Loss

java.lang.Object
- me.yixqiao.jlearn.metrics.Metric
- - me.yixqiao.jlearn.losses.Loss

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

CrossEntropy, MeanSquaredError
```
public abstract class Loss
extends Metric
implements java.io.Serializable
```
Class for loss function.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

Loss()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.String`	`getFormatString()`	Get the string to format the metric.
`abstract double`	`getLoss(java.util.ArrayList<Matrix> out, java.util.ArrayList<Matrix> y)`	Get the loss.
`double`	`getLoss(Matrix out, Matrix y)`	Get the loss.
`double`	`getMetric(java.util.ArrayList<Matrix> output, java.util.ArrayList<Matrix> expected)`	Get the value of the metric.

Methods inherited from class me.yixqiao.jlearn.metrics.Metric
getMetric

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Loss
```
public Loss()
```
- Method Detail
  - getMetric
```
public double getMetric(java.util.ArrayList<Matrix> output,
                        java.util.ArrayList<Matrix> expected)
```
    Description copied from class: Metric
    
    Get the value of the metric.
    
    Specified by:
    
    getMetric in class Metric
    
    Parameters:
    
    output - output of network
    
    expected - expected output
    
    Returns:
    
    the metric value
  - getFormatString
```
public java.lang.String getFormatString()
```
    Description copied from class: Metric
    
    Get the string to format the metric.
    Return a string that can be used with printf in conjunction with the metric.
    Example: "M: %.2f"
    
    Specified by:
    
    getFormatString in class Metric
    
    Returns:
    
    the string
  - getLoss
```
public abstract double getLoss(java.util.ArrayList<Matrix> out,
                               java.util.ArrayList<Matrix> y)
```
    Get the loss.
    
    Parameters:
    
    out - output of network
    
    y - correct output
    
    Returns:
    
    the loss
  - getLoss
```
public double getLoss(Matrix out,
                      Matrix y)
```
    Get the loss.
    
    Parameters:
    
    out - output of network
    
    y - correct output
    
    Returns:
    
    the loss