IInstance (ai-ml 1.0.0 API)

Type Parameters:

X - The type of the feature description of a single instance.

All Known Subinterfaces:

IDyadRankingInstance, ILabeledInstance, ILabelRankingInstance, IMultiLabelClassificationInstance, IRankingInstance<O>, IRegressionInstance, ISingleLabelClassificationInstance
```
public interface IInstance
```
Instances implementing this interface have a feature description of the type X. Usually, feature descriptions are realized via double arrays. However, here it is also allowed to specify feature descriptions which are heteregoneous (e.g., a time series with single values) and may consist of complex objects (e.g., lists, arrays, graphs).

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`java.lang.Object[]`	`getAttributes()`
`default java.lang.Object`	`getAttributeValue(int pos)`
`default int`	`getNumAttributes()`
`double[]`	`getPoint()`
`default double`	`getPointValue(int pos)`
`default boolean`	`isAttributeValuePresent(int pos)`
`void`	`removeColumn(int columnPos)`
`void`	`setAttributeValue(int pos, java.lang.Object value)`	Sets the value of the attribute at position `pos` to a new value as provided as an argument.

- Method Detail
  - getAttributeValue
```
default java.lang.Object getAttributeValue(int pos)
```
    Parameters:
    
    pos - The position of the feature that is to be returned.
    
    Returns:
    
    The feature value at position pos.
  - isAttributeValuePresent
```
default boolean isAttributeValuePresent(int pos)
```
  - getAttributes
```
java.lang.Object[] getAttributes()
```
  - getNumAttributes
```
default int getNumAttributes()
```
  - getPoint
```
double[] getPoint()
```
  - getPointValue
```
default double getPointValue(int pos)
```
  - removeColumn
```
void removeColumn(int columnPos)
```
  - setAttributeValue
```
void setAttributeValue(int pos,
                       java.lang.Object value)
```
    Sets the value of the attribute at position pos to a new value as provided as an argument.
    
    Parameters:
    
    pos - The position where to replace the current value with the new value.
    
    value - The new attribute value (to replace the previous value).