FPS: Feedforward-based Parameter Selection For Efficient Fine-Tuning

• URL: http://arxiv.org/abs/2510.27359v1
• Date: Fri, 31 Oct 2025 10:44:16 GMT
• Title: FPS: Feedforward-based Parameter Selection For Efficient Fine-Tuning
• Authors: Kenneth Yang, Wen-Li Wei, Jen-Chun Lin,
• Abstract summary: We propose Feedforward-based Selection (FPS) for fine-tuning pre-trained models.<n>FPS ranks parameters by the product of their magnitudes and corresponding input activations, leveraging both pre-trained knowledge and downstream data.<n>FPS achieves performance comparable to state-of-the-art methods while reducing peak memory usage by nearly $9 times$.
• Score: 10.272085741815921
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Parameter-Efficient Fine-Tuning (PEFT) has emerged as a key strategy for adapting large-scale pre-trained models to downstream tasks, but existing approaches face notable limitations. Addition-based methods, such as Adapters [1], introduce inference latency and engineering complexity, while selection-based methods like Gradient-based Parameter Selection (GPS) [2] require a full backward pass, which results in the same peak memory usage as full fine-tuning. To address this dilemma, we propose Feedforward-based Parameter Selection (FPS), a gradient-free method that identifies an optimal parameter subset in a single forward pass. FPS ranks parameters by the product of their magnitudes and corresponding input activations, leveraging both pre-trained knowledge and downstream data. Evaluated on $24$ visual tasks from FGVC and VTAB-1k, FPS achieves performance comparable to state-of-the-art methods while reducing peak memory usage by nearly $9 \times$ and accelerating parameter selection by about $2 \times$, offering a genuinely memory-efficient and practical solution for fine-tuning large-scale pre-trained models.

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