it.uniroma2.sag.kelp.data.dataset

Class DatasetReader

java.lang.Object

it.uniroma2.sag.kelp.data.dataset.DatasetReader

Direct Known Subclasses:

CsvDatasetReader, LibsvmDatasetReader

public class DatasetReader
extends Object

A utility class to read dataset in the platform format.

Author:

Simone Filice

Field Summary

Fields

Modifier and Type	Field and Description
protected BufferedReader	inputBuffer
protected String	nextRow

Constructor Summary

Constructors

Constructor and Description
DatasetReader(String filename)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	checkRowValidity()
void	close() Closes the reading buffer
boolean	hasNext() Checks whether there is at least another example to read
protected BufferedReader	openBufferedReader(String filename)
Example	readNextExample() Returns the next example
void	restartReading() Resets the reading such that the next example will be the first one
void	skipExample() Skip an example: this function is useful when an example cannot be read

Methods inherited from class java.lang.Object

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

Field Detail

inputBuffer

protected BufferedReader inputBuffer

nextRow

protected String nextRow

Constructor Detail

DatasetReader

public DatasetReader(String filename)
              throws IOException

Throws:

IOException

Method Detail

openBufferedReader

protected BufferedReader openBufferedReader(String filename)
                                     throws IOException,
                                            FileNotFoundException,
                                            UnsupportedEncodingException

Throws:

IOException

FileNotFoundException

UnsupportedEncodingException

restartReading

public void restartReading()
                    throws IOException

Resets the reading such that the next example will be the first one

Throws:

IOException

checkRowValidity

protected void checkRowValidity()

hasNext

public boolean hasNext()

Checks whether there is at least another example to read

Returns:

readNextExample

public Example readNextExample()
                        throws IOException,
                               InstantiationException,
                               ParsingExampleException

Returns the next example

Returns:

the next example

Throws:

IOException

InstantiationException

ParsingExampleException

skipExample

public void skipExample()
                 throws IOException

Skip an example: this function is useful when an example cannot be read

Throws:

IOException

InstantiationException

close

public void close()
           throws IOException

Closes the reading buffer

Throws:

IOException