将数据从 a.json 文件导入到 Brain.js 神经网络

Question

I want to import data from a data.json file into the neural network (which uses the Brain.js framework).Here is the part which is supposed to bring that data to the network and analyse it:

const result = brain.likely(
  require('data.js')
,net);

alert("This is the result: " + result);

And get that data analysed by the neural network and shown to the user. Here are the contents of the data.json file for reference:

{
  'Rating1': 0.12434213,
  'Rating2': 0.987653236,
  'Rating3': 0.432543654
}

For your information this is on written on node.js enviroment.

Answer 1

Assuming your data.json file is in the same directory:

fetch('data.json')
    .then(response => response.json())
    .then(json => {
        const result = brain.likely(json, net);
    });

Alternatively, with async/await:

(async () => {
    const json = await (await fetch('data.json')).json();
    const result = brain.likely(json, net);
})();

If done through a file upload:

// target input element
const input = document.querySelector('input');

// upload event
input.addEventListener('change', () => {
    const file = this.files[0];
    const reader = new FileReader();
    reader.addEventListener('load', e => {
        const json = JSON.parse(e.target.result);
        const result = brain.likely(json, net);
    });
    reader.readAsText(file);
});

If done through Node:

const json = require('./data.json');
brain.likely(json, net);

Useful resources for handling files:

• Using files from web apps - practical examples on how to use the FileReader API
• Fetch API - how to use files already on your server in the browser
• Node's File System readFileSync method - to read file contents synchronously in a Node environment
• JSON.parse - native JS method to convert a string to JSON, useful in all environments