https://github.com/fs02/multinomial-hmm

Dead simple multinomial hmm in NodeJs
https://github.com/fs02/multinomial-hmm

hidden-markov-model nodejs

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Dead simple multinomial hmm in NodeJs

• Host: GitHub
• URL: https://github.com/fs02/multinomial-hmm
• Owner: Fs02
• License: unlicense
• Created: 2016-12-08T02:11:36.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2016-12-18T04:27:23.000Z (over 9 years ago)
• Last Synced: 2025-10-14T04:23:43.301Z (9 months ago)
• Topics: hidden-markov-model, nodejs
• Language: JavaScript
• Size: 4.88 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# multinomial-hmm [![npm version](https://badge.fury.io/js/multinomial-hmm.svg)](https://badge.fury.io/js/multinomial-hmm)

Dead simple multinomial hmm in NodeJs

## Usage

```

var MultinomialHMM = require("./lib/multinomial-hmm")

// Example from wikipedia

states = ['Healthy', 'Fever']

observations = ['normal', 'cold', 'dizzy']

start_probability = {'Healthy': 0.6, 'Fever': 0.4}

transition_probability = {

  'Healthy' : {'Healthy': 0.7, 'Fever': 0.3},

  'Fever' : {'Healthy': 0.4, 'Fever': 0.6}

}

emission_probability = {

  'Healthy' : {'normal': 0.5, 'cold': 0.4, 'dizzy': 0.1},

  'Fever' : {'normal': 0.1, 'cold': 0.3, 'dizzy': 0.6}

}

let hmm = new MultinomialHMM(start_probability, transition_probability, emission_probability)

console.log(hmm.predict(observations));

```

## Reference

Viterbi : https://en.wikipedia.org/wiki/Viterbi_algorithm