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@ -1,11 +1,103 @@
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# Release v0.10.0
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We are glad to release version 0.10.0. In this version, we are happy to release the new
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[Python API](http://research.baidu.com/paddlepaddles-new-api-simplifies-deep-learning-programs/).
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- Our old Python API is kind of out of date. It's hard to learn and hard to
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use. To write a PaddlePaddle program using the old API, we'd have to write
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at least two Python files: one `data provider` and another one that defines
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the network topology. Users start a PaddlePaddle job by running the
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`paddle_trainer` C++ program, which calls Python interpreter to run the
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network topology configuration script and then start the training loop,
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which iteratively calls the data provider function to load minibatches.
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This prevents us from writing a Python program in a modern way, e.g., in the
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Jupyter Notebook.
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- The new API, which we often refer to as the *v2 API*, allows us to write
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much shorter Python programs to define the network and the data in a single
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.py file. Also, this program can run in Jupyter Notebook, since the entry
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point is in Python program and PaddlePaddle runs as a shared library loaded
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and invoked by this Python program.
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Basing on the new API, we delivered an online interative
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book, [Deep Learning 101](http://book.paddlepaddle.org/index.en.html)
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and [its Chinese version](http://book.paddlepaddle.org/).
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We also worked on updating our online documentation to describe the new API.
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But this is an ongoing work. We will release more documentation improvements
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in the next version.
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We also worked on bring the new API to distributed model training (via MPI and
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Kubernetes). This work is ongoing. We will release more about it in the next
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version.
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## New Features
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* We release [new Python API](http://research.baidu.com/paddlepaddles-new-api-simplifies-deep-learning-programs/).
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* Deep Learning 101 book in [English](http://book.paddlepaddle.org/index.en.html) and [Chinese](http://book.paddlepaddle.org/).
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* Support rectangle input for CNN.
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* Support stride pooling for seqlastin and seqfirstin.
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* Expose `seq_concat_layer/seq_reshape_layer` in `trainer_config_helpers`.
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* Add dataset package: CIFAR, MNIST, IMDB, WMT14, CONLL05, movielens, imikolov.
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* Add Priorbox layer for Single Shot Multibox Detection.
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* Add smooth L1 cost.
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* Add data reader creator and data reader decorator for v2 API.
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* Add the CPU implementation of cmrnorm projection.
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## Improvements
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* Support Python virtualenv for `paddle_trainer`.
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* Add pre-commit hooks, used for automatically format our code.
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* Upgrade protobuf to version 3.x.
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* Add an option to check data type in Python data provider.
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* Speedup the backward of average layer on GPU.
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* Documentation refinement.
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* Check dead links in documents using Travis-CI.
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* Add a example for explaining `sparse_vector`.
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* Add ReLU in layer_math.py
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* Simplify data processing flow for Quick Start.
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* Support CUDNN Deconv.
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* Add data feeder in v2 API.
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* Support predicting the samples from sys.stdin for sentiment demo.
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* Provide multi-proccess interface for image preprocessing.
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* Add benchmark document for v1 API.
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* Add ReLU in `layer_math.py`.
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* Add packages for automatically downloading public datasets.
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* Rename `Argument::sumCost` to `Argument::sum` since class `Argument` is nothing with cost.
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* Expose Argument::sum to Python
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* Add a new `TensorExpression` implementation for matrix-related expression evaluations.
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* Add lazy assignment for optimizing the calculation of a batch of multiple expressions.
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* Add abstract calss `Function` and its implementation:
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* `PadFunc` and `PadGradFunc`.
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* `ContextProjectionForwardFunc` and `ContextProjectionBackwardFunc`.
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* `CosSimBackward` and `CosSimBackwardFunc`.
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* `CrossMapNormalFunc` and `CrossMapNormalGradFunc`.
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* `MulFunc`.
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* Add class `AutoCompare` and `FunctionCompare`, which make it easier to write unit tests for comparing gpu and cpu version of a function.
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* Generate `libpaddle_test_main.a` and remove the main function inside the test file.
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* Support dense numpy vector in PyDataProvider2.
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* Clean code base, remove some copy-n-pasted code snippets:
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* Extract `RowBuffer` class for `SparseRowMatrix`.
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* Clean the interface of `GradientMachine`.
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* Use `override` keyword in layer.
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* Simplify `Evaluator::create`, use `ClassRegister` to create `Evaluator`s.
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* Check MD5 checksum when downloading demo's dataset.
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* Add `paddle::Error` which intentially replace `LOG(FATAL)` in Paddle.
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## Bug Fixes
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* Check layer input types for `recurrent_group`.
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* Don't run `clang-format` with .cu source files.
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* Fix bugs with `LogActivation`.
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* Fix the bug that runs `test_layerHelpers` multiple times.
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* Fix the bug that the seq2seq demo exceeds protobuf message size limit.
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* Fix the bug in dataprovider converter in GPU mode.
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* Fix a bug in `GatedRecurrentLayer`.
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* Fix bug for `BatchNorm` when testing more than one models.
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* Fix broken unit test of paramRelu.
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* Fix some compile-time warnings about `CpuSparseMatrix`.
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* Fix `MultiGradientMachine` error when `trainer_count > batch_size`.
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* Fix bugs that prevents from asynchronous data loading in `PyDataProvider2`.
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# Release v0.9.0
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Liu Yiqun
8 years ago