for issues related to linear regression modelling approach
0
votes
1answer
15 views
can't use application.worksheetfunction.linest in a loop
i'm trying to make a function that calculates the LINEST for a different ranges of data within a big two dimensional array, everything works fine except for when i need to use the function LINEST ...
0
votes
1answer
32 views
Add line to ci.plot
I've made a confidence interval plot to a simple linear regression problem using ci.plot from the HH library
observations2 <- subset(observations, year > 1994 & year < 2049)
model.seaice ...
0
votes
0answers
19 views
Logistic Regression Backward elimination using Java
I'm looking for a Java library/framework for Logistic Regression Backward Elimination task.
Can someone recommend me one ?
0
votes
0answers
40 views
In R: Can a model formula include variables in a numerator and denominator?
I am trying to find the best fit between an species dataset and prevailing climatic conditions, in order to be able to predict the environmental conditions from the species dataset (paleoclimate ...
-1
votes
0answers
30 views
Fit Linear Model Using Generalized Least Squares with Unknown Covariance Matrix [closed]
I want to fit a linear model y on x with respect to a grouping factor and with respect to a covariance structure of dependent variable within groups. I have a dataset similar to the following.
y1 ...
0
votes
0answers
13 views
Scipy optimize minimize slsqp tries to take len of float64
This is a continuation from Scipy Minimize uses a NoneType. Thanks to user333700 for their help with that previous error. Every argument in the optimize.minimize call is as defined in the previous ...
2
votes
0answers
19 views
numpy multivarient regression with linalg.lstsq
I am trying to solve for m1,m2,m3,m4 in the set of equations such that:
y=(m1*x1)+(m2*x2)+(m3*x3)+(m4*x4)
Where:
x1=[x11,x12,x13...]
x2=[x21,x22,x23...]
x3=[x31,x32,x33...]
x4=[x41,x42,x43...]
...
3
votes
1answer
57 views
matlab plotting linear regression on a 3D scatter plot
I am new to matlab and have just started on the UBC AI course. I used the least squares algorithm to generate the weights for the data-set I'm working with and the weights ive generated are [ 0.3400 ...
-2
votes
0answers
38 views
Transforming variables for multiple regression in R [closed]
I am trying to perform a multiple regression in R. However, my dependent variable has the following plot:
I know that I need to perform a transformation on this variable (and possibly the ...
0
votes
0answers
6 views
Regression of a binary variable with a dominating class (more examples from that class)
How can I perform a regression where the dependent variable is binary and there are many more examples of one class that the other one?
I am specifically interested in the regression case, not ...
1
vote
1answer
31 views
Scipy Minimize uses a NoneType
I'm trying to code a multiple linear regression. Here's the line of code where my program raises an error:
least = optimize.minimize(residsq(xmat, ylist, coeff), coeff, constraints = ({'type': 'eq', ...
-1
votes
0answers
32 views
NLME regression & curve comparison in R. ANOVA p-value [closed]
I got data of typical time point in two conditions in this shape
weigth condition time
0.1307857 Transf 1
0.1926429 Transf 2
0.2734286 Transf 3
0.4403571 Transf 4
0.6037143 ...
-1
votes
0answers
50 views
R: finding regression of straight line after and before inflection point
I have made a scatterplot of a curve line on the following data.
df<-data.frame(Time = c('12:55','12:56','12:57','12:58','12:59', ...
2
votes
1answer
81 views
Constrained least-square regression - Matlab or R
I'm doing a least-square regression on some data, the function has the form
y ~ a + b*x
and I want the regression line to pass through a specific point P(x,y) (which is not the origin).
How can I ...
0
votes
1answer
35 views
Proper Formatting and Procedures for Basic Data Entry and Manipulation in SAS
I have a data file that I am trying to import into SAS that looks something like the below:
WCM2B W C M 2 B M.B 2 18.4 12.3 g
WCM2B W C M 2 B M.B 2 19.2 12.3 g
WCM2B W C M 2 B S.P 2 19.5 DQ ('')
...
