linear-regression

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Ruby Library for doing Linear or NonLinear Least Squares Approximation?

Is there a Ruby library that a开发者_Go百科llows me to do either linear or non-linear least squares approximation of a set of data.[详细]

2023-03-08 00:17 分类：问答
numpy: code to update least squares with more observations

I am looking for a numpy-based implementation of ordinary least squares that would allow the fit to be updated with more observations. Something along the lines of Applied Statistics alg开发者_运维问答[详细]

2023-03-04 17:58 分类：问答
Do there exist methods to identify quadratic components in a linear model with R?

Suppose we have an additive model of the form y=x1+x2+... with a lot of variables. Is there a routine in R to identify variables that should be considered as exhibiting a quadratic effect? I know that[详细]

2023-03-03 23:54 分类：问答
Weighted Linear Regression in Java

Does anyone know of a scientific/mathematical library in Java that has a straightforward implementation of weighted linear regression? Something along the lines of a function that takes 3 arguments an[详细]

2023-02-25 18:05 分类：问答
Getting p-value for linear regression in C gsl_fit_linear() function from GSL library

I\'m trying to reporduce some code from R in C, so I\'m trying to fit a linear regression using the gsl_fit_linear() function.[详细]

2023-02-21 08:07 分类：问答
Lapackpp vs Boost BLAS

for start, i am newbie in C++. i am writing a program for my Master thesis which part of it suppose to solve regression in a recursive way.[详细]

2023-02-02 15:06 分类：问答
Solving normal equation system in C++

I would like to solve the system of linear equations: Ax = b A is a n x m matrix (not square), b and x are both n x 1 vectors. Where A and b are known, n is from the order of 50-100and m is about[详细]

2023-02-01 23:50 分类：问答
multivariate regression

I have two dependents that both depent on two variables AND on each other, can this be modelled in R (must be!) but I can\'t figure out how, anyone a hint?[详细]

2023-01-31 17:13 分类：问答
Finding the break in data from a piecewise function

Greetings, I\'m performing research t开发者_如何学Pythonhat will help determine the size of observed space and the time elapsed since the big bang. Hopefully you can help![详细]

2023-01-31 13:43 分类：问答
predict.lm() with an unknown factor level in test data

I am fitting a model to factor data and predicting. If the newdata in predict.lm() contains a single factor level that is unknown to the model, all of predict.lm() fails and returns an error.[详细]

2023-01-27 06:18 分类：问答