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Kayi (cauterization), also known as wasm is part of ilāj-bil-tadbīr described in Unani medicine. Many Unani scholars believe kayi to be the most effective mode of treatment in certain disorders. Despite carrying some risks, the therapy was widely practiced and propagated by a number of Unani scholars, with excellent results. Kayi remains one of the largely unexplored areas in modern times. However, a few recent studies have acknowledged its efficacy in certain disorders, which necessitate further scientific studies on the subject. It is also a remarkable observation that a therapy described hundreds of years ago has proved its efficacy on the most recent parameters in modern times. The credit definitely goes to the Unani surgeons of yesteryears who had the courage to take up a difficult procedure and develop it to perfection

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Adversaries and anti-social elements have exploited the rapid proliferation of computing technology and online social media in the form of novel security threats, such as fake profiles, hate speech, social bots, and rumors. The hate speech problem on online social networks (OSNs) is also widespread. The existing literature has machine learning approaches for hate speech detection on OSNs. However, the effectiveness of contextual information at different orientations is understudied. This study presents a novel Convolutional, BiGRU, and Capsule network-based deep learning model, HCovBi-Caps, to classify the hate speech. The proposed model is evaluated over two Twitter-based benchmark datasets -DS1(balanced) and DS2(unbalanced) with the best performance of 0.90, 0.80, and 0.84 respectively considering precision, recall, and f-score over unbalanced dataset. In terms of training and validation accuracy, the proposed model shows the best performance of 0.93 and 0.90, respectively, over the unbalanced dataset. In comparative evaluation, HCovBi-Caps demonstrates a significantly better performance than state-of-the-art approaches. In addition, HCovBi-Caps shows comparatively better performance over the unbalanced dataset. We also investigate the impact of different hyperparameters on the efficacy of HCovBi-Caps to ascertain the selection of their values. We observed that a higher value of routing iterations adversely affects the model performance, whereas a higher value of capsule dimension improves the performance.