topsis-harnoor-102303260 0.1.1

A package implement TOPSIS from scratch.

TOPSIS-Harnoor-102303260

This package is a Python-based command-line utility that implements the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). It helps users evaluate and rank multiple alternatives by comparing them across several quantitative criteria. By incorporating user-specified weights and preference directions, the tool calculates a performance score and assigns a final rank to each alternative.

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Installation

The package can be installed easily using pip:

pip install topsis-harnoor-102303260

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Usage Overview

The application is designed to be executed directly from the terminal. To run the analysis, you must provide:

• an input dataset (CSV or Excel),
• a list of weights,
• a list of impacts, and
• an output filename to store the results.

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Command Syntax

topsis <InputFile> <Weights> <Impacts> <OutputFile>

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Argument Explanation

1. InputFile

   • Location of the dataset file (.csv or .xlsx).
   • The file must contain at least three columns.
   • The first column represents the alternatives (such as Product IDs or Names) and is not included in calculations.
   • All subsequent columns should contain numeric criterion values.

2. Weights

   • A comma-separated sequence of numbers defining the importance of each criterion.
   • Example: "3,2,1,4"

3. Impacts

   • A comma-separated list of symbols (+ or -) indicating preference direction:
     • + means higher values are better
     • - means lower values are better

4. OutputFile

   • The name of the CSV file where the computed scores and rankings will be saved.

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Example Walkthrough

Suppose we want to evaluate five smartphones based on four criteria: Price, Camera Quality, Battery Capacity, and Storage.

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1. Input Dataset (phones.csv)

Phone	Price	Camera	Battery	Storage
P1	500	8	4500	128
P2	600	9	4800	256
P3	450	7	4200	64
P4	700	9	5000	256
P5	550	8	4700	128

Evaluation Criteria:

• Price → Lower is better (-)
• Camera Quality → Higher is better (+)
• Battery Capacity → Higher is better (+)
• Storage → Higher is better (+)

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2. Running the Analysis

Execute the following command:

topsis phones.csv "2,3,2,1" "-,+,+,+" results.csv

• Camera quality is given the highest priority.
• Price is treated as a cost criterion.

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3. Output File (results.csv)

The output contains the original data along with two additional columns: TOPSIS Score and Rank.

Phone	Price	Camera	Battery	Storage	TOPSIS Score	Rank
P1	500	8	4500	128	0.548	3
P2	600	9	4800	256	0.682	2
P3	450	7	4200	64	0.401	5
P4	700	9	5000	256	0.755	1
P5	550	8	4700	128	0.612	4