TOPSIS-Python

Submitted By: Vanshika Nassa
Roll Number: 102016110
Batch: 3CS12

git: https://github.com/stuporunicorn/topsis102016110

Installation

pip install TopsisPackageDataScience-vanshika102016110nassa3CS12-102016110

What is TOPSIS

Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) originated in the 1980s as a multi-criteria decision making method. TOPSIS chooses the alternative of shortest Euclidean distance from the ideal solution, and greatest distance from the negative-ideal solution. More details at wikipedia.

How to use this package:

TopsisPackageDataScience-vanshika102016110nassa3CS12-102016110 can be run as in the following example:

In Command Prompt

>> topsis data.csv "1,1,1,1,1" "+,-,+,-,+" result.csv

Sample dataset

Consider this sample.csv file

First column of file is removed by model before processing so follow the following format.

All other columns of file should not contain any categorical values.

Fund Name,P1,P2,P3,P4,P5 M1,0.81,0.66,5.9,43.8,15.6 M2,0.67,0.58,1.8,62.1,16.4 M3,0.89,0.87,4.2,50.7,14.15 M4,0.82,0.67,2,32.6,11.98 M5,0.76,0.56,6.9,31.3,12.9 M6,0.72,0.88,2.7,47.8,12.8 M7,0.92,0.98,3.1,54.3,16.32 M8,0.78,0.61,7.1,36,10.85 weights vector = [0.25,1,1,0.80,1]

impacts vector = [ +,+,-,+,-]

input:

topsis sample.csv "0.25,1,1,0.80,1" "+,+,-,+,-" output.csv

output:

output.csv file will contain following data :

Fund Name,P1,P2,P3,P4,P5,Topsis score,Rank M1,0.81,0.66,5.9,43.8,15.6,0.25437487737312253,6 M2,0.67,0.58,1.8,62.1,16.4,0.6506396821452161,3 M3,0.89,0.87,4.2,50.7,14.15,0.5763040337448186,5 M4,0.82,0.67,2.0,32.6,11.98,0.6316539516437067,4 M5,0.76,0.56,6.9,31.3,12.9,0.1588440472634522,8 M6,0.72,0.88,2.7,47.8,12.8,0.7467977034332189,1 M7,0.92,0.98,3.1,54.3,16.32,0.6891413065596583,2 M8,0.78,0.61,7.1,36.0,10.85,0.23756825400098508,7

Information of benefit positive(+) or negative(-) impact criteria should be provided in I.

The rankings are stored in a csv file, with the 1st rank offering us the best decision, and last rank offering the worst decision making, according to TOPSIS method.

Debugging and Exception Handling

The program has several assert statements which raise errors with helpful description in the following cases:

• Wrong dimensions of decision matrix (not 2D), weights (not 1D)
• Length of weights and impacts don't match
• Weights or impacts don't match number of attributes
• For command line, number of arguments is less than 3 required
• File extension must be .csv

License

Copyright 2023 Vanshika Nassa
This repository is licensed under the MIT license.
See LICENSE for details. MIT