试论冶金专业服务平台检索式之构建

ON SEARCH STRATEGIES OF THE METALLURGICAL INFORMATION DATABASE

探讨了提高冶金专业服务平台检索式的查全率、查准率以及构建检索式的一些技巧，得出了查全率和查准率两者兼顾的原则。当某一概念检索出来的结果较多时，要侧重于查准，避免检索式过于冗长，而当某一概念检索出来的结果较少时，要侧重于查全；上、下级类目存在汇集型或概括型关系，依据关系类型，构建相应的检索式；检索式的构建要建立在掌握专业知识的基础之上；不断试检索是构建简明、科学检索式的有效途径；检索式的复查和调整不可忽视。

In this paper, methods of improving recall rate and precision rate and other skills for constructing search strategies are discussed. Following conclusions are given： recall rate and precision rate are all very important. The principle of treating them is that when search results are more, we should Focus on precision rate; when search results are less, recall rate should be attached importance to. There are two relationships between upper and lower key words, i.e. influx type and sum up type. Search strategies should be constituted depending on the different relationship types. Professional knowledge is helpful to constructing search strategies. Continuous testing at search is a very efficient way to construct simple and scientific search strategies. It can＇ t be ignored to back-check and adjust search strategies.