Learn how to clean your big dataset in PySpark
Learn how to explore big dataset in PySpark
Learn how to create visualizations from big dataset loaded in PySpark
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.
In a video that plays in a split-screen with your work area, your instructor will walk you through these steps:
Install Spark on Google Colab and load datasets in PySpark
Change column datatype, remove whitespaces and drop duplicates
Remove columns with Null values higher than a threshold
Group, aggregate and create pivot tables
Rename categories and impute missing numeric values
Create visualizations to gather insights
Your workspace is a cloud desktop right in your browser, no download required
In a split-screen video, your instructor guides you step-by-step
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.
Practical walk through of basic PySpark operations. Great quick-start to using Pyspark for data analysis
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