Arc reversal

Arc reversal is the process of changing the direction of a link between two nodes in a Bayesian network.

To reverse a link, first select a link, and then click the Arc Reversal button on the main toolbar, Network tab, Refactoring group. Alternatively, right click the link in network viewer and click the Arc Reversal context menu item.

When a link is reversed, the overall distribution for the network is maintained (in other words, queries will return exactly the same values). In order to do this, some node distributions will be updated, and new links may need to be added.