Variational Quantum Approximate Spectral Clustering for Binary Clustering Problems

• URL: http://arxiv.org/abs/2309.04465v1
• Date: Fri, 8 Sep 2023 17:54:42 GMT
• Title: Variational Quantum Approximate Spectral Clustering for Binary Clustering Problems
• Authors: Hyeong-Gyu Kim, Siheon Park, June-Koo Kevin Rhee
• Abstract summary: We introduce the Variational Quantum Approximate Spectral Clustering (VQASC) algorithm. VQASC requires optimization of fewer parameters than the system size, N, traditionally required in classical problems. We present numerical results from both synthetic and real-world datasets.
• Score: 0.7550566004119158
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In quantum machine learning, algorithms with parameterized quantum circuits (PQC) based on a hardware-efficient ansatz (HEA) offer the potential for speed-ups over traditional classical algorithms. While much attention has been devoted to supervised learning tasks, unsupervised learning using PQC remains relatively unexplored. One promising approach within quantum machine learning involves optimizing fewer parameters in PQC than in its classical counterparts, under the assumption that a sub-optimal solution exists within the Hilbert space. In this paper, we introduce the Variational Quantum Approximate Spectral Clustering (VQASC) algorithm - a NISQ-compatible method that requires optimization of fewer parameters than the system size, N, traditionally required in classical problems. We present numerical results from both synthetic and real-world datasets. Furthermore, we propose a descriptor, complemented by numerical analysis, to identify an appropriate ansatz circuit tailored for VQASC.

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