# Questions tagged [computational-statistics]

Refers to the interface of statistics and computing; the use of algorithms and software for statistical purposes.

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### mixed effect model question

Hi i have a certain task i want to solve: For two months, participants played an app, in which they played 5 different therapeutic games (TGs). At the beginning of each session, they also completed a ...
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### UBCF rating predict for binary data in R package recommenderlab

In the R package recommenderlab's predict function for binary data (specifically unary for market basket analysis), why does the code do the following for the weighted UBCF model? ...
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### Guidance for statistical analysis on academic collaborations [closed]

I am currently engaged in a research project involving data analysis in the field of academic publications and author collaborations. The dataset I'm working with includes information such as ...
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### Confusion on Chi-Squared test results

Basically, I have the data where I am trying to assess whether there is any correlation between the gender of the manager and the gender of people within their team. I decided to do the chi-squared ...
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### Bias and Variance of a Honest Random Forest

I am trying to read the paper Estimation and Inference of Heterogeneous Treatment Effects using Random Forests. In the section 3.1(Theoretical Background), page 13 paragraph 2, The authors have ...
1 vote
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### Most efficient way of converting a Quarto document to a presentation [closed]

I currently have a large body of statistics lecture notes that I wrote in Rmarkdown/Quarto document format, and I am looking to convert these notes to Quarto presentations in the simplest way possible....
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### Inference of Beta-Bernoulli Distribution

Assume $x_1, x_2, \cdots, x_n$ follows a $Bern(\pi_0)$, Let $y_{ik}$ follows $Beta(\alpha,\beta)$, $i\in \{1,\cdots, n\}$, and $k\in \{1,\cdots, K\}$. Let $z_k$ follows a Bernoulli Distribution with a ...
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### Logic behind the direction of coefficient in generalized estimating equation

I am not familiar with statistics and thus nor am I familiar with the methodological reasoning behind it so can someone please explain the reasoning behind the following results: I have an outcome (...
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### Why do I get NaN p values in some variables when using mgcv to fit generalized additive mixed models?

I am currently trying to fit milk production data collected for three years by using generalized additive mixed model through mgcv package. The problem is, I am getting NaN p values in some variables. ...
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### Statistical models or problems equipped with methods that guarantee optimal or near solutions in finite time

What are some statistical models or problems that have computationally tractable solutions and are guaranteed to be optimal or near optimal? By computationally tractable, I mean finite time and ...
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### Is this algorithm for robust estimation of the covariance matrix sensible?

I have a high dimensional dataset $\bf{X} \subset \mathbb{R}^d$, which is multimodal and has outliers. I want to estimate a robust measure of association, something like the correlation between two ...
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### Is the Wikipedia Sample Entropy code wrong?

I'm following a tutorial paper on sample entropy, and I implemented the algorithm myself in Rust. To check my work, I used Wikipedia's python code in this article. I have computed an example by hand ...
1 vote
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### How do I numerically compute $I(X;CX+Y)$?

Given that $X\sim\text{Bernoulli}(\nu)$ for some $\nu\in(0,1)$, and $Y\sim N(0,1)$ are independent random variables. I want to compute the mutual information $I(X;CX+Y)$, where $C$ is some known non-...
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### Coding the likelihood function for logistic regression

I would appreciate help in understanding if I made a correct interpretation and coding of the likelihood function for logistic regression. Background: For a task I am going to write a function in <...
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### How to statistically determine if two files have identical content?

I'm writing a duplicate file finder application, and I do not want to have to read every byte of every file to determine which files are duplicates. Hard drive storage is segmented into clusters of X ...