Data Analysis

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I wish to run a "cost-sensitive" randomForest algorithm incorporating a "cost matrix" that reflects a custom loss function, with the option of minimizing the expected misclassification cost. I have read that R’s randomForest package doesn’t directly support multi-class or even binary cost-sensitive

a newbie question: can someone point me to where I can find information to get predicted values after running a multiple regression? Suppose I regress y on x1, x2 and x3. I would like to get a predicted value with x1=3, x2=4 and x3=8, for example. Thanks.

Hello Everyone , Good day , I was trying out Bluesky yesterday and I couldn't get the p-value for a hypothesis test. 2 sample t-test, Independent , to be precise. Any idea ? Thank you

I am trying to open a dataset but I get this error message and I cannot get the dataset to be 'active'. Moving the file to a folder with a shorter path (e.g. /Documents) does not help. I attach the file just in case. Any ideas?

Hi BlueSky Statistics Team! I find a problem using the linear regression model with factor regressors: as a simple example, if “Diploma” is used as a nominal factor with 4 categories, in the model formula the labels of the 3 categories are correct, but if “Livelli_spesa” is an ordinal factor with 3

Hi Bluesky Statistics Team, I am encountering the follow error for missing values analysis where my Missing Value Count per Variable does not Match Row Numbers. Please see following: In analyzing the Missing Values for a dataset, the "Missing Value (NAs) Count Per Variable" highlights accurately

I have two questions, [1] How do you turn off scientific notation from results, and [2] Is the decision tree tab running the same analysis as a classification and regression tree (CART) analysis?

Hi BlueSky Team. The menu option Summary > Frequencies produces a table where the numerical order is not correct (rows are sorted for Frequency and not for the variable M values): The problem doesn’t change using or not option “Sort in decending order” (note the typo). Best regards. Ma.C.

In dialogue boxes, my default Bluesky background is aptly blue and the text color is white. When one selects a variable from target or destination the color turns dark blues as well making it impossible to see the variable being selected. As seen above the selected variable in the source and varia

Is it possible for me to modify the dialog for for Decision Trees to add a weight variable? I know the rpart function can incorporate a weight variable. I realize that I can create custom dialogs for my own functions -- but is it possible for me to access the code for the Decision Tree dialog and cr

I'm looking at how to save my workspace. I can save the dataset, i can save the output, but built models seem to not seem to be able to be saved, meaning I have to rebuild stuff everytime I come back to a project.