npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

bayes-classifier

v0.0.5

Published

Naive Bayes classifier

Downloads

2,790

Readme

Naive Bayes classifier

This is a Naive Bayes classifier implementation written in JavaScript.

I took out the relevant algorithms from the appratus and natural modules, and also the Porter stemmer algorithm. All credit goes to them.

Demo

https://lab.miguelmota.com/bayes-classifier

Install

npm install bayes-classifier
bower install bayes-classifier

Usage

var BayesClassifier = require('bayes-classifier')
var classifier = new BayesClassifier()

var positiveDocuments = [
  `I love tacos.`,
  `Dude, that burrito was epic!`,
  `Holy cow, these nachos are so good and tasty.`,
  `I am drooling over the awesome bean and cheese quesadillas.`
]

var negativeDocuments = [
  `Gross, worst taco ever.`,
  `The buritos gave me horrible diarrhea.`,
  `I'm going to puke if I eat another bad nacho.`,
  `I'd rather die than eat those nasty enchiladas.`
]

classifier.addDocuments(positiveDocuments, `positive`)
classifier.addDocuments(negativeDocuments, `negative`)

classifier.train()

console.log(classifier.classify(`I heard the mexican restaurant is great!`)) // "positive"
console.log(classifier.classify(`I don't want to eat there again.`)) // "negative"
console.log(classifier.classify(`The torta is epicly bad.`)) // "negative"
console.log(classifier.classify(`The torta is tasty.`)) // "positive"

console.log(classifier.getClassifications(`Burritos are the meaning of life.`))
/*
 [ { label: 'positive', value: 0.22222222222222224 },
   { label: 'negative', value: 0.11111111111111112 } ]
*/

Restoring a classifier to avoid re-training data

// Storing classifier
var storeFile = `${__dirname}/store.json`
fs.writeFileSync(storeFile, JSON.stringify(classifier))

// ...

// Restoring classifier
var classifier = new BayesClassifier()
var storedClassifier = require(storeFile)
classifier.restore(storedClassifier)

API

classifier.addDocument(doc, class)

classifier.addDocuments([docs], class)

classifier.train()

classifier.classify(doc)

classifier.getClassifications(doc)

classifier.restore(classifier)

Test

npm test

License

MIT