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.
- 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.
To use the String Similarity in your project, simply copy the provided code into your JavaScript file or module.
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
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`
- 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.
- A
- 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 atarget
string and itsrating
.bestMatch
: The object fromratings
with the highest rating.bestMatchIndex
: The index ofbestMatch
in theratings
array.
- An object containing:
Contributions to the String Similarity are welcome. Please ensure to follow the coding standards and submit your pull requests for review.
This project is open-source and available under the MIT License.