# Tagged Questions

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### InformationGain on Two Continuos classes instead on inary

I've a problem regarding an excersise with information gain. I can't seem to get the right answer, because the excersises differs from what we learned. Usually, a target class is a binary variable ...
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### How can I plot this?

Given a bunch of data $x_i$ , $y_i$, how do I plot $$f(\theta_2,\theta_2)= \frac{1}{2M} \sum_{i=1}^{M} (\theta_1\cdot x_i -\theta_2 y_i)^2$$ in matlab? I know it should be parabolic, but my code ...
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### Perceptron exercise

I wonder how to find a solution to the following questions: Q: Design a two-input perceptron that implements the boolean function A ∧¬ B? Q: Design a two-layer network of perceptrons that ...
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### Factor graphs: HMM

A friend of mine and me are struggling for a while now on how to start with this example that we have to work out. There is a 10x10 map which an agent is randomly placed on. The single tiles of ...
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### expectation of norm of orthogonal projector

The question has to do with calculating the expected squared norm of a random projection. We have a 2D subspace $T := span\{U1, U2\}$ where $U1$ is a random vector uniformly distributed over unit ...
How can you show that the Fourier series approximation of a function (so $f(x)=\sum\limits_{n=0}^{\infty} (a_n cos(nx) + b_n sin(nx))$ can be approximated to arbitrary precision by a feedforward ...