基于专利数据仓库的技术功效图挖掘方法研究* ——以3D打印技术为例
翟东升, 蔡力伟, 张杰, 冯秀珍

The Study of Patent Data Warehouse-based Technical Efficiency Map Mining Method——Taking 3D Printing Technology as an Example
Zhai Dongsheng, Cai Liwei, Zhang Jie, Feng Xiuzhen