I' trying to write a classifier usisn R
   
    I have microarray data(.xls), i saved the data as   .txt, and import them in R with read.table()
    I  first tried to calcute knn: but i always receive the failure: Data have  differents length, when i check their Length there are same.
     
     How kann i calculate one of these classifiers sing   R:
    knn- classifier
    Bayes-classifer
    Hidden Markov Modell
    Neural net
     
    Thanks for your help

 		
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