Efficient Quantum Feature Extraction for CNN-based Learning

• URL: http://arxiv.org/abs/2201.01246v1
• Date: Tue, 4 Jan 2022 17:04:07 GMT
• Title: Efficient Quantum Feature Extraction for CNN-based Learning
• Authors: Tong Dou, Guofeng Zhang, and Wei Cui
• Abstract summary: We propose a quantum-classical deep network structure to enhance classical CNN model discriminability. We build PQC, which is a more potent function approximator, with more complex structures to capture the features within the receptive field. The results disclose that the model with ansatz in high expressibility achieves lower cost and higher accuracy.
• Score: 5.236201168829204
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recent work has begun to explore the potential of parametrized quantum circuits (PQCs) as general function approximators. In this work, we propose a quantum-classical deep network structure to enhance classical CNN model discriminability. The convolutional layer uses linear filters to scan the input data. Moreover, we build PQC, which is a more potent function approximator, with more complex structures to capture the features within the receptive field. The feature maps are obtained by sliding the PQCs over the input in a similar way as CNN. We also give a training algorithm for the proposed model. The hybrid models used in our design are validated by numerical simulation. We demonstrate the reasonable classification performances on MNIST and we compare the performances with models in different settings. The results disclose that the model with ansatz in high expressibility achieves lower cost and higher accuracy.

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