试论信息检索系统的后控制机制

首先基于对信息检索概念的理解与认知，提出检索系统的控制机制问题及其重要性;然后选择以“后控制”机制为重点，将其细分为三类不同的后控制方式，即查找前的提问式构造与扩展控制、查找中的检索过程控制、查找后的检索结果控制与优化，分别对它们给予分析和阐述，必要时辅以实例说明;最后对后控制问题的未来研究重点及方向进行简单讨论。

Discussion on Post-controlling Mechanism in Information Retrieval Systems

Based on the concept of information retrieval(IR), this paper brings up the issue of controlling mechanism in information retrieval system(IRS) and its importance. And then taking post-controlling mechanism of IRS as the key points, the paper gives a detailed exploration to the three kinds of post-controlling modes respectively, namely, query building and expansion before searching, retrieval process control, results control and perfection after searching with necessary examples. The focus and directions of post-controlling research are also discussed in the paper.