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Machine Intelligence on the Edge: Interpretable Cardiac Pattern Localisation Using Reinforcement Learning

Primary research

#924

T1new
Topic
unassigned (set during synthesis)
First seen
2026-07-29 07:17:47
Last seen
2026-07-29 07:17:47

Source raw items (1)

  • arXiv2026-07-29 07:17:09
    Machine Intelligence on the Edge: Interpretable Cardiac Pattern Localisation Using Reinforcement Learning

    Matched filters are widely used to localise signal patterns due to their high efficiency and interpretability. However, their effectiveness deteriorates for low signal-to-noise ratio (SNR) signals, such as those recorded on edge devices, where prominent noise patterns can closely resemble the target within the limited length of the filter. One example is the ear-electrocardiogram (ear-ECG), where the cardiac signal is attenuated and heavily corrupted by artefacts. To address this, we propose the Sequential Matched Filter (SMF), a paradigm that replaces the conventional single matched filter with a sequence of filters designed by a Reinforcement Learning agent. By formulating filter design as a sequential decision-making process, SMF adaptively design signal-specific filter sequences that remain fully interpretable by revealing key patterns driving the decision-making. The proposed SMF framework has strong potential for reliable and interpretable clinical decision support, as demonstrated by its state-of-the-art R-peak detection and physiological state classification performance on two challenging real-world ECG datasets. The proposed formulation can also be extended to a broad range of applications that require accurate pattern localisation from noise-corrupted signals.