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CRC Press eBooks

Quantum-Powered Hate Speech Detection

Kiran Sree Pokkuluri, Nithya Devi, Alex Khang

Published Aug 2, 2024• 1 citation
Publisher

Abstract

This study suggests a novel method for strengthening the detection of hate speech in online environments by incorporating quantum computing ideas into Recurrent Neural Networks (RNNs). Our approach takes advantage of the special characteristics of quantum bits, or qubits, to explore exponentially more information states concurrently, hence enabling a quantum parallelism advantage. Superior computing efficiency is demonstrated by this innovative Quantum-Powered Hate Speech Detection (QPHSD) framework when analyzing intricate linguistic patterns linked to hate speech. We show that the quantum-enhanced RNNs perform substantially faster and more accurately than their classical counterparts, addressing the increasing problems associated with online toxicity. The suggested model makes use of quantum parallelism to improve hate speech identification accuracy while also providing a viable path for scalable and real-time mitigation techniques that promote more inclusive and safe online communities.

DOI
10.1201/9781032642079-19

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Cyberattacks are increasing in sophistication. As a result, traditional cybersecurity systems based on classical computing and conventional deep-learning techniques are increasingly exhibiting limitations and vulnerabilities. Although deep-learning models offer substantial advantages over traditional methods for automated intrusion detection through large-scale security data analysis and pattern recognition, they suffer from notable constraints related to high-dimensional feature spaces, scalability, and stringent real-time inference requirements. This work proposes a quantum-enhanced deep learning (QEDL) framework for detecting and mitigating real-time cyberattack patterns. Quantum computing technologies—specifically quantum feature selection and quantum data encoding—are integrated into a classical–hybrid quantum deep-learning architecture. The quantum approximate optimization algorithm (QAOA) is employed for quantum feature selection to enable efficient identification of discriminative features from high-dimensional cybersecurity datasets. In addition, quantum data encoding exploits superposition and entanglement to process multiple complex inputs simultaneously. The resulting quantum feature representations are processed using parameterized quantum circuits (PQCs), followed by classical deep-learning layers for accurate threat classification. The proposed QEDL framework is evaluated using the CIC–IDS2017 dataset, and its performance is compared against classical deep-learning models and pure quantum neural networks. Experimental results demonstrate that, within the proposed hybrid quantum–classical framework, the QAOA-based feature selection strategy achieved higher classification performance than the evaluated classical feature selection methods under the reported experimental settings. In addition, the proposed framework exhibited improved generalization to previously unseen attacks. These findings suggest that the proposed hybrid quantum–classical framework is a promising approach for cyberattack detection under the experimental conditions considered in this study. The experiments in this study were simulated using IBM Aer backend, without physical quantum hardware. The results obtained in this study serve as a simulation-based proof of concept.
Emotion recognition in speech is essential for human-computer interaction. This study introduces a refined hybrid Quantum Convolutional Neural Network (QCNN) framework designed to substantially enhance Speech Emotion Recognition (SER). It addresses major challenges such as speaker variability, noise robustness, and cross-domain applicability that often limit classical deep learning models. By Utilizing quantum principles like superposition and entanglement within a 6-qubit, 8-layer parameterized circuit, the model derives highdimensional, noise-resistant features from speech signals. The method includes sophisticated preprocessing steps, such as bandpass filtering and energy-based Voice Activity Detection (VAD), followed by Mel-Frequency Cepstral Coefficients (MFCC) extraction. Evaluated on a diverse dataset of 4,515 samples across eight emotions (Angry, Calm, Disgust, Fear, Happy, Neutral, Sad, Surprised), the QCNN achieved an accuracy of 86 %, setting a new benchmark. It surpasses classical approaches such as a CNN with attention(77%)(77 \%)(77%), a traditional QCNN(77.87%)(77.87 \%)(77.87%), and a hybrid quantum-classical network(76%)(76 \%)(76%). The model demonstrated balanced performance, with precision scores ranging from 0.79 to 1.0 (including a perfect 1.0 for Fear) and recall scores from 0.82 to 0.94. These results underscore the promise of quantum-enhanced neural networks in capturing complex, nonlinear speech emotion patterns and establishing a new standard for robust, generalizable SER systems.