Appliance event detection based on the log likelihood ratio test.
The algorithm is based on work from Pereira et al. [1] and Völker et al. [2] Instead of just finding events, these are also clustered to set a preliminary label to similar events.
You can see an example result here:
[1] Pereira, L., (2017). Developing and evaluating a probabilistic event detector for non-intrusive load monitoring. In 2017 Sustainable Internet and ICT for Sustain- ability (SustainIT). IEEE, 1–10.
[2] Völker, B., (2020). Annoticity: A Smart Annotation Tool and Data Browser for Electricity Datasets. 2020 5th International Workshop on Non-Intrusive Load Monitoring, ACM.