Data Wrangling: What, How and Why

Gramener’s CEO Anand and Senior Data Scientist Kathirmani along with the Upgrad team are run­ning a work­shop this Sunday (23 Oct, 11:30am) at Koramangala, Bangalore. The top­ic is “Data Wrangling – What, How and Why?”

Gramener's CEO Anand and Senior Data Scientist Kathirmani


Over 90% of data sci­ence is about clean­ing data – the pro­cess of load­ing, cor­rect­ing and pre­par­ing the data for ana­lys­is. This is a te­di­ous pro­cess. But what does it in­volve? What are the tricks of the trade? What tools and tech­niques make this easi­er?

Data is messy. (What a surpriise)
Data is messy. (If it sur­prises you, your ca­reer will be messy.)

Once we have the data ready, the toughest part is ask­ing the right ques­tions. Exploratory data ana­lys­is is about play­ing with data­sets in a struc­tured way to ex­tract as many of the im­port­ant in­sights as pos­sible in a given time. What are ef­fect­ive EDA tech­niques? Is there a struc­ture to this?

This talk is ideal for people in­ter­ested in learn­ing about data ana­lys­is, as well as ana­lysts who are look­ing to im­prove their data wrangling skills. Join us!

To be, or not to be – and other questions


Today’s post mil­len­ni­al gen­er­a­tion doesn’t waste time mulling over some­thing. Why give your brain a workout when all of the world’s opin­ion for the most trivi­al, non­sensic­al query to the most hy­po­thet­ic­al and everything in between is a ‘search’ away. Here’s a look at some of the pop­ular ‘Should I…’ ques­tions Indians have been ask­ing on Google. The most pop­ular ‘Should I’ ques­tions in the India re­gion have been mostly re­lated to tech­no­logy & gad­gets – ‘Should I re­move it?’ (Software), ‘Should I buy IPhone 5s’, ‘Should I up­grade to Windows 10’, ‘Should I up­date to iOS 9’ and so on.

There are also un­happy em­ploy­ees seek­ing the wis­dom of the crowd ask­ing ‘Should I quit my job?’ and you also have the strange ones – ‘Should I marry him?’, ‘Should I carry an um­brel­la today?’ Or how about this pop­ular one? – ‘Should I die?’ One can only hope the search res­ults for this one on page 1 of­fer some sens­ible ad­vice. Pity Hamlet didn’t know about – it could have saved the Prince of Denmark a som­bre so­li­lo­quy.


To see what else the world is search­ing for head out here.

You search for that on Google? Really?


Two dec­ades ago you had to travel 5 kms to the loc­al lib­rary in a crowded bus to fish for books as large as ce­ment slabs to find out if Shakespeare really wro­te his plays. After read­ing through 100 pages of the 500 page book you would re­turn home with a para­graph worth of ‘re­search ma­ter­i­al’.

Today even be­fore you get ac­cess to mil­lions of re­cords await­ing you, as you start typ­ing out on Google ‘Did Shakespeare really write …’ auto­com­plete sug­gests few oth­er pop­ular re­lated searches in your re­gion. These auto­com­plete sug­ges­tions them­selves are a hint to the ‘school of thought’ that ex­ists around your search cri­ter­ia.


Head out to for more ad­ven­tures.