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Preprocess

This section allows us to choose and modify the data being acted upon. Weka allows users to select a data file in a large set of supported formats. The following is a screenshot of Weka Explorer:

As you can see in the preceding screenshot, there are multiple choices for selecting the dataset from:

Open file...: This option displays a file selection box to select the data file from the local disk or the network location.
Open URL: This option displays a URL input box that accepts the HTTP URL endpoint for the dataset.
Open DB: This option allows users to connect to a database and fetch the dataset. The database can be accessed ...

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