Cross Validated Questions, Problems & Solutions : TransWikia.com ~ Page 32

simulation of logistic regression sensitivity to prior probability: Brier score vs accuracy

I wrote a simulation in R that compares performance of a logistic regression as I vary the prior probability of the two classes. The gist is that I do a...

Asked on 11/24/2021

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What is the best structure (Accuracy of the text extracted) for building an OCR? ATTENTION, CRNNN, DRAM,RAM, CTC based

If I want to make a new OCR for extracting text from textbooks, specially maths and chemistry, what should be the structure for the OCR? THERE ARE LOT OF TUTORIALS...

Asked on 11/24/2021

0 answer

Nearest-neighbor returns different results based on coordinates chosen

I'm working on a large-scale grouping code that uses pairing of nearest-neighbors to combine points. The points are defined by a spherical coordinates in this way: ...

Asked on 11/24/2021 by zhutchens1

0 answer

Counterexample where E(u|x)=0 in a regression model cannot hold in the population?

Edit:Background information:I have two variables of interest, $y$ and $x$ that are linearly related via the following: $y = a + bx + u$, where...

Asked on 11/24/2021

1 answer

report output GLMER and do contrasts

I'm running a glmer and have a few questions regarding how to interpret the output and how to report it: it's not clear to me what the main effects are...

Asked on 11/24/2021 by Chiara Toschi

0 answer

How determine the bandwidth of a gaussian kernel such that k nearest points represent a certain % of sum weight

I have a dataset to which I am applying a gaussian kernel. I want to determine the bandwidth (sd) of the kernel such that, on average, the k nearest points...

Asked on 11/24/2021 by tzirtzi

1 answer

Comparing ISOMAP residual variance to PCA explained variance

I am using R princomp function (from stats package) to run a PCA on a data set and I want to compare its output to that of the nonlinear dimensionality...

Asked on 11/21/2021 by user3358740

1 answer

How to optimize Gaussian-process parameters for multiple tasks with GPML?

I have a lot of test curves and I want to optimize the length and scale parameters simultaneously for all curves. Is this possible?...

Asked on 11/21/2021 by Scott Thibault

1 answer

For conjoint attribute importance calculation, should insignificant attribute levels be included in the calculation?

In the output for Choice-based conjoint, there are some significant and some insignificant output utilities. When calculating attribute importance (using the difference formula), should I exclude insignificant variables? Or should...

Asked on 11/21/2021 by arctan27

1 answer

Multilevel Poisson Regression

I have some data with individual level variables (like satisfaction) and these individuals are nested within buildings (there are 12 different buildings) and I have a continuous variable that is...

Asked on 11/21/2021

1 answer

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