fstab
  • Member for 8 years, 3 months
  • Last seen more than a month ago
  • Amsterdam, Netherlands
1 answers
5 votes
8k views
2 bookmarks
How to calculate entropy from a set of samples?
3 answers
3 votes
2k views
Any good introductory book/tutorial on Fourier Transform (up to FFT) with plenty of exercises and solutions?
1 answers
3 votes
84 views
1 bookmarks
Constrained nonlinear optimization
2 answers
2 votes
250 views
1 bookmarks
If $g$ is a function of the random variable $X$, is it true that $H(X) = H(X) + H(g(X)\mid X)$?
3 answers
2 votes
111 views
1 bookmarks
Fun problem. Apparently $\prod_i(1-p_i) \geq 1 - \sum_ip_i$ with $p_i \in [0,1]$ is always true. But how to demonstrate it?
0 answers
2 votes
193 views
1 bookmarks
Reducing a linear algebra expression to quadratic form
2 answers
2 votes
739 views
Row echelon form of (augmented) matrix. Is there something wrong with Sage's implementation?
1 answers
2 votes
4k views
1 bookmarks
What is the maximum amount of eigenvectors that a square matrix n x n might have?
2 answers
1 votes
269 views
Given a Markov chain $X \rightarrow Y \rightarrow Z$, why is $I(X;Y|Z) \leq I(X;Y)$?
2 answers
1 votes
84 views
1 bookmarks
being $\mathbf{w}$ a vector, how do I calculate the derivative of $\mathbf{w}^T\mathbf{w}$?
2 answers
1 votes
244 views
stuck on logarithm of derivative of sum $\frac{\partial\mathrm{log}(a+b)}{\partial a}$
1 answers
1 votes
7k views
1 bookmarks
Stuck on derivative of logarithm of sum of exponentials
0 answers
1 votes
41 views
1 bookmarks
Integrating an expression over a vector $\mathbf{w}$
0 answers
0 votes
84 views
How to identify what probability distribution this is?
0 answers
0 votes
112 views
2 bookmarks
How to efficiently select a subset of elements that maximizes a certain property? (entropy)
1 answers
0 votes
102 views
What is the exact meaning of $I(X;Y|Z)$ in Information Theory?
1 answers
0 votes
117 views
How to prove Markov's inequality $P_X(X\geq t) \leq \frac{\mathbb{E}[X]}{t}$?
1 answers
0 votes
246 views
1 bookmarks
Markov chain: if $X\rightarrow Y\rightarrow Z$, then why is $Z\rightarrow Y\rightarrow X$ true?
1 answers
0 votes
48 views
maximum-likelihood: a sequence of events described by a Bernoulli distribution
0 answers
0 votes
41 views
being $\mathbf{a}$ and $\mathbf{b}$ two vectors with same length, how do I expand $(\mathbf{a}^T\mathbf{b})^2$?
1 answers
0 votes
39 views
name of plot for discrete joint probability (table) visualizing black squares of varying size per cell
1 answers
0 votes
716 views
Is a traditional Multi Layer Perceptron Network capable of non-linear regression? Which activation function should be used for that purpose?