Define the prediction task
Decide the inputs (sensors, camera, magnets), the output label (occupied/unoccupied) and the evaluation metric such as per-bay F1 and latency under target hardware constraints.
Detect parking availability. Assess model latency.
A smart parking availability detector predicts whether a parking bay is free using inputs such as sensor telemetry or camera-derived features. Important engineering concerns include small-model latency, memory footprint for edge devices, reliable labelled data for different bay types and robust handling of missing or noisy inputs.
Learning concept · Not a validated service
A smart parking availability detector predicts whether a parking bay is free using inputs such as sensor telemetry or camera-derived features. Important engineering concerns include small-model latency, memory footprint for edge devices, reliable labelled data for different bay types and robust handling of missing or noisy inputs.
A proposed application: provide bay-level availability signals to a parking guidance system that suggests nearby free bays. For safety and service quality, a human operator or back-end validation should remain in charge for high-stakes or monetised decisions; the supplied starter does not implement that integration.
Decide the inputs (sensors, camera, magnets), the output label (occupied/unoccupied) and the evaluation metric such as per-bay F1 and latency under target hardware constraints.
Record representative sensor streams or annotated camera frames across times, weather and bay types; reserve a hold-out set for final evaluation.
Train a compact classifier, measure per-sample latency and memory footprint on target edge hardware, and iterate on preprocessing to handle missing values.
Export a quantised model (TFLite/ONNX), add telemetry for drift and input quality, and define rollback and update procedures.
The supplied starter creates a synthetic classification dataset with sklearn.make_classification, fits a DecisionTreeClassifier, times repeated predictions on a single synthetic sample and prints latency and tree statistics. It does not use parking sensors, camera frames, or real telemetry and contains no IoT connectivity or edge runtime code.
X, y = make_classification(n_samples=1000, n_features=12, n_informative=8, random_state=42)
model = DecisionTreeClassifier(max_depth=6, random_state=42)
model.fit(X, y)
sample = X[:1]
start = time.perf_counter()The code uses purely synthetic features from make_classification and generic labels; these are not sensor or image features from parking bays. There is no data collection, labelling, or edge-deployment code (MQTT, device I/O, quantisation or runtime). The tiny latency micro-benchmark on repeated in-memory predictions is not equivalent to measuring end-to-end edge latency.
A proposed extension: collect per-bay magnet/sensor telemetry or annotated camera frames for a small parking area, train a compact classifier, and deploy it as a TFLite model on a low-power device that publishes occupancy via MQTT.
This is a potential application pathway, not a delivered product. The supplied starter does not implement this service or validate it with real users.
Networkers Home runs this topic inside its Network Engineering Course, with placement support and hands-on labs.