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Mastering Probabilistic Graphical Models Using Python by Abinash Panda, Ankur Ankan

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CPD representations

Till now, we have only been working with tabular CPDs. In a tabular CPD, we take all the possible combinations of different states of a variable and represent them in a tabular form. However, in many cases, tabular CPD is not the best choice to represent CPDs. We can take the example of a continuous random variable. As a continuous variable doesn't have states (or let's say infinite states), we can never create a tabular representation for it. There are many other cases which we will discuss in this section when other types of representation are a better choice.

Deterministic CPDs

One of the cases when the tabular CPD isn't a good choice is when we have a deterministic random variable, whose value depends only on the values of ...

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