https://github.com/juliendelplanque/arff

An Arff generator written in Pharo.
https://github.com/juliendelplanque/arff

arff arff-generator arff-strings pharo smalltalk weka

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An Arff generator written in Pharo.

• Host: GitHub
• URL: https://github.com/juliendelplanque/arff
• Owner: juliendelplanque
• License: mit
• Created: 2016-04-24T22:02:37.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2018-04-16T13:59:27.000Z (over 6 years ago)
• Last Synced: 2024-11-17T06:40:19.690Z (about 1 month ago)
• Topics: arff, arff-generator, arff-strings, pharo, smalltalk, weka
• Language: Smalltalk
• Size: 36.1 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Arff

An Arff generator written in Pharo.

Arff is a format defined by [Weka](http://www.cs.waikato.ac.nz/ml/weka/) to be used for data importation.

This project implements a representation of weka's arff concepts as objects in Pharo  and is able to generate valid arff strings.

See [Arff file spec](https://weka.wikispaces.com/ARFF) to learn more about this format.

## Install

You can install this project using the Catalog Browser or by evaluating the following code in a fresh image:

~~~

Metacello new

    baseline: 'Arff';

    repository: 'github://juliendelplanque/Arff/repository';

    load

~~~

## Use this project as a dependency

Simply add this code snippet to your baseline:

~~~

spec baseline: 'Arff' with: [

    spec repository: 'github://juliendelplanque/Arff/repository' ].

~~~

## Example

The following code:

~~~

doc := ArffDocument new.

doc

    relation: 'temperature';

    addDateAttribute: 'time' format: 'yyyy-MM-dd HH:mm:ss';

    addNumericAttribute: 'temperature';

    addNominalAttribute: 'weather' specification: #('sunny' 'cloudy').

doc

    addInstance: #('2015-01-01 12:00:00' 5  'sunny');

    addInstance: #('2015-02-01 18:40:00' 8  'sunny');

    addInstance: #('2015-03-01 05:04:00' 3  'cloudy');

    addInstance: #('2015-04-01 13:01:20' 15 'cloudy');

    addInstance: #('2015-05-01 09:07:00' 12  'sunny');

    addInstance: #('2015-06-01 12:20:00' 6  'cloudy').

doc asString

~~~

Generates the arff string:

~~~

@relation temperature

@attribute time date "yyyy-MM-dd HH:mm:ss"

@attribute temperature numeric

@attribute weather {sunny,cloudy}

@data

"2015-01-01 12:00:00",5,"sunny"

"2015-02-01 18:40:00",8,"sunny"

"2015-03-01 05:04:00",3,"cloudy"

"2015-04-01 13:01:20",15,"cloudy"

"2015-05-01 09:07:00",12,"sunny"

"2015-06-01 12:20:00",6,"cloudy"

~~~

## TODO

- Add messages in ArffDocument to make the DSL simpler.

- Add possibility to add comment in an ArffDocument.

Pull requests are welcome. :)