Course Code: intror
Duration: 21 hours
Overview:

R是用于统计计算,数据分析和图形的开源免费编程语言。 R被企业和学术界内越来越多的管理人员和数据分析人员所使用。 R有各种各样的数据挖掘软件包。

Course Outline:

引言和序言

  • 使 R 更友好,R 和可用的 GUI
  • 雷工作室
  • 相关软体和文件
  • R 和统计资讯
  • 以交互方式使用 R
  • 介绍性会议
  • 获取有关功能和特性的说明
  • R 命令、区分大小写等。
  • 调用和更正以前的命令
  • 从档案执行命令或将输出转移到档中
  • 数据持久性和删除物件

简单的操作;数位和向量

  • 向量和赋值
  • 向量算术
  • 生成常规序列
  • 逻辑向量
  • 缺失值
  • 字元向量
  • 索引向量;选择和修改数据集的子集
  • 其他类型的物件

对象、它们的模式和属性

  • 内在属性:模式和长度
  • 更改物件的长度
  • 获取和设置属性
  • 物件的类

阵列和矩阵

  • 阵 列
  • 阵列索引。阵列的子节
  • 索引矩阵
  • array() 函数
  • 两个阵列的外积
  • 阵列的广义转置
  • Matrix 设施
    • Matrix 乘法
    • 线性方程和反演
    • 特征值和特征向量
    • 奇异值分解和行列式
    • 最小二乘拟合和 QR 分解
  • 形成分区矩阵 cbind() 和 rbind()
  • 包含阵列的串联函数 ()
  • 因数的频率表

清单和数据框

  • 清单
  • 构建和修改清单
    • 连接清单
  • 数据帧
    • 制作数据框
    • attach() 和 detach()
    • 使用数据框
    • 附加任意清单
    • 管理搜寻路径

数据操作

  • 选择、子集化观测值和变数
  • 筛选、分组
  • 重新编码、转换
  • 聚合,组合数据集
  • 字元操作、stringr 包

读取数据

  • Txt 档
  • CSV 档
  • XLS、XLSX 档
  • SPSS, SAS, Stata,...和其他格式数据
  • 将数据汇出为 txt、csv 和其他格式
  • Access使用 SQL 语言从资料库获取数据

概率分布

  • R 作为一组统计表
  • 检查一组数据的分布
  • 单样本和双样本检测

分组、循环和条件执行

  • 分组表达式
  • 控制语句
    • 条件执行:if 语句
    • 重复执行:for 回圈、repeat 和 while

编写自己的函数

  • 简单示例
  • 定义新的二元运算符
  • 命名参数和预设值
  • “...”论点
  • 函数内的赋值
  • 更高级的范例
    • 模组设计中的效率系数
    • 删除列印阵列中的所有名称
    • 递归数值积分
  • 范围
  • 自定义环境
  • 类、泛型函数和面向物件

图形过程

  • 高级绘图命令
    • plot() 函数
    • 显示多变数数据
    • 显示图形
    • 高级绘图函数的参数
  • 基本可视化图表
  • 使用 lattice 和 ggplot 包的多元关系
  • 使用图形参数
  • 图形参数清单

时间序列 Forecasting

  • 季节性调整
  • 移动平均线
  • 指数平滑
  • 外推法
  • 线性预测
  • 趋势估计
  • 平稳性和 ARIMA 建模

计量经济学方法(随意方法)

  • 回归分析
  • 多元线性回归
  • 多元非线性回归
  • 回归验证
  • Forecasting 来自回归
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