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博客园 - anchky

招聘.Net或者Php工程师(可兼职) AMO添加维度属性、层次结构 求Tech·Ed 2007微软技术大会,上海站的票一张 在杭州的日子,每天数据挖掘 - anchky - 博客园 推荐Minesage的BI原创资源 OLAP项目的一般过程 Code For MiningStructure 分解分析树,KPIs 用OWC展示多维数据集 MDX函数使用介绍(四):字符串函数&元组函数 在2005中使用DrillThrough函数 MDX函数使用介绍(三):聚合函数 在AS2005的From子句中使用Select从句 MDX 函数的使用介绍(二):数值函数 文摘 MDX Solutions 通过http访问AS的server端配置(AS2000) MDX 函数的使用介绍(一) Some Digest From MDX Solution 推荐一个Blog“Microsoft SQL Server Development Customer Advisory Team”
DataMining Digest
anchky · 2007-02-02 · via 博客园 - anchky

Digest Of DataMining With SQLServer 2005o_01.JPG

1.        There are two kinds of data mining techniques: supervised and unsupervised. Supervised data mining requires the user to specify a target attribute and a set of input attributes. The typical supervised data mining algorithms include decision trees, Naïve Bayes, and neural networks. An unsupervised data mining technique doesn’t have to have a predictable attribute. Clustering is a good example of unsupervised data mining. It groups heterogeneous data points into subgroups so that data points in each subgroup are more or less homogeneous.

2.        The OLAP mining model often contains nested tables. The case table of an OLAP mining model is always one of the dimensions and nested tables always come from one of the fact tables using a another dimension attribute as the nested key.

3.        Mining models defined based on a relational source and a multidimensional source have the same structure and metadata. The only difference is the way the models are bound to data and processed. In fact, a model created and processed with relational tables can be reprocessed with new bindings to a cube.

4.        SSIS Transforms

o_02.JPG

5.        Tasks and Transforms for Data Mining