关键词: 专家意见, 证明力评价, 推论型式

Abstract: The unclear connotation of probative value of evidence is the root cause of confusion in evaluating the probative value of expert opinions. The probative value of an evidence includes two aspects: credibility and probative force. The hybrid inference scheme of expert opinions combines credibility inference and probative force inference. The argument form for evaluating credibility conforms to the syllogism deduction structure of the expert opinion generation process, and the story scheme for evaluating probative force is based on the essence of probative force, that is, comparing the probability of the evidence appearing in competitive stories. The hybrid inference scheme is a generalization of expert opinion evaluation with defeasibility, and critical questions that match the inference scheme can invalidate arguments that conform to the inference scheme. In order to avoid bearing the potential adverse litigation consequences caused by proof evaluation, both parties should dynamically use critical questions to complete the tactical burden of proof.

Key words: expert opinion, evaluation of probative value, inference scheme