How to use "Process Document From File" operator of RapidMiner in Java Code <p>I have just started using rapid miner for text classification. I have created a process in which i used "Process Document from Files" operator for tf-idf conversion. I want to ask how to use this operator in Java code ? I search on internet but all are using the already created process or word list generated from documents ? I want to start it from scratch i.e. </p> <p>1 ) Process Documents From File </p> <p>1.1) Tokenization</p> <p>1.2) Filtering</p> <p>1.3) Stemming</p> <p>1.4) N-Gram</p> <p>2) Validation</p> <p>2.1) Training (K-NN)</p> <p>2.2) Apply Model</p>