Farideh Bagherzadeh Khiabani

25 Questions 24 Answers 0 Followers

Questions related from Farideh Bagherzadeh Khiabani

Is there any way to produce the same random numbers in R when using Linux or Windows?

I'm getting slightly different random numbers depending on the OS (Windows vs Linux) although I have specified the seed using set.seed. Is there anyway to guarantee reproducibility across...

03 March 2018 2,256 11 View

Does any one know how to calculate the bias and variance of a logistic regression model?

I have fitted a logistic regression model in R. I am not sure how to estimate the bias and variance of this model.

02 February 2017 4,152 5 View

Is there an R function to find the position of a vector of elements in another vector?

I am looking for an R function like the following one: f

08 August 2016 3,523 2 View

Do you know any available PhD position in data-mining/machine-learning?

Dear Colleagues Does anyone know any available phd scholarship in the field of data mining concerning clinical applications and bioinformatics (university ranking < 100)? I have a good...

01 January 2016 4,000 0 View

Where can I find a data set containing the two variables: "Prostate-specific antigen" and "prostate cancer"?

Where can I find a data set containing the two variables: "Prostate-specific antigen" and "prostate cancer"? The dataset has been used in a lot of studies by Vickers such as: Prostate-specific...

01 January 2016 7,484 3 View

Which one is superior: Save, dput, dump in R?

I used to save the result of my analysis (like an imputed data, ...) using save () and load it by load(). I recently came across dput() and dump(). Are they superior to save()?

10 October 2015 1,616 0 View

Any advice on a data set with both numerical and categorical variables and a two-class response?

I need a data set containing both numerical and categorical variables and a two-class outcome to be used in examples of my R package. Do you know any well-known one?

10 October 2015 5,086 1 View

Do you know any R Package for search algorithms?

I need a couple of search algorithms. Does anybody know a package containing a lot of search algorithms such as stepwise, hill climbing, genetic search?

09 September 2015 2,530 0 View

While importing a package in another Package in R, do I have access to the hidden functions ?

Hi, I am writing a package and I need the hidden functions of another package. If I import that package while writing my package, do I have access to its hidden functions?

07 July 2015 436 6 View

How can I import SPSS data into R and retain both labels and values?

I need to import SPSS data into R and retain both the values and value labels for the variables. The read.spss() function from foreign package gives me option to retain either values OR value...

05 May 2015 2,395 1 View

How can I write a GUI for a R package?

I would like to write a GUI (preferably starts in Windows) for a R package. Do you have any suggestions where to start from? Do you have any package or softwares for that?

04 April 2015 5,508 5 View

How to pool data? What is the appropriate software?

Dear all, I am working in a research institute working on clinical data. My boss decided to gather together data from all institutes across the country. Anyone has any experience to share? Where...

03 March 2015 3,390 3 View

Is there a package for Stacking models in R?

Is there a package for Stacking (a kind of ensembling) models in R?

03 March 2015 7,850 0 View

How should we handle the missing values in test data?

I partitioned my data into train and test sets. I did outlier detection and missing value imputation in my training set. Then, I built a model on this set. I am not sure what I should do about...

02 February 2014 4,179 6 View

Is biclustering possible on a data set containing both numerical and categorical variables?

I have a data set containing both numerical and categorical variables, I want to do biclustering on it in R using the package biclust or any other recommended package. Does anybody have any...

01 January 2014 4,943 1 View

Help on interpreting plots after implementing logistic regression?

I implemented a logistic regression in R and got the following plot. Can anybody help me interpret it or introduce me to some good resources which can assist me?

01 January 2014 1,634 6 View

Can anyone help me install the packages not by CRAN in R? (like StabPerf)

I want to use the StabPerf package in R. Any commands I use, there is an error. Can anyone give me a hand in the commands I should use? Here is when you can download the package in .tar.gz...

12 December 2013 661 0 View

If you use 10-fold cross validation to build 10 trees, how can you create a single representation from all those ten trees created?

If you use 10-fold cross validation to derive the error in, say, a C4.5 algorithm, then you are essentially building 10 separate trees on 90% of the data to test on 10% - 10 times. How can you...

12 December 2013 4,599 3 View

How can I import the "Word Net Dictionary" using the "Open Word Net Dictionary" Operator in Rapidminer?

I am working on text mining in Rapid miner. I need to use the Word Net Dictionary. I installed the extension, and I downloaded the dictionary itself. But I don't know how to set parameters of...

11 November 2013 6,165 6 View

Does anybody have any recommended packages or commands to create a Random Forest using C4.5 (based on information gain in R)?

In the package randomForest of R, CARTs (based on gini) are used to create the forest. I need to use C4.5 (based on gain). Any recommendations for packages or commands?

11 November 2013 4,850 5 View

What is the difference between data mining and machine learning?

Although I've been working on data mining a while, I`m still having problems in distinguishing between these two areas when it comes to application.

09 September 2013 3,101 7 View

I need a good way to reduce dimension of my data?

I have a data set of 500 records and 90 attributes. What are good ways to reduce the dimension without losing much information? I don't want to do something like PCA, because the interpretation...

09 September 2013 1,507 27 View

Does anybody know how I can create this chart in R in order to see the distances between real values and the imputed ones?

What is the R command for that?

08 August 2013 703 3 View

Does any body have any idea how I can create the figure attached using R to show absolute distances from the original data values to the imputed ones?

07 July 2013 7,980 3 View

Is there a way to compare the multiple imputations used in R Sofware to impute missing values?

I am using VIM and Amelia packages in R to impute missing values in my dataset.

07 July 2013 8,694 6 View