46 Questions on SQL to test a data science professional (Skilltest Solution)
Introduction If there is one language every data science professional should know – it is SQL. SQL stands for Structured Query Language. It …
45 questions to test a Data Scientist on Regression (Skill test – Regression Solution)
Introduction Regression is much more than just linear and logistic regression. It includes many techniques for modeling and analyzing several variables. This skill test …
Solutions for Skilltest Machine Learning : Revealed
Introduction Automation and Intelligence has always been a driving force for technological advancements. Techniques like machine learning enable these advancements in every domain possible. …
Complete Guide on DataFrame Operations in PySpark
Back to ArticleInterview Questions Overview Learn about DataFrames on the PySpark API DataFrames are a handy data structure for storing petabytes of data PySpark …
Using PySpark to perform Transformations and Actions on RDD
Introduction In my previous article, I introduced you to the basics of Apache Spark, different data representations (RDD / DataFrame / Dataset) and basics …
Comprehensive Introduction to Apache Spark, RDDs & Dataframes (using PySpark)
Introduction Industry estimates that we are creating more than 2.5 Quintillion bytes of data every year. Think of it for a moment – 1 Qunitillion …
