Web of Belief — A Collaborative Bayesian Network

Legend

Proposition / claim
Central / topic node
Selected subgraph
Supporting inference
Counterargument

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Truth values

Every proposition has a credence in [0, 1] — the truth value of the proposition. For propositions with no incoming inferences, the credence is set directly by the user. For propositions with incoming inferences, the credence is computed as credence = prior + Σ ±(premise × strength) (clamped), where the prior is the user's stipulated truth value before the inferences are considered. Each inference has a strength in [0, 1] — the relevance of the premise's truth to the conclusion's truth — applied with a + sign for supports and a − sign for rebuts.

Build your web of belief

This is a blank Bayesian network. Add propositions, connect them with inferences, and the credences will propagate. Edit a node to see its claim, contributors, and the reasons for and against it.

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