# Tag Info

## Hot answers tagged st.statistics

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### Binary search on coin heads probability

This is addressed in the following paper of Karp and Kleinberg: Karp, Richard M.; Kleinberg, Robert. Noisy binary search and its applications. Proceedings of the Eighteenth Annual ACM-SIAM ...
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### Is this a known learning problem?

Well, we wrote a paper on it, so now it's definitely known: https://arxiv.org/abs/2010.09886
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### Learning a discrete distribution in $\ell_r$ norm

Clément Canonne and I worked this out at some point. Let $X_j$ be the number of realizations of $j \in [d]$. So $\mathbb{E} X_j = np_j$. \begin{align*} \mathbb{E} J_n^r &= \mathbb{E} \|\hat{P}...
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### Design a sampling process to select an element with probability proportional to its appear probability in a simulation

This can be done efficiently if the size of the samples $S$ is not too large. Let $m$ denote the maximum possible size of $S$. Then the following procedure outputs exactly the correct distribution: ...
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### Terminology and references for a learning model

The related work I know of is experimental, but a similar setup has been called Learning from Label Proportions: https://link.springer.com/article/10.1007/s13278-017-0478-6

### About learning a single Gaussian in total-variation distance

In Appendix B of [Ashtiani et al., Neurips 2018]. https://arxiv.org/pdf/1710.05209.pdf
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### How can AIC converge in the limit when even 2 parameter models can have infinite VC dimension?

I tried to find a simple and accessible analysis of AIC. A definitive work seems to be Barron, Birgé, Massart, "Risk bounds for model selection via penalization" https://link.springer.com/article/10....
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### Why Asymptotic Equipartition Property theorem proofs assume the source is memoryless?

Before we try to get into ergodic or whatever else, let's try to understand what phenomenon a mathematician or scientist is trying to (or could be trying to) model with AEP. Well Asymptotic for ...

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### Notation in proof for Asymptotic Equipartition Property

Your understanding is right, you just need to internalize it a bit more. $U^n$ is a random variable with a well-defined distribution. If you just write $U^n$, it has been defined exactly what you mean....
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### Volume of elements mapped to the same codeword is $2^{H(X|\hat{X})}$

If I understand right what "average volume" means here, I don't think this is correct. For example, let's say you map $n$-bit strings (under uniform distribution) to $n$-bit strings as follows: Given ...
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### Why non-uniform learnability does not imply PAC learnability?

The following answer is based on chapter 6/7 of the book »Understanding Machine Learning: From Theory to Algorithms«, by Shalev-Shwartz and Ben-David (especially Example 7.1). It states that the ...
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### Notation of sequences in rate distortion theory

In information theory notation, capital letters such as $X$ denote random variables, and lowercase letters such as $x$ mean their possible outcomes (i.e., fixed values). For example you can write the ...
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