Bugfix: Fix Brain.js training issues

server/train-ai/AITrainer.mjs

@@ -82,10 +82,13 @@ class AITrainer {
 			learningRate: this.settings.ai.learning_rate,
 			momentum: this.settings.ai.momentum,
 			
+			log: true,
+			logPeriod: 50,
+			
 			timeout: Infinity
 		});
 		
-		await fs.promises.writeFile(destination_filename, net.toJSON());
+		await fs.promises.writeFile(destination_filename, JSON.stringify(net.toJSON()));
 		// console.log(result);
 		
 		return true;

server/train-ai/DatasetFetcher.mjs

@@ -42,10 +42,12 @@ class DatasetFetcher {
 			
 			// console.log(`Distance from gateway: ${haversine(gateway_location, rssi)}m`);
 			
-			let next_output = clamp(normalise(rssi.rssi,
-				{ min: this.settings.ai.rssi_min, max: this.settings.ai.rssi_max },
-				{ min: 0, max: 1 }
-			), 0, 1);
+			let next_output = [
+				clamp(normalise(rssi.rssi,
+					{ min: this.settings.ai.rssi_min, max: this.settings.ai.rssi_max },
+					{ min: 0, max: 1 }
+				), 0, 1)
+			];
 			
 			result.push({
 				input: next_input,
@@ -58,11 +60,16 @@ class DatasetFetcher {
 				reading.latitude,
 				reading.longitude
 			);
-			next_input.distance = haversine(gateway_location, reading);
+			next_input.distance = clamp(
+				normalise(haversine(gateway_location, reading),
+					{ min: 0, max: 20000 },
+					{ min: 0, max: 1 }
+				),
+			0, 1);
 			
 			result.push({
 				input: next_input,
-				output: 0
+				output: [ 0 ]
 			});
 		}