Package smile.data.formula

Class Date

java.lang.Object

smile.data.formula.Date

All Implemented Interfaces:

Serializable, Term

public class Date
extends Object
implements Term

Date/time feature extractor.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Date(String name, DateFeature... features)	Constructor.

Method Summary

Modifier and Type	Method	Description
List<Feature>	bind(StructType schema)	Binds the term to a schema.
String	toString()
Set<String>	variables()	Returns the set of variables used in this term.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface smile.data.formula.Term

expand

Constructor Details

Date

public Date(String name,
 DateFeature... features)

Constructor.

Parameters:

name - the name of variable/column.

features - the date/time features to extract.

Method Details

toString

public String toString()

Overrides:

toString in class Object

variables

public Set<String> variables()

Description copied from interface: Term

Returns the set of variables used in this term.

Specified by:

variables in interface Term

Returns:

the set of variables used in this term.

bind

public List<Feature> bind(StructType schema)

Description copied from interface: Term

Binds the term to a schema.

Specified by:

bind in interface Term

Parameters:

schema - the schema to bind the term with.

Returns:

the feature list.