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21 results for “from:Andra Isan”

glmnet
Andra Isan · Aug 9, 2011 · r-help

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Plotting question
Andra Isan · Sep 8, 2011 · r-help

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Question about paste
Andra Isan · Aug 30, 2011 · r-help

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ROCR package question for evaluating two regression models
Andra Isan · Sep 2, 2011 · r-help

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How to fit my data with a distribution?
Andra Isan · Jan 6, 2012 · r-help

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How to fit my data with a distribution?
Andra Isan · Jan 6, 2012 · r-help

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Cv.glment question -- why giving me an error
Andra Isan · Aug 11, 2011 · r-help

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Question about NULL matrix? Can I define a NULL matrix in R?
Andra Isan · Aug 10, 2011 · r-help

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Question about model selection for glm -- how to select features based on BIC?
Andra Isan · Sep 7, 2011 · r-help

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Question about BIC of two different regression models? how should we compare two regression models?
Andra Isan · Sep 1, 2011 · r-help

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Mixture of Regressions
Andra Isan · Aug 26, 2011 · r-help

Dear All, I have two hidden classes for my data set that I would like to learn them based on the Mixture of Binomial regression model. I was wondering if there is any package that I can use for that...

How to find the accuracy of the predicted glm model with family = binomial (link = logit)
Andra Isan · Aug 25, 2011 · r-help

Hi All, When modeling with glm and family = binomial (link = logit) and response values of 0 and 1, I get the predicted probabilities of assigning to my class one, then I would like to compare it with my vector y...

Grouping variables in a data frame
Andra Isan · Aug 26, 2011 · r-help

Hi All, I have a data frame as follow: user_id time age location gender ..... and I learn a logistic regression to learn the weights (glm with family= (link = logit))), my response value is either zero or one. I would...

Question about FlexMix package
Andra Isan · Aug 25, 2011 · r-help

Hello All, I am trying to use FlexMix package for my two linear regression models: http://finzi.psych.upenn.edu/R/library/flexmix/doc/regression-examples.pdf y1 = w1 * x1 + w2 *x2 + w3 * x3 +beta1 y2 = w4 * x4 + w4 *x4...

GLM question
Andra Isan · Aug 22, 2011 · r-help

Hi All, I am trying to fit my data with glm model, my data is a matrix of size n*100. So, I have n rows and 100 columns and my vector y is of size n which contains the...

How to do cross validation with glm?
Andra Isan · Aug 24, 2011 · r-help

Hi All, I have a fitted model called glm.fit which I used glm and data dat is my data frame pred= predict(glm.fit, data = dat, type="response") to predict how it predicts on my whole data but obviously...

How to order based on the second two columns?
Andra Isan · Aug 29, 2011 · r-help

Hello All, I have a data frame consisting of 4 columns (id1, id2, y, pred) where pred is the predicted value based on the glm function and my data frame is called "all". "data" is another data frame that has...

How to combine two learned regression models?
Andra Isan · Aug 24, 2011 · r-help

Hi All, I have a set of features of size p and I would like to separate my feature space into two sets so that p = p1 + p2, p1 is a set of features and p2 is another set of...

a Question regarding glm for linear regression
Andra Isan · Aug 19, 2011 · r-help

Hello All, I have a question about glm in R. I would like to fit a model with glm function, I have a vector y (size n) which is my response variable and I have matrix X which is by...

GLM question
Andra Isan · Aug 23, 2011 · r-help

Thanks a lot Joshua. That clearly solved my problem. I actually tried number 3 and it works perfectly fine. I used the prediction function as follows: pred= predict(glm.fit,data = dat, type="response") (glm.fit is my fitted model...

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