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Update the index.md of Bayesian Network #217

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Feb 8, 2023
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Update the index.md of Bayesian Network #217

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Expand Up @@ -91,7 +91,7 @@ Let $$Q$$, $$W$$, and $$O$$ be three sets of nodes in a Bayesian Network $$G$$.

For example, in the graph below, $$X_1$$ and $$X_6$$ are $$d$$-separated given $$X_2, X_3$$. However, $$X_2, X_3$$ are not $$d$$-separated given $$X_1, X_6$$, because we can find an active path $$(X_2, X_6, X_5, X_3)$$

A former CS228 student has created an [interactive web simulation](http://pgmlearning.herokuapp.com/dSepApp) for testing $$d$$-separation. Feel free to play around with it and, if you do, please submit any feedback or bugs through the Feedback button on the web app.
A former CS228 student has created an [interactive web simulation](https://web.archive.org/web/20211018095256if_/http://pgmlearning.herokuapp.com/dSepApp) for testing $$d$$-separation. Feel free to play around with it and, if you do, please submit any feedback or bugs through the Feedback button on the web app.

The notion of $$d$$-separation is useful, because it lets us describe a large fraction of the dependencies that hold in our model. Let $$I(G) = \{(X \perp Y \mid Z) : \text{$X,Y$ are $d$-sep given $Z$}\}$$ be a set of variables that are $$d$$-separated in $$G$$.

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