ca.pfv.spmf.tools.dataset_converter

Class TransactionDatabaseConverter

java.lang.Object

ca.pfv.spmf.tools.dataset_converter.TransactionDatabaseConverter

public class TransactionDatabaseConverter
extends java.lang.Object

This class is for converting transaction databases from various formats to the SPMF format.

See Also:

Formats

Constructor Summary

Constructors

Constructor and Description
TransactionDatabaseConverter()

Method Summary

Modifier and Type	Method and Description
void	convert(java.lang.String input, java.lang.String output, Formats inputFileformat, int lineCount) This method converts a transaction database from a given format to the SPMF format.
java.util.Map<java.lang.Integer,java.lang.String>	convertARFFandReturnMap(java.lang.String inputFile, java.lang.String outputFile, int lineCount) This method convert a transaction database in ARFF format to SPMF format and return a map of key = item id value = corresponding attribute value.

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionDatabaseConverter

public TransactionDatabaseConverter()

Method Detail

convert

public void convert(java.lang.String input,
                    java.lang.String output,
                    Formats inputFileformat,
                    int lineCount)
             throws java.io.IOException

This method converts a transaction database from a given format to the SPMF format.

Parameters:

input - the path of the input file

output - the path of the file to be written to disk in SPMF format

inputFileformat - the format of the input file

lineCount - the number of lines from the input file that should be converted

Throws:

java.io.IOException - an exception is thrown if there is an error reading/writing files Otherwise, null.

convertARFFandReturnMap

public java.util.Map<java.lang.Integer,java.lang.String> convertARFFandReturnMap(java.lang.String inputFile,
                                                                                 java.lang.String outputFile,
                                                                                 int lineCount)
                                                                          throws java.io.IOException

This method convert a transaction database in ARFF format to SPMF format and return a map of key = item id value = corresponding attribute value. This method is to be used by the GUI version of SPMF that need to keep the mapping between item IDs and attribute value in memory to avoid an extra database scan.

Parameters:

inputFile - the path of the file to be converted

outputFile - the path for saving the converted file

lineCount - the number of lines of the input file to be converted

Returns:

a map of entry (key : itemID, value: attribute-value) if the input format is ARFF.

Throws:

java.io.IOException - if an error while reading/writing files