A. Data Format Open source tools usually do as a business tool as data on a variety of formats provide good support, but there will be a certain format restrictions, or even require their own proprietary data formats. When selecting tools, you should first consider whether the data meets or after conversion tool can meet the requirements, while, if the results of the analytical tools but also for subsequent processing, it should also take into account the output format previously used tools are common or can NO is converted to a common format, to support the work of the late. Weka
input formats include ARFF, CSVXRFF and C4.5, output formats including ARFF, CSV, stored in the database via JDBC. LingPipeinput formats include XML, HTML and Text, output formats including XML.