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Questions tagged [coefficients]

In mathematics, a coefficient is a multiplicative factor in some term of a polynomial, a series or any expression; it is usually a number, but in any case does not involve any variables of the expression.

In mathematics, a coefficient is a multiplicative factor in some term of a polynomial, a series or any expression; it is usually a number, but in any case does not involve any variables of the expression.

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I need to optimise coefficients in the formula to minimise prediction error

I have a formula with 3 coefficients: a + 0.5x1 + 0.6x2 + 0.8*x3 = y_predicted My Target 'y_target' and 'y_predicted' have a bias that I want to minimise. How to I find a new set of parameters the would minimise that bias?
Anna
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Multiple linear Regression calculate coefficients Java

I am currently trying to perform an Multiple linear regression within my Java Project. I already tried many different classes like the OLSMultipleLinearRegression Class. But those classes don't return the parameters I need. For example these are the…
Bl0ss0m
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How to extract multiple levels of coefficients into data frame in R?

I extracted the coefficients from my glmnet model with code: best_lambda_fit_coef <- coef(best_lambda_fit) I got a list of coefficients that are in dgCMatrix, but I'm not sure how to make it a data frame. I looked the answer from Mehrad in …
cheklapkok
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Computing polynomial with the degree and coefficients in R

I want to compute a function which creates the polynomial, if we know the degree and coefficients of that polynomial. So, that is, I want to ask the user for the degree and for a vector with the coefficients. With this information I want to return…
Max
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Extract Fourier coeffients from fft() in R

I need to derive Fourier time series coefficients associated to (i-1)^th harmonic from fft() function in R, some idea? For instance Adding these concepts we get the general form of the Fourier Series: f(t)=a_0+∑_k a_k×sin(kwt+ρ_k) where a_0 is the…
Y. Larriba
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Maximal Information Coefficient vs Hierarchical Agglomerative Clustering

What is the difference between the Maximal Information Coefficient and Hierarchical Agglomerative Clustering in identifying functional and non functional dependencies. Which of them can identify duplicates better?
hope7394 m
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Orange Canvas: Regression models gives the r^2 coefficients out of [-1,1] interval

I am using the Orange canvas with its regression methods to make some estimations about my data set. The regression coefficients r^2 must be inside of the interval [-1,1] for being meaningful according to statistics field. But sometimes, I've got…
DuyguA
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Linear regression coefficients the exact opposite of expected and wrong. A unit increase in wins results in a .95 unit reduction in league finish?

I am doing a project on Premier League Data. I figured I would start with a simple regression (regress finish wins), regressing league finish on wins. The coefficient given is -.95. I think this is off so I regress finish on losses. The coefficient…
harrison
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Binomial Coefficent; cannot be resolved to a variable

i have the following code that outputs the binomial coefficient of 2 numbers. I would like to include the two numbers in a statement that is printed out along with the overall result but i am receiving the following error: _ cannot be resolved to a…
nalydddd
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how to convert null coefficients for the variables in equations "x^2+x^2+2x-x-25" to be "+1x^2+1x^2+2x-1x-25"?

This is my attempting to fix the coefficient of any math equation variable for sum coefficients of the same variables like "x^2+x^2+2x-x-25" to be "+1x^2+1x^2+2x-1x-25" and then make the summation to be "2x^2+x-25", Notice that i have done the…
Hossam Hassan
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In Stata, how can I save estimates and std errors while running multiple regressions?

I am using quite a big data set and would like to estimate the Fama French coefficients for two event windows for each ID. I am using the following code (dummy_reg allocates the observations to the respective event window): sort ID dummy_reg…
user4706570
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how do I obtain a transfer function having an input and an output?

my problem is the next one: I have an input signal and an output one. i need to find a transfer function in this form H(s)=1/(as^2+bs+c). my goal is to have a,b and c.
Razvan
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Integral Coefficients

I am reviewing a proof at the moment and there is terminology that I do not understand. What does it mean for a polynomial to have "integral coefficients"?
Jessica Garcia
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best complexity to evaluate coefficients of polynomial

I want to find out coefficients of the n degree polynomial with roots 0,1,2...n-1. Can anybody suggest a good algorithm? I tried using FFT but didn't work fast enough
Dragonaire
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How to add linear model results (adj-r squared, slope and p-value) onto regression plot in r

Hi I have created a linear model and a regression plot - However, I would like to have the model results on the plot itself - something like the image below: How do I show the key results on the plot? Below is my code for the…
bootz123
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