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dice-string-similarity

v1.0.0

Published

Finds degree of similarity between strings, based on Dice's Coefficient.

Downloads

245

Readme

String Similarity

A simple and efficient JavaScript utility for comparing string similarity using bigram comparison/Dice's Coefficient. This utility provides functions to compare two strings for their similarity and to find the best match for a given string from an array of strings. This project is a continuation/enhancement of string-similarity originally developed by aceakash.

Features

  • Compare Two Strings: Calculate the similarity score between two strings based on bigram comparison, ranging from 0 (completely different) to 1 (identical).
  • Find Best Match: Find the best matching string from an array of strings for a given main string, based on their similarity scores.

Installation

To use the String Similarity in your project, simply copy the provided code into your JavaScript file or module.

Usage

Comparing Two Strings

To compare the similarity between two strings, use the compare function:

const { compare } = require('dice-string-similarity');

const similarityScore = compare('string1', 'string2');
console.log(similarityScore); // Outputs the similarity score between 0 and 1

Finding the Best Match

To find the best match for a string from an array of target strings, use the findBestMatch function:

const { findBestMatch } = require('dice-string-similarity');

const mainString = 'main string to compare';
const targetStrings = ['target string 1', 'target string 2', 'target string 3'];
const bestMatch = findBestMatch(mainString, targetStrings);

console.log(bestMatch); // Outputs the best match object containing `ratings`, `bestMatch`, and `bestMatchIndex`

API Reference

compare(first, second)

  • Parameters
    • first (string): The first string to compare.
    • second (string): The second string to compare.
  • Returns
    • A number: The similarity score between the two strings, ranging from 0 to 1.

findBestMatch(mainString, targetStrings)

  • Parameters
    • mainString (string): The main string to compare against.
    • targetStrings (Array): An array of strings to compare the main string with.
  • Returns
    • An object containing:
      • ratings: An array of objects, each containing a target string and its rating.
      • bestMatch: The object from ratings with the highest rating.
      • bestMatchIndex: The index of bestMatch in the ratings array.

Contributing

Contributions to the String Similarity are welcome. Please ensure to follow the coding standards and submit your pull requests for review.

License

This project is open-source and available under the MIT License.