Search Results
Search type | Search syntax |
---|---|
Tags | [tag] |
Exact | "words here" |
Author |
user:1234 user:me (yours) |
Score |
score:3 (3+) score:0 (none) |
Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
Views | views:250 |
Code | code:"if (foo != bar)" |
Sections |
title:apples body:"apples oranges" |
URL | url:"*.example.com" |
Saves | in:saves |
Status |
closed:yes duplicate:no migrated:no wiki:no |
Types |
is:question is:answer |
Exclude |
-[tag] -apples |
For more details on advanced search visit our help page |
2
votes
0
answers
41
views
Calculation of inverse regression
I am reading the paper on consistency and sparsity for sliced inverse regression in high dimensions (https://doi.org/10.1214/17-AOS1561). … What I only know is the classical sliced inverse regression conclusion that $E(x|y)$ satisfies
$$ E(x|y) = \Sigma\beta(\beta^{T}\Sigma\beta)^{-1}\beta^T E(x|y).
$$
Is there a similar conclusion when we …
2
votes
Accepted
Should we use measured vs. modelled or modelled vs. measured?
And that is exactly what ordinary least squares regression does. … The use of 45 degree angles makes it easier to compare differences (see also this question and answer about slopegraphs)
Related questions
Inverse Regression vs Reverse Regression
Effect of switching …
3
votes
If $X$ and $Y$ are uncorrelated random variables, then under what condition is $E[X \mid Y] ...
This question was motivated by the sliced inverse regression method of Duan and Li, where you regress $X$ on $Y$ to learn about $Y|X$ …
1
vote
R's lm(), get x when y is known
I don't have enough reputation to comment, but I've heard it referred to as calibration or inverse regression. Hope that gives you something to start. …
2
votes
Accepted
Is it possible (and even correct) to calculate a confidence interval from an interpolated va...
This is a 'calibration' or (perhaps more descriptively) an 'inverse regression' problem. That should guide you to some useful theoretical treatments. …
0
votes
0
answers
50
views
Model fit after inverse regression and forward stagewise on residuals
"B", "C", "D", "E"),
height = c(2, 4, 6, 10, 12),
gene1 = c(0.2, -0.3, -0.6, -0.7, -0.8),
gene2 = c(0.4, -0.2, -0.4, -0.2, -0.6),
gene3 = c(-0.1, 0.1, 0.3, 0.5, 0.7))
I became interested in doing inverse … regression on gene 1, since the residual values I obtain from that gives different results than using height as response. …
0
votes
Which is the error of a value corresponding to the maximum of a function?
This is a variant of calibration, or inverse regression/inverse prediction. One survey paper is this at JSTOR but it does not look explicitly at predicting the peak location. … Some stored google searches that looks promosing: peak detection and confidence intervals and response surface, inverse regression. …
5
votes
2
answers
4k
views
Inverse Regression vs Reverse Regression
This is what I mean by inverse regression.
However I've seen since been playing with some toy models and I'm starting to see that the 'wrong' method produces much better predictions. … Are there other situations where inverse regression actually outperforms? …
3
votes
1
answer
277
views
Using QR Factorization to improve Sliced Inverse Regression
This code implements Slice Inverse Regression (SIR) in an unusual way. I notice that, when I compare it to the standard algorithm, the modified algorithm does better. … import numpy as np
import matplotlib.pyplot as plt
from sliced import SlicedInverseRegression
# sliced inverse regression
# X - NxM matrix of M inputs and N observations
# Y - vector of responses of length …
1
vote
0
answers
67
views
Regression betas of X on Y and Y on X are both less than one? [duplicate]
If I regress y on x and the beta is less that one, shouldn't the beta from a regression of x on y be greater than one. … And if that's the case should the inverse regression yield a beta greater than one?
What am I missing? Is there an easy way to conceptualize this? …
0
votes
1
answer
124
views
Can we use sliced inverse regression for p> n
I've been using sliced inverse regression for my work and I use the dr package in R to estimate the parameter vector. … I really appreciate it if someone can direct me to a link or an R package that can handle the p>n case for sliced inverse regression. Or if you can explain why we can't use it when p>n. …
0
votes
0
answers
472
views
Regression and calibration/inverse regression - the same?
I will do this by using a multiple regression.
First question: Is a simple multiple regression sufficient or is there something "advanced" more suitable? … Despite from that, I wonder if a calibration is the same as an inverse regression? …
5
votes
Are negative Detection Limit for concentrations consistent
Magno, “A statistical overview on univariate calibration, inverse regression, and detection limits: application to gas chromatography/mass spectrometry technique”, Mass Spectrometry Reviews 26 (2007) 1 …
3
votes
1
answer
76
views
Inverted dose-response variables
Typically this is done with inverse regression techniques (i.e. after-fitting / reparameterisation), but sometimes these impose constraints or come with a greater degree of uncertainty. …
1
vote
What is the error of my regression?
$$A=\frac{1}{1-\left(\frac{V}{\theta_0} \right)^{\theta_1}}+\theta_2 \tag 1$$
The inverse function is :
$$V=\theta_0\left(1-\frac{1}{A-\theta_2} \right)^{1/\theta_1} \tag 2$$
The problem is to evaluate … ADDITION after comments
Cubic Polynomial Regression works very well with log-log variables :
Even quadratic polynomial regression is sufficient as shown on the next figure :
But the polynomial regression …