ODS(Operational Data Store) 对于Multidimensional数据模型data Cube有如下分析方法 数据立方体(Data Cube)是一种多维数据结构,它存储了各种维度和度量的交叉组合。在数据立方体上可以应用多种分析方法来探索数据并获取洞察。以下是一些常见的数据立方体分析方法: 切片(Slice):切片是选择数据立方体中某个或某些维度上的特定...
// 假设已有Datacube实例datacubeCube cube = datacube.createCube("sales", "product_id", "sale_date", "quantity");// 加载数据cube.load(data);// 执行聚合操作AggregationResult result = cube.aggregate("product_id", "MONTH(sale_date)", Sum.of("quantity"));// 输出结果System.out.println(res...
3.4.9 Data Cube Aggregation Imagine that you have collected the data for your analysis. These data consist of the AllElectronics sales per quarter, for the years 2008 to 2010. You are, however, interested in the annual sales (total per year), rather than the total per quarter. Thus, the...
A Data cube as its name suggests is an extension of 2-Dimensional data cube or 2-dimensional matrix (column and rows) Whenever there are lots of complex data to be aggregated and there is a need to abstract the relevant or important data. There comes into picture the need for the data ...
CubeDimensionPermissionCollection CubeHierarchy CubeHierarchyCollection CubePermission CubePermissionCollection DataAggregationMode 数据库 数据库 构造函数 属性 方法 显式接口实现 DatabaseCollection DatabasePermission DatabasePermissionCollection DataEmbeddingStyle DataEncodingHint DataItem DataItemCollection DataItemTypeConve...
子元素 Accounts、 AggregationPrefix、 注釋、 元件、定 序、 CreatedTimestamp、 cube、 DatabasePermissions、資料 源、 DataSourceViews、 描述、 維度、 EstimatedSize、 ID、 Language、 LastProcessed、 LastSchemaUpdate、 LastUpdate、 MasterDatasourceID、 MiningStructures、 名稱、 角色、 狀態、 翻譯、 可見...
ConceptsandTechniques4EfficientComputationofDataCubes Preliminarycubecomputationtricks(Agarwaletal.‟96) Computingfull/icebergcubes:3methodologies Top-Down:Multi-Wayarrayaggregation(Zhao,Deshpande&Naughton,SIGMOD‟97) Bottom-Up: Bottom-upcomputation:BUC(Beyer&Ramarkrishnan,SIGMOD‟99) H-cubingtechnique(Han...
Data Cube Aggregation:This method involves aggregating data at different levels of granularity, such as summarizing data at higher levels (e.g., months instead of days) to reduce the dataset’s size. This is often used in OLAP (Online Analytical Processing) and multidimensional data analysis. ...
dynamically compute cube cells of the high-dimensional data cube online Example Computation Let the cube aggregation function be count Divide the 5 dimensions into 2 shell fragments: (A, B, C) and (D, E) 1-D Inverted Indices Build traditional invert index or RID list Shell Fragment Cubes Ge...
~~~ 为了缓解 Cube 的构建压力,Apache Kylin 引入了一系列的高级设置, ~~~ 帮助用户筛选出真正需要的 Cuboid(本质是要减少Cube构建过程中的预计算)。 1. 2. 3. 4. 5. ### --- 这些高级设置包括: ~~~ 聚合组(Aggregation Group) ~~~ 强制维度(Mandatory Dimension) ...