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index.js
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index.js
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const { exec } = require('child_process');
const path = require('path');
const express = require('express');
const appExpress = express();
const cors = require("cors");
const bodyParser = require("body-parser");
appExpress.use(bodyParser.urlencoded({ extended: false }));
appExpress.use(bodyParser.json());
appExpress.use(cors());
let Data = {
epoch: null,
loss: null,
accuracy: null,
lossData: null,
accuracyData: null,
trainingTime: null,
model: null,
ModelInfo: null,
}
let lossData = [];
let accuracyData = [];
let startTime = null;
function startElectronApp() {
return new Promise((resolve, reject) => {
const pathtoWindow = "node_modules/neuralgraph/window.js"; //"node_modules/neuralgraph/window.js"
const electronProcess = exec(`electron ${pathtoWindow}`);
electronProcess.stdout.on('data', (data) => {
console.log(data);
});
electronProcess.stderr.on('data', (data) => {
console.error(data);
});
electronProcess.on('close', (code) => {
//console.log(`App exited with code ${code}`);
resolve();
});
electronProcess.on('error', (err) => {
console.error('Failed to start app:', err);
reject(err);
});
});
}
async function GenerateGraph(model = null) {
if (model) {
try {
await model.save('file://./model');
Data.model = model;
await startElectronApp();
} catch (err) {
console.error("Error saving model for 3D use: ", err);
}
}
}
function updateGraph(epoch, logs) {
lossData.push({ x: epoch, y: logs.loss * 100 });
accuracyData.push({ x: epoch, y: logs.acc });
const endTime = Date.now();
let trainingTime;
if (startTime === null) {
startTime = endTime;
trainingTime = 0;
} else {
trainingTime = ((endTime - startTime) / 1000).toFixed(2);
}
Data.epoch = epoch;
Data.loss = logs.loss;
Data.accuracy = logs.acc;
Data.lossData = lossData;
Data.accuracyData = accuracyData;
Data.trainingTime = trainingTime;
}
appExpress.get('/', (req, res) => {
res.sendFile(path.join(__dirname, 'views', 'loading.html'));
});
function getLayerVisualization(model) {
const layerVisualizations = model.layers.map((layer) => {
const weights = layer.getWeights();
const weightsArrayPromises = weights.map(tensor => tensor.array());
return Promise.all(weightsArrayPromises).then(weightsArray => {
return {
layerName: layer.name,
weights: weightsArray,
};
});
});
return Promise.all(layerVisualizations);
}
async function getModelInfo(model) {
const config = model.getConfig();
const layerVisualizationPromise = getLayerVisualization(model);
const layerVisualizations = await layerVisualizationPromise;
return {
config,
layerVisualizations,
};
}
appExpress.get('/data', async (req, res) => {
if (Data.model) {
Data.ModelInfo = await getModelInfo(Data.model);
}
res.json(Data);
});
appExpress.get('/model', async (req, res) => {
if (Data.model) {
res.sendFile(path.resolve(__dirname, './model/model.json'));
}
else {
res.status(404).send('Model not found');
}
});
appExpress.listen(3001, () => { });
module.exports = {
startElectronApp,
GenerateGraph,
updateGraph,
};