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学生对 Coursera Project Network 提供的 Cleaning and Exploring Big Data using PySpark 的评价和反馈

4.3
40 个评分
10 条评论

课程概述

By the end of this project, you will learn how to clean, explore and visualize big data using PySpark. You will be using an open source dataset containing information on all the water wells in Tanzania. I will teach you various ways to clean and explore your big data in PySpark such as changing column’s data type, renaming categories with low frequency in character columns and imputing missing values in numerical columns. I will also teach you ways to visualize your data by intelligently converting Spark dataframe to Pandas dataframe. Cleaning and exploring big data in PySpark is quite different from Python due to the distributed nature of Spark dataframes. This guided project will dive deep into various ways to clean and explore your data loaded in PySpark. Data preprocessing in big data analysis is a crucial step and one should learn about it before building any big data machine learning model. Note: You should have a Gmail account which you will use to sign into Google Colab. Note: This course works best for learners who are based in the North America region. We’re currently working on providing the same experience in other regions....

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1 - Cleaning and Exploring Big Data using PySpark 的 10 个评论(共 10 个)

创建者 Farzad K

Feb 10, 2021

I was expecting a project on big data and Spark application on that, but it was only on PsSpark syntax. Not a single word on the Spark technology, only coding.

创建者 Venkat C S G

Oct 13, 2020

The project should include more explanation.

创建者 Alexandra A

Aug 22, 2021

Practical walk through of basic PySpark operations. Great quick-start to using Pyspark for data analysis

创建者 Georgete B d P

Feb 9, 2021

Curso rápido e abrangente de fundamentos para utilização do PySpark

创建者 Aruparna M

Jan 31, 2021

Very nice content

创建者 Priscila A B

Apr 5, 2021

Perfect!

创建者 Jorge G

Feb 25, 2021

I do not recommend taking this type of course, take one and pass it, however after a few days I have tried to review the material, and my surprise is that it asks me to pay again to be able to review the material. Of course coursera gives me a small discount for having already paid it previously. It is very easy to download the videos and difficult to get hold of the material, but with ingenuity it is possible. Then I recommend uploading them to YouTube and keeping them private for when they want to consult (they avoid legal problems and can share with friends), then they can request a refund.

创建者 Saket R

Dec 15, 2020

More theory behind the functions used and concepts behind spark and how it works in a distributed way would've been more benefitting. Overall it was a worthy course.

创建者 shweta s

Oct 18, 2021

good

创建者 Dharmendra T

Oct 6, 2020

Overall, it was a good course but I think if some explanations about how things are working, provided then it would have been plus in our learning of data explorations in Spark