Fig. 5: The f-MDPE-based hardware system for ECG heartbeat diagnosis. | Nature Communications

Fig. 5: The f-MDPE-based hardware system for ECG heartbeat diagnosis.

From: Flexible self-rectifying synapse array for energy-efficient edge multiplication in electrocardiogram diagnosis

Fig. 5

a Schematics of in-situ inference with a pretrained f-MDPE array for ECG diagnosis. b Pretrained weight matrix of a 32 × 5 sized network, using positive and negative weights separately. c Target current at 3 V of the transferred weight matrix in (b). d Measured current at 3 V of the pretrained f-MDPE array. e Error distribution between the target and measured currents at each single point. f Summed output currents for the given input heartbeats from the MIT-BIH heartbeat dataset represented as N, S, V, Q, and F. The neuron indicating each heartbeat has the highest output current, indicating a correct classification. g, h Confusion matrices of the network for 5-category classification (g) and normal/abnormal classification (h).

Back to article page