International Joint Research on Comparative Knowledge Analysis of CISG

在本研究中，美国、德国和日本的法律专家以及法律人工智能研究人员共同对《联合国国际货物销售合同公约》（CISG）的知识结构进行了梳理。从比较法的观点出发，以各国的解释理论为基础，考察了总结《销售公约》适用案件结果的推理过程。并将法律人工智能的研究成果应用于《销售公约》的分析。因此，在对案件的法律解释和适用方面存在国际差异的原因得到了澄清。关于关于《销售公约》第49条的合同回避权问题，很明显，上述分歧是由于在辩护过程中增加的解释主张的不同，即在范围、规定的表达所施加的限制的不同以及对法律适用结果的估计的不同。此外，已经明确的是，成文法国家的专家提出灵活的解释，而不是以普通法为基础的专家，而且《销售公约》的专家具有共同的处置。明确的知识结构已被安装到法律知识库系统中，并且推理过程中的差异已经能够在系统上得到展示。

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.