Converting a Transaction Database to SPMF Format (SPMF documentation)

This example explains how to convert a transaction database to SPMF format using the SPMF open-source data mining library.

How to run this example?

• If you are using the graphical interface, (1) choose the "Convert_a_transaction_database_to_SPMF_format" algorithm, (2) select the input file "contextCSVTrans.csv", (3) set the output file name (e.g. "output.txt") (4) set input_format = CSV_INTEGER and sequence count = 5.(5) click "Run algorithm".
• If you want to execute this example from the command line, then execute this command:
  java -jar spmf.jar run Convert_a_transaction_database_to_SPMF_format contextCSVTrans.csv output.txt CSV_INTEGER 5 in a folder containing spmf.jar and the example input file contextCSVTrans.csv.
• If you are using the source code version of SPMF, launch the file "MainTestConvertTransactionDatabaseCSVtoSPMF.java" in the package ca.pfv.SPMF.tests.

The tool for converting a transaction databases to SPMF format. It takes three prameters as input:

• an input file,
• the input file format database format (CSV_INTEGER),
• the number of transactions to be converted

The algorithm outputs a transaction database in SPMF format.

The CSV_INTEGER format is defined as follows:

• each line is a transaction
• each transaction is a list of items represented by positive integers (>0) separated by commas.

For example, the follwing sequence database is in CSV_INTEGER format and contains four sequences:

1,2,3,4
5,6,7,8
5,6,7
1,2,3

After conversion the result is a transaction database file in SPMF format: