Iterator

Chainer provides some iterators that implement typical strategies to create mini-batches by iterating over datasets. SerialIterator is the simplest one, which extract mini-batches in the main thread. MultiprocessIterator and MultithreadIterator are a parallelized version of SerialIterator. It maintains worker subprocesses and subthreads to load the next mini-batch in parallel.

chainer.iterators.SerialIterator	Dataset iterator that serially reads the examples.
chainer.iterators.MultiprocessIterator	Dataset iterator that loads examples in parallel.
chainer.iterators.MultithreadIterator	Dataset iterator that loads examples in parallel.