5.2 Explore Data
Oracle Machine Learning for R provides functions that enable you to perform exploratory data analysis.
With these functions, you can perform common statistical operations.
The functions and their uses are described in the following topics:
- About the Exploratory Data Analysis Functions
The OML4R functions for exploratory data analysis are in theOREeda
package. - About the NARROW Data Set for Examples
Many of the examples of the exploratory data analysis functions use theNARROW
data set. - Correlate Data
You can use theore.corr
function to perform correlation analysis. - Cross-Tabulate Data
Cross-tabulation is a statistical technique that finds an interdependent relationship between two tables of values. - Analyze the Frequency of Cross-Tabulations
Theore.freq
function analyses the output of theore.crosstab
function and automatically determines the techniques that are relevant to anore.crosstab
result. - Build Exponential Smoothing Models on Time Series Data
Theore.esm
function builds a simple or a double exponential smoothing model for in-database time series observations in an orderedore.vector
object. - Rank Data
Theore.rank
function analyzes distribution of values in numeric columns of anore.frame
. - Sort Data
Theore.sort
function enables flexible sorting of a data frame along one or more columns specified by theby
argument. - Summarize Data with ore.summary
Theore.summary
function calculates descriptive statistics and supports extensive analysis of columns in anore.frame
, along with flexible row aggregations. - Analyze the Distribution of Numeric Variables
Theore.univariate
function provides distribution analysis of numeric variables in anore.frame
. - Principal Component Analysis
The overloadedprcomp
andprincomp
functions perform principal component analysis in parallel in the database. - Singular Value Decomposition
The overloadedsvd
function performs singular value decomposition in parallel in the database.
Parent topic: Prepare and Explore Data in the Database