ai.libs.jaicore.ml.core.dataset

Class ArffUtilities

java.lang.Object

ai.libs.jaicore.ml.core.dataset.ArffUtilities

public class ArffUtilities
extends java.lang.Object

Utility class for handling Arff dataset files.

Method Summary

Modifier and Type	Method and Description
static int	countDatasetEntries(java.io.File file, boolean hasHeader) Counts the amount of datapoint entries in an ARFF file.
static java.lang.String	extractArffHeader(java.io.File file) Extract the header of an ARFF file as a string.
static void	skipWithReaderToDatapoints(java.io.BufferedReader reader) Skips with a given reader all comment lines and the header lines of an ARFF file until the first datapoint is reached.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

extractArffHeader

public static java.lang.String extractArffHeader(java.io.File file)
                                          throws java.io.IOException

Extract the header of an ARFF file as a string.

Parameters:

file - Given ARFF file of which the header shall be extracted.

Returns:

Header of the given ARFF file.

Throws:

java.io.IOException - Could not read from the given file.

countDatasetEntries

public static int countDatasetEntries(java.io.File file,
                                      boolean hasHeader)
                               throws java.io.IOException

Counts the amount of datapoint entries in an ARFF file.

Parameters:

file - Given ARFF file where the entries are written in.

hasHeader - If true the count will start after an '@data' annotation, otherwise it will just count every line, which is not a comment.

Returns:

Amount of datapoint entries.

Throws:

java.io.IOException - Could not read from the given file.

skipWithReaderToDatapoints

public static void skipWithReaderToDatapoints(java.io.BufferedReader reader)
                                       throws java.io.IOException

Skips with a given reader all comment lines and the header lines of an ARFF file until the first datapoint is reached.

Parameters:

reader - Reader that should be skipped to the data.

Throws:

java.io.IOException - Reader was not able to read the file.