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Cleaning and Exploring Big Data using PySpark(으)로 돌아가기

Coursera Project Network의 Cleaning and Exploring Big Data using PySpark 학습자 리뷰 및 피드백

59개의 평가

강좌 소개

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....

최상위 리뷰

필터링 기준:

Cleaning and Exploring Big Data using PySpark의 15개 리뷰 중 1~15

교육 기관: Farzad K

2021년 2월 10일

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.

교육 기관: Venkat C S G

2020년 10월 13일

The project should include more explanation.

교육 기관: Alexandra A

2021년 8월 22일

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

교육 기관: Georgete B d P

2021년 2월 9일

Curso rápido e abrangente de fundamentos para utilização do PySpark

교육 기관: Aruparna M

2021년 1월 31일

Very nice content

교육 기관: Pris A

2021년 4월 5일


교육 기관: Jorge G

2021년 2월 25일

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.

교육 기관: Saket R

2020년 12월 15일

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.

교육 기관: nawaz

2022년 4월 23일

use case could be explained a little better, before actually going to the code

교육 기관: Juan C A

2022년 3월 24일

fast and simple explanation about ow to start to work with Spak on Colab

교육 기관: shweta s

2021년 10월 18일


교육 기관: Jeremy S

2022년 1월 23일

This course uses the Coursera in-browser notebook processer, Rhyme, rather than Google Colab, Python, or Anaconda. If you want to use Pyspark on your home computer or work computer, this tutorial will not show you how to get there. You will need to seek out those instructions separately and install Python/Java/Spark yourself. The instructor demonstrates quite a few functions and methods that will help you to get started with Pyspark, though he does not go into much depth about any of them. You will understand the statements and operations in this course much better if you have a solid understanding of Python, and at least a basic understanding of SQL commands. In my opinion, this course was worth the $10 I paid.

교육 기관: Dharmendra T

2020년 10월 6일

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

교육 기관: Zhilin Z

2022년 11월 17일

For many codes, the teacher just wrote the codes, without any explanations to why he wrote in that way, without any explanation to what's the goal of a code. There are many one-line codes which are very very long. They are not easy to understand due to little explanation.

교육 기관: Elizabeth M

2022년 11월 14일

In the sreen where we must practice, the libraries are not working.