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Generally, data mining (sometimes called data or knowledge discovery) is the process of analyzing data from different perspectives and (1) it into useful information information that can be used to increase revenue, (2) costs, or both. Data mining software is one of a number of analytical tools for analyzing data. It (3) users to analyze data from many different dimensions or angles, categorize it, and summarize the relationships identified. Technically, data mining is the process of finding correlations or patterns among dozens of fields in large relational databases. Although data mining is a (4) new term, the technology is not. Companies have used powerful computers to sift through volumes of supermarket scanner data and analyze market research reports for years. However, continuous innovations in computer processing power, disk storage, and statistical software are dramatically increasing the accuracy of analysis while driving (5) the cost. (4)
简述中断控制器8259A的主要功能。
张某在2001年进入某有限责任公司工作，2007年该公司因经营不善而协议解散。在此期间，甲与其所在公司都按照规定缴纳了相应的社会保险费用。 用人单位缴纳医疗保险的比例应控制在职工工资总额的( )。
图的存储结构主要有邻接表和 (1) ，若用邻接表来存储一个图，则需要保存一个 (2) 存储的结点表和若干个 (3) 存储的关系表(又称边表)。 (1) （）
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