Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Hobbyists & Makers · Naive Bayes

Naive Bayes for a ranking model

Built for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker. Simulate a ranking model live below — adjust the inputs and watch it respond, right in your browser.

Naive Bayes ClassifierLive

classification by probability

Controls

Presets

Class 1 mean

Class 2 mean

Spread σ

Prior P(class 1)

Naive Bayes models each class as a probability distribution and assigns a new point to whichever class makes it most likely, weighted by the prior. Where the weighted curves cross is the decision boundary. It is fast, simple, and famously strong on text. Educational tool.

▶ Run in Python

Data Inspector

Decision boundary0.28

Class overlaplow (easy)

Governing equation

P (C ∣ x) \propto P (C) N (x; μ_{C}, 1), P (C_{1}) = 0.5, \hat{C} = ar g C max

Reading this result: Well-separated classes with a balanced prior put the boundary right between the means, exactly where the two weighted curves cross.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

Also for:Students Researchers Educators Engineers K-12 Students First Responders General version →

More with Naive Bayes

Naive Bayes for a neural network Naive Bayes for a sorting algorithm Naive Bayes for a search tree Naive Bayes for a hash table Naive Bayes for a recommendation engine Naive Bayes for an image classifier Naive Bayes for a chatbot Naive Bayes for a pathfinding AI

Frequently asked questions

Is this good for hobbyists & makers?: Yes — this version of "Naive Bayes for a ranking model" is framed for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.