This research explores methods for integrating specialized knowledge into large language models to overcome their limitations in domain-specific applications.

• LLMs show impressive general capabilities but lack effectiveness in specialized domains like healthcare
• Domain-specific knowledge injection enhances LLM performance in fields requiring expert knowledge
• Multiple approaches exist across medical, legal, biology, education, and security domains
• For medical applications, knowledge injection addresses critical gaps in healthcare expertise, improving diagnostic accuracy and treatment recommendations

Injecting Domain-Specific Knowledge into Large Language Models: A Comprehensive Survey