Hello. This is the first time i am using RTextTools. I have to implement an SVM classification on a collection of text documents. I am following this tutorial.
http://journal.r-project.org/archive/2013-1/collingwood-jurka-boydstun-etal.pdf I am giving you my code, stepwise. #First i read my data and gave an index file. The index file had a list of all the text documents to be classified along with their individual tag. Example, if there is a file, abc.txt, belonging to the genre X, the index file will have it stored as abc.txt,X and so on. Code : data = read_data('C:/Users/dell/Dropbox/Bundeli/corpus/wob/sklearn/folder', type=c('folder'), index = 'C:/Users/dell/Dropbox/Bundeli/corpus/wob/sklearn/index.txt') #####Second, i create a doc-term matrix. doc_matrix <- create_matrix(data, language="english", removeNumbers=TRUE, stemWords=TRUE, removeSparseTerms=.8) #####Third, i create a container which houses container <- create_container(doc_matrix, data$genre, trainSize=1:93, testSize=94:116, virgin=FALSE) #######Here, data$genre is a label, where each document has its genre label given in exact order, aligned like an index. ######So far, there has been no error. But Now when i try to train the SVM on the container, using the following code, SVM <- train_model(container, "SVM") ##### It gives me this error.###### Error in svm.default(x = container@training_matrix, y = container@training_codes, : x and y don't match. ######When i see the structure of the "container', it shows me training codes empty. Like this. (attached full structure)###### Slot "training_codes": factor(0) Levels: Slot "testing_codes": factor(0) Levels: #####Can somebody please, please help? I have been desperately trying to look for some answer. Could there be something wrong with the index file of read_data, or is it a problem with the data$genre variable? Those are the new things, i may have gotten them incorrect. I will be most grateful. ####### [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
