https://github.com/lisette-espin/pychimerge

ChiMerge: Discretization of Numeric Attributes
https://github.com/lisette-espin/pychimerge

chimerge discretization python

Last synced: about 1 year ago
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ChiMerge: Discretization of Numeric Attributes

• Host: GitHub
• URL: https://github.com/lisette-espin/pychimerge
• Owner: lisette-espin
• Created: 2016-02-24T00:53:13.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2016-03-15T16:56:30.000Z (over 10 years ago)
• Last Synced: 2025-04-19T20:53:44.414Z (about 1 year ago)
• Topics: chimerge, discretization, python
• Language: Python
• Size: 19.5 KB
• Stars: 41
• Watchers: 2
• Forks: 24
• Open Issues: 2
• Metadata Files:
  • Readme: README.md

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README

          
# pychimerge

ChiMerge: Discretization of Numeric Attributes

Python implementation of ChiMerge, a bottom-up discretization method based on ChiSqrt test.

- Reference paper: https://www.aaai.org/Papers/AAAI/1992/AAAI92-019.pdf

# Examples

1. Database: IRIS, Attribute: 1 (Sepal Width)

    - Intervals   : [ 2.   2.5  3.   3.4]

    - Chi2: [0-1) :  4.7, [1-2): 17.1, [2-3): 24.2

    - Interval-Class Frequencies (4x3)

    - [[  1.   9.   1.]

      [  1.  25.  20.]

      [ 18.  15.  24.]

      [ 30.   1.   5.]]

2. Database: TOI Example

    - Intervals   : [ 1 11 45]

    - Chi2        : [0-1):  2.7, [1-2):  3.9

    - Interval-Class Frequencies (3x2)

    - [[ 4.  1.]

      [ 1.  3.]

      [ 3.  0.]]