有偿信息源与免费信息源在产品科技查新中的比较和选择

针对产品查新实践中存在的问题,从数据质量与完整性、数据收录重点、数据的时效性、检索方式与检索语言4个方面,对产品科技查新中涉及的有偿信息源和免费信息源进行了比较分析,指出优化选择各种信息源是提高产品查新查全率与查准率的有力保障。

Comparative Selection of the Paid Information Resource and the Free Information Resource Used in Sci-tech Novelty Retrieval of Products

According to the problems existing in the practice of novelty retrieval of products, this paper makes the comparative analysis on the paid information resource and the free information resource used in the novelty retrieval of products from four aspects of the data quality and integrity, data acquisition emphases, data timeliness, and retrieval mode and retrieval language, and points out that the optimal selection of various information resources is a strong guarantee for improving the recall ratio and prec...