Beyond Content Relevance: Evaluating Instruction Following in Retrieval Models

• URL: http://arxiv.org/abs/2410.23841v1
• Date: Thu, 31 Oct 2024 11:47:21 GMT
• Title: Beyond Content Relevance: Evaluating Instruction Following in Retrieval Models
• Authors: Jianqun Zhou, Yuanlei Zheng, Wei Chen, Qianqian Zheng, Zeyuan Shang, Wei Zhang, Rui Meng, Xiaoyu Shen,
• Abstract summary: This study evaluates the instruction-following capabilities of various retrieval models beyond content relevance. We develop a novel retrieval evaluation benchmark spanning six document-level attributes. Our findings reveal that while reranking models generally surpass retrieval models in instruction following, they still face challenges in handling certain attributes.
• Score: 17.202017214385826
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Instruction-following capabilities in large language models (LLMs) have significantly progressed, enabling more complex user interactions through detailed prompts. However, retrieval systems have not matched these advances, most of them still relies on traditional lexical and semantic matching techniques that fail to fully capture user intent. Recent efforts have introduced instruction-aware retrieval models, but these primarily focus on intrinsic content relevance, which neglects the importance of customized preferences for broader document-level attributes. This study evaluates the instruction-following capabilities of various retrieval models beyond content relevance, including LLM-based dense retrieval and reranking models. We develop InfoSearch, a novel retrieval evaluation benchmark spanning six document-level attributes: Audience, Keyword, Format, Language, Length, and Source, and introduce novel metrics -- Strict Instruction Compliance Ratio (SICR) and Weighted Instruction Sensitivity Evaluation (WISE) to accurately assess the models' responsiveness to instructions. Our findings reveal that while reranking models generally surpass retrieval models in instruction following, they still face challenges in handling certain attributes. Moreover, although instruction fine-tuning and increased model size lead to better performance, most models fall short of achieving comprehensive instruction compliance as assessed by our benchmark.

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