Simple Perceptron in Propel

Perceptron.js

import { Params, T } from "propel"
let params = new Params()
let trainingData = [
	[[0, 0, 1], 0],
  	[[0, 1, 1], 1],
  	[[1, 0, 1], 1],
  	[[1, 1, 1], 1]
]
let unit_step = x => x < 0 ? 0 : 1
let w = params.randn("W", [3])
errors = []
eta = 0.2
n = 100
for(let i = 0; i < n;i++){
    let d = trainingData[i % trainingData.length]
    let x = d[0]
    let expected = d[1]
    let result = w.dot(x)
    let error = expected - unit_step(result)
    w = w.add(T(x).mul(eta * error))
}
for(let x of trainingData){
    result = w.dot(x[0])
    console.log(x[1], result, unit_step(result))
}