Class SVMLightLoader

    • Field Detail

      • FILE_EXTENSION

        public static java.lang.String FILE_EXTENSION
        the file extension.
    • Constructor Detail

      • SVMLightLoader

        public SVMLightLoader()
    • Method Detail

      • globalInfo

        public java.lang.String globalInfo()
        Returns a string describing this Loader.
        Returns:
        a description of the Loader suitable for displaying in the explorer/experimenter gui
      • getFileExtension

        public java.lang.String getFileExtension()
        Get the file extension used for svm light files.
        Specified by:
        getFileExtension in interface FileSourcedConverter
        Returns:
        the file extension
      • getFileExtensions

        public java.lang.String[] getFileExtensions()
        Gets all the file extensions used for this type of file.
        Specified by:
        getFileExtensions in interface FileSourcedConverter
        Returns:
        the file extensions
      • getFileDescription

        public java.lang.String getFileDescription()
        Returns a description of the file type.
        Specified by:
        getFileDescription in interface FileSourcedConverter
        Returns:
        a short file description
      • reset

        public void reset()
                   throws java.io.IOException
        Resets the Loader ready to read a new data set.
        Specified by:
        reset in interface Loader
        Overrides:
        reset in class AbstractFileLoader
        Throws:
        java.io.IOException - if something goes wrong
      • setSource

        public void setSource​(java.net.URL url)
                       throws java.io.IOException
        Resets the Loader object and sets the source of the data set to be the supplied url.
        Parameters:
        url - the source url.
        Throws:
        java.io.IOException - if an error occurs
      • setURL

        public void setURL​(java.lang.String url)
                    throws java.io.IOException
        Set the url to load from.
        Specified by:
        setURL in interface URLSourcedLoader
        Parameters:
        url - the url to load from
        Throws:
        java.io.IOException - if the url can't be set.
      • retrieveURL

        public java.lang.String retrieveURL()
        Return the current url.
        Specified by:
        retrieveURL in interface URLSourcedLoader
        Returns:
        the current url
      • setSource

        public void setSource​(java.io.InputStream in)
                       throws java.io.IOException
        Resets the Loader object and sets the source of the data set to be the supplied InputStream.
        Specified by:
        setSource in interface Loader
        Overrides:
        setSource in class AbstractLoader
        Parameters:
        in - the source InputStream.
        Throws:
        java.io.IOException - if initialization of reader fails.
      • getStructure

        public Instances getStructure()
                               throws java.io.IOException
        Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
        Specified by:
        getStructure in interface Loader
        Specified by:
        getStructure in class AbstractLoader
        Returns:
        the structure of the data set as an empty set of Instances
        Throws:
        java.io.IOException - if an error occurs
      • getDataSet

        public Instances getDataSet()
                             throws java.io.IOException
        Return the full data set. If the structure hasn't yet been determined by a call to getStructure then method should do so before processing the rest of the data set.
        Specified by:
        getDataSet in interface Loader
        Specified by:
        getDataSet in class AbstractLoader
        Returns:
        the structure of the data set as an empty set of Instances
        Throws:
        java.io.IOException - if there is no source or parsing fails
      • getNextInstance

        public Instance getNextInstance​(Instances structure)
                                 throws java.io.IOException
        SVMLightLoader is unable to process a data set incrementally.
        Specified by:
        getNextInstance in interface Loader
        Specified by:
        getNextInstance in class AbstractLoader
        Parameters:
        structure - ignored
        Returns:
        never returns without throwing an exception
        Throws:
        java.io.IOException - always. SVMLightLoader is unable to process a data set incrementally.
      • getRevision

        public java.lang.String getRevision()
        Returns the revision string.
        Specified by:
        getRevision in interface RevisionHandler
        Returns:
        the revision
      • main

        public static void main​(java.lang.String[] args)
        Main method.
        Parameters:
        args - should contain the name of an input file.