ResoFilter: Fine-grained Synthetic Data Filtering for Large Language Models through Data-Parameter Resonance Analysis

TL;DR

ResoFilter is a novel method that uses data-parameter resonance analysis during fine-tuning to select high-quality synthetic data, improving LLM training efficiency and generalization across tasks and domains.

Contribution

It introduces a new data filtering technique based on model weights that enhances synthetic data quality assessment for large language models.

Findings

Achieves comparable performance with half the data in mathematical tasks.

Demonstrates strong cross-model and cross-domain generalization.

Provides interpretability through data-parameter features.

Abstract

Large language models (LLMs) have shown remarkable effectiveness across various domains, with data augmentation methods utilizing GPT for synthetic data generation becoming prevalent. However, the quality and utility of augmented data remain questionable, and current methods lack clear metrics for evaluating data characteristics. To address these challenges, we propose ResoFilter, a novel method that integrates models, data, and tasks to refine datasets. ResoFilter leverages the fine-tuning process to obtain Data-Parameter features for data selection, offering improved interpretability by representing data characteristics through model weights. Our experiments demonstrate that ResoFilter achieves comparable results to full-scale fine-tuning using only half the data in mathematical tasks and exhibits strong generalization across different models and domains. This method provides valuable insights for constructing synthetic datasets and evaluating high-quality data, offering a promising solution for enhancing data augmentation techniques and improving training dataset quality for LLMs. For reproducibility, we will release our code and data upon acceptance.