【摘要】第3章數(shù)據(jù)挖掘的數(shù)據(jù)倉(cāng)庫(kù)與OLAP技術(shù)2第3章:數(shù)據(jù)挖掘的數(shù)據(jù)倉(cāng)庫(kù)與OLAP技術(shù)?什么是數(shù)據(jù)倉(cāng)庫(kù)??多維數(shù)據(jù)模型?數(shù)據(jù)倉(cāng)庫(kù)結(jié)構(gòu)?數(shù)據(jù)倉(cāng)庫(kù)實(shí)現(xiàn)?數(shù)據(jù)立方體的進(jìn)一步發(fā)展?從數(shù)據(jù)倉(cāng)庫(kù)到數(shù)據(jù)挖掘3什么是數(shù)據(jù)倉(cāng)庫(kù)??有不同的方法定義,但不是嚴(yán)格的.?是一個(gè)決策支持?jǐn)?shù)據(jù)庫(kù)
2024-10-19 19:44
【摘要】第1講數(shù)據(jù)倉(cāng)庫(kù)概述1數(shù)據(jù)倉(cāng)庫(kù)概述數(shù)據(jù)倉(cāng)庫(kù)產(chǎn)生的原因數(shù)據(jù)倉(cāng)庫(kù)的基本概念數(shù)據(jù)倉(cāng)庫(kù)的體系結(jié)構(gòu)2數(shù)據(jù)倉(cāng)庫(kù)概述數(shù)據(jù)倉(cāng)庫(kù)產(chǎn)生的原因?操作型數(shù)據(jù)處理?分析型數(shù)據(jù)處理?兩種數(shù)據(jù)處理模式的差異?數(shù)據(jù)庫(kù)系統(tǒng)的局限性3兩者有何不同??數(shù)據(jù)庫(kù):存放數(shù)據(jù)的地方。
2025-03-09 09:07
【摘要】1、數(shù)據(jù)預(yù)處理的意義2、數(shù)據(jù)清理3、數(shù)據(jù)集成與變換4、數(shù)據(jù)歸約第三章數(shù)據(jù)預(yù)處理1、數(shù)據(jù)質(zhì)量問(wèn)題:?噪聲數(shù)據(jù)?空缺數(shù)據(jù)?不一致數(shù)據(jù)第一節(jié)數(shù)據(jù)預(yù)處理的意義預(yù)處理數(shù)據(jù)提高數(shù)據(jù)質(zhì)量提高挖掘結(jié)果2、數(shù)據(jù)預(yù)處理的基本方法:?數(shù)據(jù)清理
2025-03-09 09:10