Tag: Ratio

Mastering Imbalanced NLP Datasets

Natural Language Processing (NLP) has found applications in various domains, including sentiment analysis, chatbots, and content moderation. One common challenge in NLP projects is dealing with imbalanced datasets, where one class of data significantly outnumbers the other. In this blog, we’ll...

The 10:1 Managerial Ratio

I got it from this post by my man Art Petty, where he talks about being a hyper-rooster manager. What’s a hyper-rooster? Glad you asked: These over-caffeinated and self-anointed drivers of productivity falsely believe that constant pushing and oversight followed by more pushi...

Estimating the Gender Ratio of AI Researchers Around the World

Anyone in the industry or going to prominent Artificial Intelligence conferences can tell you that a gender imbalance exists, but we felt more rigorous research was important to drive the conversation forward and accelerate correcting this imbalance. As a follow up to The Global AI Talent Pool ...

The Golden Ratio — Hidden in Plain Sight

There are many ways to do it, most involving trigonometry with angles of size 36°, 54° or 72°. One such method is shown below, where I finally fumbled my way to work out an expression for the ratio between the two pentagons’ side lengths: 2tan(54°)cos(54°). The workin...

Is Your Sharpe Ratio Lying to You? Meet the Probabilistic Sharpe Ratio

In the last article we explained the downfalls of relying on the Central Limit Theorem (CLT) and using the mean and standard deviation to calculate a point estimate of the Sharpe Ratio. Today, we’ll again be disussing the revered Sharpe Ratio (SR), the metric that has been widely used ...

How to Size For Online Experiments With Ratio Metrics

Expedia Group™, as a global online travel solution provider, heavily relies on A/B testing to continuously bring the best travel experience to our consumers and business partners. We at the Experimentation Science & Statistics team keep exploring new methodologies and techniques ...

The Likelihood-Ratio Test

The Likelihood-Ratio Test (LRT) is a statistical test used to compare the goodness of fit of two models based on the ratio of their likelihoods. This article will use the LRT to compare two models which aim to predict a sequence of coin flips in order to develop an intuitive understanding of the wha...