir A S

8 мар. 2020 г.

Not on par with the course sets before it, could have been a bit more explaining as cleaning data is one of the most important parts of data science.

автор: Ranto R

6 июля 2020 г.

The content of the course is very interesting and useful. However, I found very challenging the difference between lectures and quizzes/assignements

автор: Bijan S

30 янв. 2016 г.

The selection of topics is great. However, the course is too abstract. I think some of the materials deserve to be discussed more comprehensively.

автор: Paymon H

14 апр. 2016 г.

Toughest class in the offering. There really could've been 2 classes for cleaning data. I struggled with the lecturer's style (spoke too fast).

автор: nicolas r

15 сент. 2021 г.

S​ome assessments are not well related with topics developed during classes. Then, it is difficult to understand what it is the goal to achieve.

автор: Daniel D

3 сент. 2019 г.

The project description could have been a lot more descriptive for what we were supposed to do. Otherwise, I had a lot of fun with this section.

автор: Teodor I

9 янв. 2018 г.

The non-clickable links in the pdf are a major problem. You need to figure it out. Create a link reference field for each video or something.

автор: Nishi G

27 апр. 2017 г.

To get value from the class, I used other on-line materials to understand the topic. Thus, I spent about 20 hours/week on this class.

автор: Paul M

15 мая 2018 г.

I felt I had to teach myself in this course. I feel I would have had the same learning experience if I had purchased a good R book.

автор: Richard C

10 мая 2018 г.

A lot of things covered in this course in a short time. Probably should have been 8 weeks with more homework done step by step.

автор: Siarhei K

16 мар. 2021 г.

great materials but unrelated to assignments. great real life experience "here is link. make it nice. deadline yesterday"

автор: Diana L G

18 мая 2020 г.

Sometimes I felt the were not evaluating my learning or ability to do things but my ability to read instructor's mind.

автор: Hassan D

17 апр. 2020 г.

it gives us good information, but the information sometimes are incomplete or need to be updated( created in 2014!)

автор: Archana R

31 авг. 2016 г.

good course. but some concepts are hard to understand for newbies. so felt it was a bit advanced in parts.

автор: Angel_Eyes E

3 дек. 2021 г.

course material was not clear and precise ..wish it was more explanatory to get our concepts more clear

автор: Sudarshan C

1 мар. 2016 г.

The materiel covered in the course was great, but more assignments instead of quizzes should be added.

автор: John G

23 февр. 2017 г.

Materials (video and written) only partially prepare the student for the quizzes and course projects.

автор: Lam C M

19 мар. 2018 г.

Not as clear and straightforward as R Programming. But definitely a worthwhile course to look at.

автор: teena g

9 февр. 2018 г.

While the available content is good, I expected this course to take me to a more detailed level.

автор: Felix R

31 янв. 2019 г.

Ups and Downs.

Some presented functions are deprecated according to official documentation...

автор: Mohammadreza A

20 дек. 2020 г.

Course project was really vague and it took me 3 days to understand what is really wanted

автор: Brandon W

11 авг. 2020 г.

The lessons are good, but they do not prepare you for the tests or end-of-course project.

автор: Nathan H

17 сент. 2018 г.

The assignments required A LOT of help outside the information provided in the lectures.