Leveraging Self-Attention for Input-Dependent Soft Prompting in LLMs
Authors: name: Ananth Muppidi; name: Abhilash Nandy; name: Sambaran Bandyopadhyay
Published: 2025-06-05 23:13:22

Abstract: The performance of large language models in domain-specific tasks
necessitates fine-tuning, which is computationally expensive and technically
challenging. This paper focuses on parameter-efficient fine-tuning using soft
prompting, a promising approach that adapts pre-trained models to downstream
tasks by learning a small set of parameters. We propose a novel Input Dependent
Soft Prompting technique with a self-Attention Mechanism (ID-SPAM) that
generates soft prompts based on the input tokens and attends different tokens
with varying importance. Our method is simple and efficient, keeping the number
of trainable parameters small. We show the merits of the proposed approach
compared to state-of-the-art techniques on various tasks and show the improved
zero shot domain transfer capability.