International Joint Research on Comparative Knowledge Analysis of CISG

在本研究中，美国、德国和日本的法律的专家与人工智能领域的法律的研究者共同厘清了《联合国国际货物销售合同公约》（CISG）的知识结构。从比较法的角度，根据各国的解释理论，对得出《销售公约》适用于案例的结果的推理过程进行了审查。并将法律的人工智能的研究成果应用到CISG的分析中。因此，澄清了在对案件的法律解释和适用方面存在国际差异的原因。关于涉及《销售公约》第49条的宣告合同无效的权利问题，很明显，上述差异源于在证明过程中增加的解释建议的差异，即条款表述所施加的限制的范围设定的差异以及对适用法律的结果的估计的差异。此外，已明确指出，成文法国家的专家作出灵活解释，而不是根据普通法作出解释，而且《销售公约》方面的专家具有共同的倾向。该知识结构已被安装到法律的知识库系统中，推理过程中的差异已能够在系统上显示。

In this research, the knowledge structure of the United Nations Convention on Contracts for the International Sale of Goods (CISG) has been clarified by American, German and Japanese legal experts on this law and researchers on legal artificial intelligence jointly. The reasoning processes concluding the results of the applications of the CISG to cases were examined on the basis of the interpretation theories in each country from the viewpoint of comparative law. And the research results of legal artificial intelligence were applied to the analysis of the CISG. As a result, the reasons for the international differences in interpretations and applications of law to cases have been clarified. On the problem of the right to avoid a contract concerning Article 49 of the CISG, it has become clear that the above differences originate in differences in the interpretation propositions added in the process of the justification, i.e. differences in scopes settings of restrictions imposed by the expressions of the provisions and differences in estimates of results of the applications of law. In addition, it has been made clear that experts in statute law states put flexible interpretations rather than experts on the basis of common law, and that the experts on the CISG have a common disposition. The clarified knowledge structure has been installed into the legal knowledge base system, and differences in the reasoning processes have been able to be demonstrated on the system.