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# Questions tagged [random-variable]

For questions related to the mathematical concept of a random variable (in the context of AI).

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### Should the biases be zero or randomly initialised?

I'm initialising DNN of shape [2 inputs, 2 hiddens, 1 output] with these weights and biases: ...
23 views

### What is the point of converting conditional probability to factor for Variable Elimination?

I have this slide from my AI class on using a Bayes network to compute a conditional probability. I don't really understand the point of converting the conditional probabilities to factors (besides ...
209 views

### Is decision tree learning a deterministic algorithm?

Is decision tree learning a deterministic algorithm? Given a fixed dataset, does it always produce a tree of a same topology? What about random forest?
If we take the vanilla variational auto-encoder (VAE), we $p(z)$ is a Gaussian distribution with zero mean and unit variance and we approximate $p(z|x) \approx q(z|x)$ to be a Gaussian distribution as ...