500 Most Important Data Science Interview Questions and Answers PDF. I am neither the owner of a famous publishing company nor am a top IT company with hundreds of in-house developers to create anything I wanted to with great ease.
I am an Independent Software developer with a passion for what I do and trust me, a lot of time, and effort was put into creating this extensive collection of questions and answers in a single place. If it helps at least a few in their careers to achieve their dream jobs, I will be more than happy.
Some of the question and answer
Question 1. What Is A Recommender System?
A recommender system is a today widely deployed in multiple fields like movie recommendations, music preferences, social tags, research articles, search queries and so on. The recommender systems work as per collaborative and content-based filtering or by deploying a personality-based approach. This type of system works based on a person’s past behavior in order to build a model for the future. This will predict future product buying, movie viewing, or book reading by people. It also creates a filtering approach using the discrete characteristics of items while recommending additional items.
Question 2. Compare Sas, R, And Python Programming?
SAS: it is one of the most widely used analytics tools used by some of the biggest companies on earth. It has some of the best statistical functions,
the graphical user interface, but can come with a price tag and hence it cannot be readily adopted by smaller enterprises R: The best part about R is that it is an Open Source tool and hence used generously by academia and the research community. It is a robust tool for statistical computation, graphical representation and reporting. Due to its open-source nature it is always being updated with the latest features and then readily available to everybody.
Python: Python is a powerful open-source programming language that is easy to learn, works well with most other tools and technologies. The best part about Python is that it has innumerable libraries and community created modules making it very robust. It has functions for statistical operation, model building, and more.
Also Read:- Web Scraping with Python: Collection from the Modern Web PDF Download
Question 3. Explain The Various Benefits Of R Language?
The R programming language includes a set of a software suite that is used for graphical representation, statistical computing, data manipulation and
calculation. Some of the highlights of R programming environment include the following:
An extensive collection of tools for data analysis
Operators for performing calculations on matrix and array
Data analysis technique for graphical representation
A highly developed yet simple and effective programming language It extensively supports machine learning applications acts as a connecting link between various software, tools and datasets Create high-quality reproducible analysis that is flexible and powerful Provides a robust package ecosystem for diverse needs It is useful when you have to solve a data-oriented problem