Saving training data in json file in javascript

Question

I am training a data using a brain.js library in javascript.

const brain = require('brain.js')
const network = new brain.NeuralNetwork()
network.train([
    {input: {Workst: 0.0000, Worken: 0.6666, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Fifth: 1} },
    {input: {Workst: 0.5555, Worken: 0.7777, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Fifth: 1} },
    {input: {Workst: 0.0000, Worken: 0.4444, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Fourth: 1} },
    {input: {Workst: 0.2222, Worken: 0.6666, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Fifth: 1}},
    {input: {Workst: 0.4444, Worken: 0.9444, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {First: 1} },
    {input: {Workst: 0.3333, Worken: 0.9444, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {First: 1} },
    {input: {Workst: 0.0555, Worken: 0.5000, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Fifth: 1} },
    {input: {Workst: 0.8333, Worken: 0.9444, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Third: 1} },
    {input: {Workst: 0.7777, Worken: 0.8333, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Second: 1} },
    {input: {Workst: 0.5555, Worken: 0.9444, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Second: 1} },
    {input: {Workst: 0.6111, Worken: 0.9444, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Third: 1} },
    {input: {Workst: 0.0005, Worken: 0.1666, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Third: 1} },
    {input: {Workst: 0.2222, Worken: 0.6111, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Fifth: 1} },
    {input: {Workst: 0.2222, Worken: 0.4444, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Fifth: 1 } },
    {input: {Workst: 0.5555, Worken: 0.6666, earlyMiss: 0, middleMiss: 0, lateMiss: 0}, output: {Fourth: 1} },
])
const result = network.run({Workst: 0.5675, Worken: 0.90, earlyMiss: 0, middleMiss: 0, lateMiss: 0});

//const result = brain.likely({Age: 0.5, Experience: 1, BFP: 1, Calories: 0}, network);
console.log(result);

I will have to add new data points frequently and train data again, so I want to save training data somewhere. I want to save trianing data in a json file, and use something like

network.train("data.json");

everytime. Is it possible to do this?

score 0 · Answer 1 · answered Jan 16 '21 at 23:58

Here's an easy way that will work on small scale. Assuming you have your data in data.json you could do:

const fs = require("fs")
//...
network.train(JSON.parse(fs.readFileSync("data.json", "utf-8")));

Further reading: https://nodejs.dev/learn/reading-files-with-nodejs/

Saving training data in json file in javascript

1 Answers1