Paul Apivat Data Journey

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How Positive are Your Facebook Posts?

Jan 29, 202116 min read

Rule-based Sentiment Analysis Using Python and R Overview Why Sentiment Analysis? NLP is subfield of linguistic, computer science and artificial intelligence (wiki), and you could spend years studying it. However, I wanted a quick dive to a get an i...

Quickly Analyze Relationships in your Twitter Data

Jan 16, 20216 min read

Overview & Setup This post uses various R libraries and functions to help you explore your Twitter Analytics Data. The first thing to do is download data from analytics.twitter.com. The assumption here is that you're already a Twitter user and have b...

Grasping Gradient Descent using Python

Dec 26, 202015 min read

Photo by Fineas Anton on Unsplash Overview In this post, we'll explore Gradient Descent from the ground up starting conceptually, then using code to build up our intuition brick by brick. While this post is part of an ongoing series where I document...

Exploring nested data with sunburst plots in R

Dec 18, 20206 min read

Overview This is a quick walk through of using the sunburstR package to create sunburst plots in R. The original document is written in RMarkdown, which is an interactive version of markdown. The following code can be run in RMarkdown or an R script...

Explore Hypothesis Testing using Python

Dec 16, 202025 min read

Cover Photo by Nasonov Aleksandr on Unsplash Overview This is a continuation of my progress through Data Science from Scratch by Joel Grus. We'll use a classic coin-flipping example in this post because it is simple to illustrate with both concept an...

Permutation in Python

Dec 10, 202010 min read

Cover Credit Overview Itertools are a core set of fast, memory efficient tools for creating iterators for efficient looping (read the documentation here). Itertools Permutations One (of many) uses for itertools is to create a permutations() function...