Machine Learning

Sentiment Analysis Series 1 (15-min reading)


What is Sentiment Analysis?

Sentiment analysis (also known as opinion mining or emotion AI) is essentially the process of determining the emotional tone behind a series of words, used to gain an understanding of the attitudes, opinions, and emotions expressed within an online mention.

Why should I care about it?

The applications of sentiment analysis are endless and extremely powerful!

The Obama administration used sentiment analysis to gauge public opinion to policy announcements and campaign messages ahead of 2012 presidential election.

Companies monitor social media to track customer reviews, survey responses, competitors. Finance industry uses it to predict stock … Read the rest

Life coaching

Minimalist lifestyle is beneficial for these 8 types of people

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What is minimalist lifestyle again? It’s simple: intentionally living a life with only things that are necessary. The term “minimalist” & “ minimalism” has been growing exponentially in the past 5 years. It’s simply because more people are aware that minimalist lifestyle can bring us more joys.

Minimalist lifestyle doesn’t fit every single human, however, if you belong to following 8 types of people. You should totally consider trying out minimalist lifestyle, or minimalism.  

Type 1: Deal hunter.
When you see big sales, you can’t let the deals slip away as you feel obligated to buy before the price goes … Read the rest

Growth hacking

Two mistakes I made from A/B testing



A/B tests are extremely common, and their general concept is simple. However, as I’ve used this method more and more, things get more and more complicated. I wrote this article to talk about two mistakes I made along the way when running A/B tests.  

Mistake 1. I didn’t estimate a test’s duration.

Reality: Estimating a test’s duration helps you use resources better

I still remember the very first AB test that I ran. It got a lot of attention from my company, and I often got this question “how long should we run this test for”. For a while, Read the rest

about me


  • Enturenpernuer, Data Geek, Life-long learner, Minimalist.   
  • Graduated from Virginia Tech engineering school. Couldn’t be more proud!
  • Started my own company in college, It’s a platform to connect college talents to the real world.
  • I  focus on data science now. 


Email: xikai.vt AT Gmail DOT com… Read the rest