A Hybrid Quantum-Classical Fusion for Deep Semantic Paraphrase Detection
Devanarayanan K, Fayas S Mohamad, Dheeraj V Mohan, Reshma Sheik
Abstract
Paraphrase Detection is a core task in natural language processing (NLP) that aims to determine whether two sentences convey equivalent meanings. This work proposes a hybrid quantum–classical framework that integrates Sentence-BERT embeddings, simulated quantum feature encoding, and classical machine learning models to enhance semantic similarity detection. Initially, sentence pairs are embedded using Sentence-BERT and standardized through feature scaling. These representations are then transformed via rotation-based quantum circuits to capture higher-order feature interactions and non-linear dependencies. The resulting hybrid feature space, combining classical and quantum-inspired components, is evaluated using LightGBM and deep neural network classifiers. Experimental results show that the hybrid model incorporating quantum-inspired features achieved superior classification performance, yielding a 10% improvement in overall accuracy outperforming standalone deep learning baselines. These findings demonstrate that quantum–classical fusion enhances semantic feature extraction and significantly improves paraphrase detection performance.- Anthology ID:
- 2025.quantumnlp-1.4
- Volume:
- Proceedings of the QuantumNLP{:} Integrating Quantum Computing with Natural Language Processing
- Month:
- November
- Year:
- 2025
- Address:
- Mumbai, India (Hybrid)
- Editors:
- Santanu Pal, Partha Pakray, Priyanka Jain, Asif Ekbal, Sivaji Bandyopadhyay
- Venues:
- QuantumNLP | WS
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 20–25
- Language:
- URL:
- https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.quantumnlp-1.4/
- DOI:
- Cite (ACL):
- Devanarayanan K, Fayas S Mohamad, Dheeraj V Mohan, and Reshma Sheik. 2025. A Hybrid Quantum-Classical Fusion for Deep Semantic Paraphrase Detection. In Proceedings of the QuantumNLP{:} Integrating Quantum Computing with Natural Language Processing, pages 20–25, Mumbai, India (Hybrid). Association for Computational Linguistics.
- Cite (Informal):
- A Hybrid Quantum-Classical Fusion for Deep Semantic Paraphrase Detection (K et al., QuantumNLP 2025)
- PDF:
- https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.quantumnlp-1.4.pdf