In this paper, the problem of discovering association rules between items in a large database of sales transactions is discussed, and a novel algorithm, BitMatrix, is proposed. The proposed algorithm is fundamentally ...In this paper, the problem of discovering association rules between items in a large database of sales transactions is discussed, and a novel algorithm, BitMatrix, is proposed. The proposed algorithm is fundamentally different from the known algorithms Apriori and AprioriTid. Empirical evaluation shows that the algorithm outperforms the known ones for large databases. Scale-up experiments show that the algorithm scales linearly with the number of transactions.展开更多
目的:通过数据挖掘总结稳定型心绞痛的证候分布特点及组方用药规律。方法:搜索国家知识基础设施数据库(CNKI)、中国学术期刊数据库(CSPD)、中文科技期刊数据库(CCD)、PubMed、Web of Science数据库从建库至2022年2月收录的有关中医药治...目的:通过数据挖掘总结稳定型心绞痛的证候分布特点及组方用药规律。方法:搜索国家知识基础设施数据库(CNKI)、中国学术期刊数据库(CSPD)、中文科技期刊数据库(CCD)、PubMed、Web of Science数据库从建库至2022年2月收录的有关中医药治疗稳定型心绞痛的相关文献,建立方药数据库,并对高频药物进行关联规则及系统聚类分析。结果:共纳入文献105篇,处方111首,涉及患者9 786例,涵盖中医证型21种,频次最高证型为气虚血瘀,共提取出7个病性证素和2个病位证素。涉及中药123味,共计使用频次1 162次,使用频次前5位的中药分别是丹参70次、川芎69次、甘草54次、黄芪53次、当归50次。前30味高频药物关联规则分析显示,支持度最高的前3位药对为川芎-当归、川芎-赤芍、川芎-红花,聚类分析得到4个药物核心组合。结论:稳定型心绞痛常见气虚血瘀、痰瘀互结、气滞血瘀证;病性证素以实性居多,常见血瘀、痰浊,虚性证素主要为气虚;用药主要以活血化瘀、理气通滞、化痰降浊、益气通脉为法,是现代中医治疗稳定型心绞痛的主导思想。展开更多
基金This work was supported in part by the National '863' High-Tech Programme of China !(No.863-306-ZD06-2)
文摘In this paper, the problem of discovering association rules between items in a large database of sales transactions is discussed, and a novel algorithm, BitMatrix, is proposed. The proposed algorithm is fundamentally different from the known algorithms Apriori and AprioriTid. Empirical evaluation shows that the algorithm outperforms the known ones for large databases. Scale-up experiments show that the algorithm scales linearly with the number of transactions.
文摘目的:通过数据挖掘总结稳定型心绞痛的证候分布特点及组方用药规律。方法:搜索国家知识基础设施数据库(CNKI)、中国学术期刊数据库(CSPD)、中文科技期刊数据库(CCD)、PubMed、Web of Science数据库从建库至2022年2月收录的有关中医药治疗稳定型心绞痛的相关文献,建立方药数据库,并对高频药物进行关联规则及系统聚类分析。结果:共纳入文献105篇,处方111首,涉及患者9 786例,涵盖中医证型21种,频次最高证型为气虚血瘀,共提取出7个病性证素和2个病位证素。涉及中药123味,共计使用频次1 162次,使用频次前5位的中药分别是丹参70次、川芎69次、甘草54次、黄芪53次、当归50次。前30味高频药物关联规则分析显示,支持度最高的前3位药对为川芎-当归、川芎-赤芍、川芎-红花,聚类分析得到4个药物核心组合。结论:稳定型心绞痛常见气虚血瘀、痰瘀互结、气滞血瘀证;病性证素以实性居多,常见血瘀、痰浊,虚性证素主要为气虚;用药主要以活血化瘀、理气通滞、化痰降浊、益气通脉为法,是现代中医治疗稳定型心绞痛的主导思想。
