Ideas, connected.
Draw variables and their relationships. Edit probability tables and turn an abstract problem into a model you can see.
Build a network BUILT FOR CURIOUS MINDS
Make uncertainty
make sense.
Bayesian network software for teaching and learning.
A visual workspace to build models, explore evidence,
and understand the reasoning behind every update.
No installation No account to explore Built for learning
BAYESIAN NETWORK
Rain CHANCE
Yes20%
No80%
Click Wet pavement to set evidence
THE REASONINGA little evidence.
A little evidence.
A different picture.
There’s a 20% chance of rain. What changes when you discover the pavement is wet?
Probability of rain20%Before observing evidence
Explore cause, evidence & beliefSimplified teaching example
LESS BLACK BOX. MORE “NOW I GET IT.”See what’s inside
FROM FORMULAS TO UNDERSTANDINGDon’t just calculate it.
Don’t just calculate it.
See why it changes.
Give students room to ask “what if?”
BayesLab connects the model, the evidence,
and the explanation in one workspace.
Change one thing.
Learn something new.
Set evidence, watch beliefs update, and compare scenarios. Explore how observations change what a model tells you.
Explore an exampleThe reasoning
stays in view.
Follow worked explanations, revisit key concepts, and explore decisions through their expected utility.
Look inside the workspaceA NEW ADDITION TO YOUR TEACHING TOOLKITLess setup.
Less setup.
More discovery.
From a live lecture demonstration to a hands-on tutorial, bring probabilistic thinking into the classroom without a software installation exercise.
Let’s explore a pilot for your courseStart with something familiar
Use built-in examples covering rain, medical screening, alarms, and more to ground abstract concepts.
Make the lesson hands-on
Let students change evidence and inspect the results, supported by an introductory tutorial and concept guides.
Take the model beyond the lesson
Download project files, share a model by link, or export a diagram for slides and discussion.
UNIVERSITY PILOTHelp shape a better way
Help shape a better way
to teach uncertainty.
We’re inviting educators to test BayesLab with their teaching material and tell us what works—and what’s missing.
Explore it with your course in mind Share feedback on the learning experience Help inform what comes next
Find the right tool. Build your understanding.
A FEW GOOD QUESTIONSBefore you
Before you
dive in.
What can I do in BayesLab?
Build discrete Bayesian networks and influence diagrams, edit probability and utility tables, set evidence, and inspect updated probabilities. You can also compare evidence scenarios and explore expected utility for fixed decision choices.
Do students need to install anything?
No. The editor runs in a web browser and can be opened without an account. Students can start with a built-in example or create a network from scratch.
Where are models saved?
The current session is autosaved in the browser on that device. Download a .bayes project file to keep a portable copy. Share links contain a copy of the model; they are not live collaboration links. There is no cloud account storage.
Is BayesLab ready for a university pilot?
BayesLab is an early-stage teaching tool available for evaluation. We are seeking feedback from educators on usability, explanations, and classroom fit. Please validate models and results before using them for assessment or consequential decisions.
Can I use it for my whole course?
Start by exploring the app with a representative lesson or exercise. A pilot is a chance to discuss your course requirements and identify what is needed before a wider rollout. LMS integration, institutional accounts, and collaborative editing are not currently included.