Questions tagged [r]
R is a free, open-source programming language and software environment for statistical computing, bioinformatics, and graphics.
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Is there a way to create a bootstrapped beta calibration function to use on new data?
I have created ML classification models that are now to be evaluated on a different population for external validation (n=5000, event rates between n=400 and n=1200 for different outcomes under study)....
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Help with bsts model save
I am working on a projet where I need to make predictions using bsts package in r. I trained my bsts model and i want to save the model to use it instead of retraining every day, but when i saved the ...
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Guidelines for image recognition model (inventory purposes)
I have 20,000 plus images of art (paintings, sculptures, jars, etc). My goal is creating a model that, from an input (image), identifies the exact same piece of art and returns its id, details, etc.
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cor() function in R returns NA when given two integers or continuous values
Using R version 4.4.0, I was using the cor() function and originally inputting two continuous values to obtain a default calculated correlation. NA is returned instead of a numeric. I'm able to ...
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What informatics tools will allow complex search in order to select full-text articles?
I'd like to search plant science literature (full text) to only return articles in which the word "three" appears four or more times in the full-text Methods section (presumably the best ...
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Use a metric that is not available in the list of metric for xgboost
Working in R.
I am following this post on stack overflow.
I am train an xgboost model and I want to use another metric that is not in the list of metric we can whoose for the eval_metric parameter.
I ...
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Fequency encoding in R while using a cross validated model: How to use step_lencode_mixed()
One way of addressing high cardinality in a column is the use of frequency encoding. However, if you use a cross validated analysis plan the you would need to re-encode the column at each step.
It's ...
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Why do I get missing value error in XGBoost when it is supposed to be supported?
I read that in the latest versions of XGBoost, the model can handle missing values. I am using the model on some data that contains for example, the BMI, bloodpressure, age, binary data (yes/no) and ...
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Error in f1(x) : argument "y" is missing, with no default
f <- function(x,y){2x^2(y-2)^2+6xy}
integrate(f, -2, 4)
#Error in f1(x) : argument "y" is missing, with no default
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Struggling with normalization/Standardisation for machine learning dataset
Sorry for what is probably a very obvious/rookie question. I'm currently doing a data science module for my degree and making very slow progress with the work.
The case study i'm doing is around HR ...
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Checking MixedModel convergence in Julia
I'm trying to teach myself how to use Julia as an alternative to R, and was running into some trouble with checking convergence of a MixedModel object. In R, if I use the following code
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How can I combine/pool of the results of regression with neural network?
My study has ten imputed dependent variables (plausible values). After separately analyzing each dependent variable using a regression neural network (NN), I must combine/pool the results. I tried ...
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How to get probability of an outcome from skewed t distribution in R
I am trying to calculate the probability of stock return to be greater than X in next 28 days, using the skewed t-distribution as it fits the best to the ...
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lookup tables with multiple (possibly partly empty key columns) - prefer specific match over general one
Assume I have a table with samples:
ID
sample type
origin
project_l1
project_l2
project_l3
...
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DNA
Blood
p1
p1.1
p1.1.1
p1...
2
DNA
Blood
p1
p1.1
p1.1.2
p1...
3
DNA
Blood
p1
p1.1
4
DNA
Blood
p1
...
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