learning-rate-scaler
v1.0.1
Published
Learning rate scaler callback for @tensorflow/tfjs
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Learning rate scaler callback
Learning rate scaler callback for @tensorflow/tfjs
Installation
Package available via:
- NPM
npm install learning-rate-scaler
Usage
Module exports LearningRateCallback
and example function sineWaveRateScaler = (min, max, frequency, maxLearningRateDecay, earningRateDecayPerEpoch)
to use with it. (also a default LearningRateCallback
scaler function).
- example 1
LearningRateCallback
with defaults
import {
LearningRateCallback,
sineWaveRateScaler,
} from "learning-rate-scaler";
const learningRateCallback = new LearningRateCallback()
const inputs = input({
shape: [1],
});
const y1 = dense({ units: 1, name: "y1" }).apply(inputs);
let layersModel = model({
inputs: inputs,
outputs: [y1],
});
layersModel.compile({
optimizer: train.sgd(0.001),
loss: {
y1: "meanAbsoluteError",
},
});
const history = await layersModel.fitDataset(trainingDataset, {
epochs: 1,
callbacks: [learningRateCallback],
});
This would produce a sine-wave-looking learning-rate curve for each sample in the batch (for batch size of 2048 items with default settings).
- example 2
const frequency = 1 / 25; // a fraction - fraction lim -> 0 produces wider periods.
const maxLearningRateDecay = 1.0001 // a number slightly higher than 1
const sineWaveRateScaler = sineWaveRateScaler(0.0001, 1, frequency, )
const learningRateCallback = new LearningRateCallback({scalerFunction: sineWaveRateScaler})
[...]
const history = await layersModel.fitDataset(trainingDataset, {
epochs: 1,
callbacks: [learningRateCallback],
});
This would produce a sine-wave-looking learning-rate curve with decaying of the initial max learning rate for each sample in the batch (for batch size of 2048 items with default settings).
Also it's possible to decay epoch-wise also by providing
const sineWaveRateScaler = sineWaveRateScaler(0.0001, 1, frequency, 1.0001, 1.0001)
Credits
Prepared by Webplan.pro