目的 通过构建健身产品专利知识图谱的方法来解决如何快速定义产品研发目标，确定产品创新设计方向。方法 依据知识产权局公开专利数据库，用TF-IDF算法归纳近十年健身产品领域专利热点

The work aims to solve the problem of how to quickly define the needs of product research and development and determine the innovative design direction of new products by the method of constructing the patent knowledge graph of fitness products. Based on the public patent database of the Intellectual Property Office, the TF-IDF algorithm was used to summarize the hot