Package org.deeplearning4j.optimize.listeners

Class CheckpointListener.Builder

java.lang.Object

org.deeplearning4j.optimize.listeners.CheckpointListener.Builder

Enclosing class:

CheckpointListener

public static class CheckpointListener.Builder
extends Object

Constructor Summary

Constructors

Constructor	Description
Builder(@NonNull File rootDir)
Builder(@NonNull String rootDir)

Method Summary

Modifier and Type	Method	Description
CheckpointListener	build()
CheckpointListener.Builder	deleteExisting(boolean deleteExisting)	If the checkpoint listener is set to save to a non-empty directory, should the CheckpointListener-related content be deleted? This is disabled by default (and instead, an exception will be thrown if existing data is found) WARNING: Be careful when enabling this, as it deletes all saved checkpoint models in the specified directory!
CheckpointListener.Builder	keepAll()	Keep all model checkpoints - i.e., don't delete any.
CheckpointListener.Builder	keepLast(int n)	Keep only the last N most recent model checkpoint files.
CheckpointListener.Builder	keepLastAndEvery(int nLast, int everyN)	Keep the last N most recent model checkpoint files, and every M checkpoint files. For example: suppose you save every 100 iterations, for 2050 iteration, and use keepLastAndEvery(3,5).
CheckpointListener.Builder	logSaving(boolean logSaving)	If true (the default) log a message every time a model is saved
CheckpointListener.Builder	saveEvery(long amount, TimeUnit timeUnit)	Save a model periodically
CheckpointListener.Builder	saveEvery(long amount, TimeUnit timeUnit, boolean sinceLast)	Save a model periodically (if sinceLast == false), or if the specified amount of time has elapsed since the last model was saved (if sinceLast == true)
CheckpointListener.Builder	saveEveryEpoch()	Save a model at the end of every epoch
CheckpointListener.Builder	saveEveryNEpochs(int n)	Save a model at the end of every N epochs
CheckpointListener.Builder	saveEveryNIterations(int n)	Save a model every N iterations
CheckpointListener.Builder	saveEveryNIterations(int n, boolean sinceLast)	Save a model every N iterations (if sinceLast == false), or if N iterations have passed since the last model vas saved (if sinceLast == true)

Methods inherited from class java.lang.Object

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

Constructor Detail

Builder

public Builder(@NonNull
               @NonNull String rootDir)

Parameters:

rootDir - Root directory to save models to

Builder

public Builder(@NonNull
               @NonNull File rootDir)

Parameters:

rootDir - Root directory to save models to

Method Detail

saveEveryEpoch

public CheckpointListener.Builder saveEveryEpoch()

Save a model at the end of every epoch

saveEveryNEpochs

public CheckpointListener.Builder saveEveryNEpochs(int n)

Save a model at the end of every N epochs

saveEveryNIterations

public CheckpointListener.Builder saveEveryNIterations(int n)

Save a model every N iterations

saveEveryNIterations

public CheckpointListener.Builder saveEveryNIterations(int n,
                                                       boolean sinceLast)

Save a model every N iterations (if sinceLast == false), or if N iterations have passed since the last model vas saved (if sinceLast == true)

saveEvery

public CheckpointListener.Builder saveEvery(long amount,
                                            TimeUnit timeUnit)

Save a model periodically

Parameters:

amount - Quantity of the specified time unit

timeUnit - Time unit

saveEvery

public CheckpointListener.Builder saveEvery(long amount,
                                            TimeUnit timeUnit,
                                            boolean sinceLast)

Save a model periodically (if sinceLast == false), or if the specified amount of time has elapsed since the last model was saved (if sinceLast == true)

Parameters:

amount - Quantity of the specified time unit

timeUnit - Time unit

keepAll

public CheckpointListener.Builder keepAll()

Keep all model checkpoints - i.e., don't delete any. Note that this is the default.

keepLast

public CheckpointListener.Builder keepLast(int n)

Keep only the last N most recent model checkpoint files. Older checkpoints will automatically be deleted.

Parameters:

n - Number of most recent checkpoints to keep

keepLastAndEvery

public CheckpointListener.Builder keepLastAndEvery(int nLast,
                                                   int everyN)

Keep the last N most recent model checkpoint files, and every M checkpoint files.
For example: suppose you save every 100 iterations, for 2050 iteration, and use keepLastAndEvery(3,5). This means after 2050 iterations you would have saved 20 checkpoints - some of which will be deleted. Those remaining in this example: iterations 500, 1000, 1500, 1800, 1900, 2000.

Parameters:

nLast - Most recent checkpoints to keep

everyN - Every N checkpoints to keep (regardless of age)

logSaving

public CheckpointListener.Builder logSaving(boolean logSaving)

If true (the default) log a message every time a model is saved

Parameters:

logSaving - Whether checkpoint saves should be logged or not

deleteExisting

public CheckpointListener.Builder deleteExisting(boolean deleteExisting)

If the checkpoint listener is set to save to a non-empty directory, should the CheckpointListener-related content be deleted?
This is disabled by default (and instead, an exception will be thrown if existing data is found)
WARNING: Be careful when enabling this, as it deletes all saved checkpoint models in the specified directory!

build

public CheckpointListener build()