Relation F1 Score (Strict Entity-Pair Matching) is an important evaluation metric in the field of natural language processing for information extraction / named entity recognition tasks. Strict Relation F1 requires that both the relation type and the entity pair be completely correct to count as a match, measuring the ability to extract complete relation triples. It is typically reported as a percentage or a score between 0 and 1. This metric is widely used in related benchmarks and papers, effectively reflecting model performance in this dimension. Higher values are better.