Abstract
To design and develop an approach named HC+SMA-SSA scheme for classifying motor imagery task. The offered model employs a new method for classifying motor imagery task. Initially, down sampling is deployed to pre-process the incoming signal. Subsequently, "Modified Stockwell Transform (ST) and common spatial pattern (CSP) based features are extracted". Then, optimal channel selection is made by a novel hybrid optimization model named as Spider Monkey Assisted SSA (SMA-SSA). Here, "Long Short Term Memory (LSTM) and Bidirectional Gated Recurrent Unit (BI-GRU)" models are used for final classification, whose outcomes are averaged at the end. At last, the improvement of SMA-SSA based model is proven over different metrics. A superior sensitivity of 0.939 is noted for HC+SMA-SSA that was higher over HC with no optimization and proposed with traditional ST. The proposed method achieved effective classification performance in terms of performance measures.
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