Find answers to your questions about Cross Validated or help others by answering their Cross Validated questions.
I was able to find the partial derivative of the cost function with respects to a single variable without much difficulty. However, this requires propagating backwards through the network for...
Asked on 11/21/2021 by E Fresher
0 answerI have three data sets, each including a subset of some features. For example, dataset 1 have feature A and feature B. dataset 2 have feature B and feature C....
Asked on 11/21/2021 by henry50618
0 answerI've only taken a few statistics courses, and so I apologize if any of my questions are rudimentary, however, I'm wondering if someone could explain/direct me to resources regarding the...
Asked on 11/21/2021 by molecularrunner
1 answerI was wondering, is any positive semidefinite matrix a valid covariance matrix? My problem is the following. I want to simulate a stochastic covariance matrix where the log-volatility (log of...
Asked on 11/21/2021 by apocalypsis
1 answerI am running a GLMM in R in lme4 package, the outcome variable is binary and the 10 fixed effects are a mix of categorical and continuous variables. The models...
Asked on 11/21/2021 by AhmadMkhatib
1 answerI'm a programmer and currently trying to apply the Latent Dirichlet Allocation algorithm by Blei et al. on a text mining problem. I am using a library called gensim for...
Asked on 11/20/2021 by user60674
2 answerI am carrying out logistic regression to determine which factors affect whether lasers are effective bird deterrent devices. In my model, a success (1) is when a bird flies away...
Asked on 11/20/2021 by FCassidy
1 answerI have a few models doing prediction with 4 classes, with the output precision and recall varying with different labels. For example I have (with the class labels being 0,...
Asked on 11/20/2021
1 answerI am studying about calculation of standard error. It's formula is :standard error = standard deviation of population / square root of nIf we do not know the standard...
Asked on 11/20/2021 by narayanpatra
3 answerSuppose I have a logistic regression model $Y_i=mathbf{1}(X_ibeta>epsilon_i)$ to estimate, where the distribution of $epsilon_i$ is known, $X_i$ follows distribution $F_{theta}$ with an unknown scalar parameter...
Asked on 11/20/2021
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