BI-SSAS简介篇
一、是什么? SSAS是用于SQLServer数据库用于BI的组件,通过SSAS可以创建多维数据库,并在之上进行数据挖掘操作。本文我们主要介绍一些关于SSAS数据分析的知识。接下来就让我们来一起了解一下吧。 商业智能提供的解决方案能够从多种数据源获取数据并且能够把
一、是什么?
SSAS是用于SQLServer数据库用于BI的组件,通过SSAS可以创建多维数据库,并在之上进行数据挖掘操作。本文我们主要介绍一些关于SSAS数据分析的知识。接下来就让我们来一起了解一下吧。
商业智能提供的解决方案能够从多种数据源获取数据并且能够把各种数据转化成同一格式数据进行存储,最终达到让用户可以快速访问解读数据,为用户分析和制定决定提供有效的数据支持,那么SSAS就是通过建立多维的数据集来为数据的分析提供更快捷更高校的数据挖掘。
二、结构
SSAS又称挖掘结构,定义生成挖掘模型时依据的数据:它指定源数据视图、列数量和类型以及分为定型集和测试集的可选分区。单个挖掘结构可以支持多个共享同一个域的挖掘模型。下图说明了数据挖掘结构与数据源以及构成数据挖掘模型之间的关系。
处理数据:源到结构到模型
关系图中的挖掘结构基于包含多个表或视图的数据源,它们按 CustomerID字段进行联接。一个表包含有关客户的信息,例如地理区域、年龄、收入和性别,而相关嵌套表包含每个客户的多行其他相关信息,例如客户已购买的产品。此关系图显示根据一个挖掘结构可以生成多个模型,并且这些模型可以使用该结构中的不同列。
模型1 使用 CustomerID、收入、年龄和区域,并根据区域筛选数据。
模型2 使用 CustomerID、收入、年龄和区域,并根据年龄筛选数据。
模型3 使用 CustomerID、年龄、性别和嵌套表,不使用筛选器。
由于以上模型使用不同的输入列,并且其中两个模型还通过应用筛选器来限制在模型中使用的数据,因此即使这些模型基于相同数据,其结果也将大不相同。请注意,CustomerID 列在所有模型中都是必需的,因为它是可作为事例键使用的唯一可用列。
通过以上说明:数据挖掘结构的基本体系结构:如何定义挖掘结构、如何用数据填充它以及如何使用它创建模型。下一篇会通过一个简单的实例来实现。
三、优缺点
(一)数据挖掘使用精心研究的统计原则来发现您的数据中的模式,帮助您针对复杂问题作出明智的决策。通过将 Analysis Services中的数据挖掘算法应用于您的数据,您可以预测趋势、标识模式、创建规则和建议、分析复杂数据集中的事件顺序以及洞察新情况。
(二)SQL Server 2014中的数据挖掘不仅功能强大和易于访问,并且与许多人在进行分析和报告工作时喜欢使用的工具集成在一起。通过查看本节中提供的链接,您可以获取在开始学习数据挖掘时需要掌握的丰富背景信息。
四、总结
通过以上简单的介绍,让我们对SSAS有了一定的了解,至于它功能的实现及各个细节比如:数据源的建立,数据视图的建立,多维数据集,多维的建立等下一篇文章通过简单的实例来讲解。

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



ccsvchst.exe is a common process file that is part of the Symantec Endpoint Protection (SEP) software, and SEP is an endpoint protection solution developed by the well-known network security company Symantec. As part of the software, ccsvchst.exe is responsible for managing and monitoring SEP-related processes. First, let’s take a look at SymantecEndpointProtection(

Object-relational mapping (ORM) frameworks play a vital role in python development, they simplify data access and management by building a bridge between object and relational databases. In order to evaluate the performance of different ORM frameworks, this article will benchmark against the following popular frameworks: sqlAlchemyPeeweeDjangoORMPonyORMTortoiseORM Test Method The benchmarking uses a SQLite database containing 1 million records. The test performed the following operations on the database: Insert: Insert 10,000 new records into the table Read: Read all records in the table Update: Update a single field for all records in the table Delete: Delete all records in the table Each operation

Dual-core browser is a browser software that integrates two different browser cores. The kernel is the core part of the browser, responsible for rendering web content and executing web scripts and other functions. Traditional browsers generally use only a single kernel, such as IE browser using Trident kernel, Chrome browser using WebKit/Blink kernel, Firefox browser using Gecko kernel, etc. The dual-core browser integrates two different cores into one browser, and users can freely switch between them as needed. The emergence of dual-core browsers

The Yii framework is a high-performance, highly scalable, and highly maintainable PHP development framework that is highly efficient and reliable when developing Web applications. The main advantage of the Yii framework is its unique features and development methods, while also integrating many practical tools and functions. The core concept of the Yii framework, the MVC pattern, Yii adopts the MVC (Model-View-Controller) pattern, which is a pattern that divides the application into three independent parts, namely the business logic processing model and the user interface presentation model.

Object-relational mapping (ORM) is a programming technology that allows developers to use object programming languages to manipulate databases without writing SQL queries directly. ORM tools in python (such as SQLAlchemy, Peewee, and DjangoORM) simplify database interaction for big data projects. Advantages Code Simplicity: ORM eliminates the need to write lengthy SQL queries, which improves code simplicity and readability. Data abstraction: ORM provides an abstraction layer that isolates application code from database implementation details, improving flexibility. Performance optimization: ORMs often use caching and batch operations to optimize database queries, thereby improving performance. Portability: ORM allows developers to

Understanding Java Design Patterns: An introduction to 7 commonly used design patterns, specific code examples are required. Java design patterns are a universal solution to software design problems. It provides a set of widely accepted design ideas and codes of conduct. Design patterns help us better organize and plan the code structure, making the code more maintainable, readable and scalable. In this article, we will introduce 7 commonly used design patterns in Java and provide corresponding code examples. Singleton Patte

cpu is the central processing unit. Analysis 1 The central processing unit [CPU, Central Processing Unit] is a very large-scale integrated circuit, which is the computing core and control core of a computer. Its main function is to interpret computer instructions and process data information in computer software. Supplement: What does the CPU include? 1 The CPU includes computational thinking components, register components, control components, etc. The computational thinking component can perform specified address or floating-point arithmetic operations, shift operations and thinking operations, and can also perform address calculations and conversions. Summary/Notes CPU mainly explains computer instructions and processes data information in computer software.

What is ALICE coin? ALICE coin is a digital cryptocurrency inspired by the English word "ALICE", which symbolizes the unique creativity and imagination of the creator. As a virtual currency based on blockchain technology, ALICE currency aims to provide users with a safe, convenient and privacy-protected transaction environment. Application of Blockchain Technology In order to achieve the recording and verification of transactions, ALICE currency uses blockchain technology. Blockchain is a distributed database that links transaction information together in chronological order to form an immutable chain. This technology greatly improves the security of transaction information, while also eliminating the need for trust in third-party institutions and reducing transaction costs. Due to the decentralized nature of blockchain, transaction participants can
