Quantum-PEFT: Ultra parameter-efficient fine-tuning

• URL: http://arxiv.org/abs/2503.05431v1
• Date: Fri, 07 Mar 2025 14:01:25 GMT
• Title: Quantum-PEFT: Ultra parameter-efficient fine-tuning
• Authors: Toshiaki Koike-Akino, Francesco Tonin, Yongtao Wu, Frank Zhengqing Wu, Leyla Naz Candogan, Volkan Cevher,
• Abstract summary: Quantum-PEFT exploits an underlying full-rank yet surprisingly parameter efficient quantum unitary parameterization.<n>We show that Quantum-PEFT achieves vanishingly smaller number of trainable parameters than the lowest-rank LoRA as dimensions grow.<n>We apply Quantum-PEFT to several transfer learning benchmarks in language and vision, demonstrating significant advantages in parameter efficiency.
• Score: 46.145294417722184
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: This paper introduces Quantum-PEFT that leverages quantum computations for parameter-efficient fine-tuning (PEFT). Unlike other additive PEFT methods, such as low-rank adaptation (LoRA), Quantum-PEFT exploits an underlying full-rank yet surprisingly parameter efficient quantum unitary parameterization. With the use of Pauli parameterization, the number of trainable parameters grows only logarithmically with the ambient dimension, as opposed to linearly as in LoRA-based PEFT methods. Quantum-PEFT achieves vanishingly smaller number of trainable parameters than the lowest-rank LoRA as dimensions grow, enhancing parameter efficiency while maintaining a competitive performance. We apply Quantum-PEFT to several transfer learning benchmarks in language and vision, demonstrating significant advantages in parameter efficiency.

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