reset
Syntax
Description
reset(
resets mbq
)mbq
back
to the start of the underlying datastore.
Examples
Reset minibatchqueue
and Obtain More Mini-Batches
You can call next
on a
minibatchqueue
object until all data is returned. When you reach the end of
the data, use reset
to reset the minibatchqueue
object and
continue obtaining mini-batches with next
.
Create a minibatchqueue
object from a datastore.
ds = digitDatastore; mbq = minibatchqueue(ds,MiniBatchSize=256)
mbq = minibatchqueue with 1 output and properties: Mini-batch creation: MiniBatchSize: 256 PartialMiniBatch: 'return' MiniBatchFcn: 'collate' PreprocessingEnvironment: 'serial' Outputs: OutputCast: {'single'} OutputAsDlarray: 1 MiniBatchFormat: {''} OutputEnvironment: {'auto'}
Iterate over all data in the minibatchqueue
object. Use
hasdata
to check if data is still available.
while hasdata(mbq) [~] = next(mbq); end
When hasdata
returns 0
(false
), you cannot collect a mini-batch using
next
.
hasdata(mbq)
ans = 0
X = next(mbq);
Error using minibatchqueue/next (line 353) Unable to provide a mini-batch because end of data reached. Use reset or shuffle to continue generating mini-batches from the data set.
Reset the minibatchqueue
object. Now, hasdata
returns
1
(true
), and you can continue to obtain data
using next
.
reset(mbq); hasdata(mbq)
ans = 1
X = next(mbq);
Input Arguments
mbq
— Mini-batch queue
minibatchqueue
object
Mini-batch queue, specified as a minibatchqueue
object.
Version History
Introduced in R2020b
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