94% Perfect: the Surprising Solution to the $200 Billion Inventory Problem

Did you know? Just in the United States, there are over $2 TRILLION worth of inventories, with more than $1.40 of stock for every $1 in sales.

Building Knowledge Graphs from Structured Sources

Knowledge Graphs (KGs) are labeled and directed multigraphs that encode information in the form of entities and relations relevant to a specific domain or organization. KGs are effective tools for…

Self-Training for Natural Language Understanding

This article will explain an exciting development in Natural Language Processing. The paper presents a Semi-Supervised Learning algorithm that significantly improves RoBERTa’s performance with…

Do You Struggle With The Quantum Superposition?

A classical bit can be either 0 or 1. A quantum bit (called a qubit), by contrast, can be in a state of superposition. The quantum superposition is a linear combination of 0 and 1. But the qubit can…

Useful pandas functions you probably did not know

Pandas library is probably the most popular package for performing data analysis with python. There are a lot of tutorials that go through pandas basic functions but in this article, I would like to…

Should employees be promoted at random? Data says: “IDK, maybe?”

The controversial quote above is from a semi-satirical book, by Dr. Peter and Raymond Hull, which since its release triggered quite a bit of research on the topic. The idea behind it is that, as…

Develop Text into WordCloud in Python

Word clouds or tag clouds are graphical representations of word frequency that give greater prominence to words that appear more frequently in a source text. The larger the word in the visual the…

Getting Started with Microsoft Excel

Learn the basics of Excel functions, including Pivots, Text to Columns, Removing Duplicates, Concatenating fields and using conditional logic.

Truth = Utility

With the rise of deep-fakes, lying politicians, and Surkovian disinformation campaigns, it’s hard to get a handle on what truth even is. For a few months I was deep in a skeptical hole where I had…

What is a P-value?

This series is based on the Data Science Specialization offered by John Hopkins University on Coursera. The articles in this series are notes based on the course, with additional research and topics…