[英]brain.js correct training of the neuralNetwork
我必须清楚地误解了大脑中的某些内容.js关于训练的指示
我玩这个repl.it代码
const brain = require('brain.js');
const network = new brain.NeuralNetwork();
network.train([
{ input: { doseA: 0 }, output: { indicatorA: 0 } },
{ input: { doseA: 0.1 }, output: { indicatorA: 0.02 } },
{ input: { doseA: 0.2 }, output: { indicatorA: 0.04 } },
{ input: { doseA: 0.3 }, output: { indicatorA: 0.06 } },
{ input: { doseA: 0.4 }, output: { indicatorA: 0.08 } },
{ input: { doseA: 0.5 }, output: { indicatorA: 0.10 } },
{ input: { doseA: 0.6 }, output: { indicatorA: 0.12 } },
{ input: { doseA: 0.7 }, output: { indicatorA: 0.14 } },
]);
const result = network.run({ doseA: 0.35 });
console.log(result);
>> { indicatorA: 0.12165333330631256 }
=> undefined
期待结果为{ indicatorA: 0.07 }
我究竟做错了什么?
增加迭代次数并降低错误阈值对我有用:
const brain = require('brain.js');
const network = new brain.NeuralNetwork();
network.train([
{ input: { doseA: 0 }, output: { indicatorA: 0 } },
{ input: { doseA: 0.1 }, output: { indicatorA: 0.02 } },
{ input: { doseA: 0.2 }, output: { indicatorA: 0.04 } },
{ input: { doseA: 0.3 }, output: { indicatorA: 0.06 } },
{ input: { doseA: 0.4 }, output: { indicatorA: 0.08 } },
{ input: { doseA: 0.5 }, output: { indicatorA: 0.10 } },
{ input: { doseA: 0.6 }, output: { indicatorA: 0.12 } },
{ input: { doseA: 0.7 }, output: { indicatorA: 0.14 } },
], {
log: true,
iterations: 1e6,
errorThresh: 0.00001
});
const result = network.run({ doseA: 0.35 });
console.log(result);
//
结果: { indicatorA: 0.0693388432264328 }
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