“Data Scientist - The Sexiest Job of 21st Century.”- Harvard Business Review
If you are already into a big data related career then you must already be familiar with the set of big data skills that you need to master to grab the sexiest job of 21st century. With every industry generating massive amounts of data – the need to crunch data requires more powerful and sophisticated programming tools like Python and R language. Python and R are among the popular programming languages that a data scientist must know to pursue a lucrative career in data science.
Python is popular as a general purpose web programming language whereas R is popular for its great features for data visualization as it was particularly developed for statistical computing. At DeZyre, our career counsellors often get questions from prospective students as to what should they learn first Python programming or R programming. If you are unsure on which programming language to learn first then you are on the right page.
Python and R language top the list of basic tools for statistical computing among the set of data scientist skills. Data scientists often debate on the fact that which one is more valuable R programming or Python programming, however both the programming languages have their specialized key features complementing each other.
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Data science consists of several interrelated but different activities such as computing statistics, building predictive models, accessing and manipulating data, building explanatory models, data visualizations, integrating models into production systems and much more on data. Python programming provides data scientists with a set of libraries that helps them perform all these operations on data.
Python is a general purpose multi-paradigm programming language for data science that has gained wide popularity-because of its syntax simplicity and operability on different eco-systems. Python programming can help programmers play with data by allowing them to do anything they need with data - data munging, data wrangling, website scraping, web application building, data engineering and more. Python language makes it easy for programmers to write maintainable, large scale robust code.
"Python programming has been an important part of Google since the beginning, and remains so as the system grows and evolves. Today dozens of Google engineers use Python language, and we're looking for more people with skills in this language." – said Peter Norvig, Director at Google.
Unlike R language, Python language does not have in-built packages but it has support for libraries like Scikit, Numpy, Pandas, Scipy and Seaborn that data scientists can use to perform useful statistical and machine learningtasks. Python programming is similar to pseudo code and makes sense immediately just like English language. The expressions and characters used in the code can be mathematical, however, the logic can be easily adhered from the code.
"In Python programming, everything is an object. It’s possible to write applications in Python language using several programming paradigms, but it does make for writing very clear and understandable object-oriented code."- said Brian Curtin, member of Python Software Foundation
The public package index for Python language popularly known as PyPi has approximately 40K add-ons available listed under 300 different categories. So, if a developer or a data scientist has to do something with Python language then there is high probability that someone already has it and they need not begin from the scratch. Python programming is used extensively for various tasks ranging from CGI and web development, system testing and automation, and ETL to gaming.
Developers these days spend lot of time in defining and processing big data. With the increasing amount of data that needs to be processed, it becomes extremely important for programmers to efficiently manage the in-memory usage. Python language has generators both from functions and also as expressions which helps in iterative processing i.e. one item at a time. When there are large number of processes to be applied to a set of data in that case generators in Python language prove to be great advantage as they grab the source data ,one item at a time and then pass through the entire processing chain.
The generator based migration tool collective.transmogrifier helps make complex and interdependent updates to the data as it is being processed from the old site and then allows the programmers to create and store objects in constant memory at the new site.The transmogrifier plays vital role in Python programming when dealing with larger data sets.
Python language has gained wide popularity as the syntax is clear and readable making it easy to learn under expert guidance. Data scientists can gain expertise knowledge and master programming with Python in scientific computing by taking industry expert oriented Python programming courses. The readability of the syntax makes it easier for other peer programmers update already written Python programs at a faster pace and also helps write new programs quickly.
i. Cocos2d-A popular open source 2D gaming framework
ii.Mercurial- A popular cross-platform, distributed code revision control tool used by developers.
iii.Bit Torrent- File sharing software
iv.Reddit- Entertainment and Social News website.
Millions of data scientists and statisticians use R programming to get away with challenging problems related to statistical computing and quantitative marketing. R language has become an essential tool for finance and business analytics-driven organizations like LinkedIn, Twitter, Bank of America, Facebook and Google.
R is an open source programming language and environment for statistical computing and graphics available on Linux, Windows and Mac. R language has an innovative package system that allows developers to extend the functionality to new heights by providing cross-platform distribution and testing of data and code. With more than 5K publicly released packages available for download, it is just a great programming language for exploratory data analysis language can easily be integrated with other object oriented programming languages like C, C++ and Java. R language has array-oriented syntax making it easier for programmers to translate math to code, in particular for professionals with minimal programming background.
1.R language is one of the best tools for data scientists in the world of data visualization. It virtually has everything that a data scientist needs- statistical models, data manipulation and visualization charts.
2.Data scientists can create unique and beautiful data visualizations with R language that go far beyond the out-dated line plots and bar charts. With R programming, data scientists can draw meaningful insights from data in multiple dimensions using 3D surfaces and multi-panel charts. The Economist and The New York Times exploit the custom charting capabilities of R programming to create stunning infographics.
3.One great feature of R programming is its reproducible research-the code and data can be given to an interested third party which can trace it back to reproduce the same results. Thus, data scientists need to write code that will extract the data, analyse it and generate a HTML, PDF or a PPT for reporting. When any other third party is interested, the original author can share the code and data with the third party for reproducing similar results.
4.R language is designed particularly for data analysis with a flexibility to mix and match various statistical and predictive models for best possible outcomes. R programming scripts can further be automated with ease to promote production deployments and reproducible research.
5.R language has rich community of approximately 2 million users and close to 1000’s of developers that draws talents of data scientists spread across the world. The community has packages widespread across actuarial analysis, finance, machine learning, web technologies,pharmaceuticals that can be of great help to predict component failure times, analyse genomic sequences, and optimize portfolios. All these resources created by experts in various domains can be accessed easily for free, online.
Learn Data Science in R programming to win the hiring war for Data Scientists!
There are certain strategies that will help professionals decide their call of action on whether to begin learning data science with Python language or with R language –
Having understood briefly about Python language and R language, the bottom line here is that it is difficult to choose learning any one language first -Python or R to crack data scientist jobs in top big data companies. Each one has its own advantages and disadvantages based on the different scenarios and tasks to be performed. Thus, the best solution is to make a smart move based on the above listed strategies and decide which language you should learn first that will fetch you a job with big data scientist salary and later add onto your skill set by learning the other language.