Questions tagged [r]

Use this tag for any *on-topic* question that (a) involves `R` either as a critical part of the question or expected answer, & (b) is not *just* about how to use `R`.

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143 views
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Proving that logistic regression on $I(X>c)$ by $X$ itself recovers decision boundary $c$ when $X$ is normal

Backgrounds Suppose that $X \sim \mathcal{N} (0,\sigma^2)$, and define $C\equiv I(X>c)$ , for a given constant(decision boundary) $c$. Now assume we perform a logistic regression: $$\mathrm{...
1
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1answer
64 views
+50

Bivariate isotonic regression on unbalanced grid

I would like to do classic isotonic regression on bivariate data (that is to say, x with two columns). The function biviso of package Iso is very fast but requires a balanced grid. I would like to do ...
1
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0answers
97 views
+100

How do I perform an actual “posterior predictive check”?

Note: If you downvote, please explain why so I can improve the question. If you only downvote I have no clue what should be done. This question is the follow-up of this previous question: Bayesian ...