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R2

Negative R2: Where Did You Go Wrong?

Towards Data Science

Meaning of a negative R2 value. How it can accidentally be obtained. Difference in assumptions between machine learning model and an OLS model for R2, coefficient of determination. Receipt of a negati...

The R1 Moment

TheSequence

The release of DeepSeek-R1 will mark a before and after in the evolution of AI.

Unpacking R²

Towards Data Science

Data science is an iterative process, which is especially true for new practitioners. We can spend weeks on a project, only to later discover a fundamental flaw in the analysis. This post explores a…

R-Squared(R²)

Python in Plain English

Tutorial for calculating R² using Python with data provided from MacroTrends. Full working code provided to the reader. This article serves as a step by step tutorial for the R² method with full work...

What is R

MachineLearningMastery.com

Last Updated on August 22, 2019 R is perhaps one of the most powerful and most popular platforms for statistical programming and applied machine learning. When you get serious about machine learning, ...

r² or R² — When to Use What

Towards Data Science

The Pearson correlation coefficient (r) is used to identify patterns in things whereas the coefficient of determination (R²) is used to identify the strength of a model.

Moving Away From R²

Towards Data Science

R² is a well known model metric that every data analyst has in her toolbelt, but despite its prevalence, there is a mismatch between how data analysts tend to talk about and use this metric versus…

#37: Introducing r2u with 2 x 19k CRAN binaries for Ubuntu 22.04 and 20.04

R-bloggers

One month ago I started work on a new side project which is now up and running, and deserving on an introductory blog post: r2u. It was announced in two earlier tweets (first, second) which contained ...

ch03.rst2

Natural Language Processing with Python

Interpreting R²: a Narrative Guide for the Perplexed

Towards Data Science

An accessible walkthrough of fundamental properties of this popular, yet often misunderstood metric from a predictive modeling perspective Photo by Josh Rakower on Unsplash R² (R-squared), also known...

Planet, revisted 2

Towards Data Science

This post is a bit of an experiment. I’m consistently impressed and confused by researchers like Leslie Smith and Jeremy Howard for the quality, and quantity of their work — and how complicated their…...