指出情报元地位模型的错误并分析产生错误的原因，建立改进的情报元地位模型。
Points out the mistakes existing in the status model of information sources, analyzes the reasons which cause the mistakes, and establishes an improved status model of information sources.
本文还针对我国订单驱动型的股票市场，将BDSS模型中的相对价差进行调整，建立改进后的BDSS模型。
This article is also aimed at China's Order-driven stock market, adjustments the relative price Spread in BDSS model, set up the improved BDSS model.
文中从实际诊断中出发首次将IEC - 60599三比值故障诊断表编写成对应的逻辑编码表，然后应用粗糙集理论构造决策表并对决策表进行约简，最后建立改进的新导则IEC - 60599三比值故障诊断决策规则。
Firstly, a logical diagnostic table of IEC-60599 is presented, and a decision table can be constructed by applying the Rough Set Theory based on the IEC-60599 three-ratio fault diagnosis table.
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