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Add cross entropy layer for pixel classification #2876

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wants to merge 7 commits into from
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Add cross entropy layer for pixel classification #2876

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wanghaoshuang
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  1. Add pixel_cross_entropy_cost layer
  2. Add INPUT_MULTI_LABEL type for generating pixel label data in LayerGradUtil.cpp
    fix Add cross entropy layer for pixel classification #2875

@wanghaoshuang
Add pixel softmax layer for FCN model
29f25fb 
1. Add switch function for switching image dimensions order
2. Add CpuMatrix::backwardSoftmax function
3. Add pixel softmax layer, python wrapper and grad_test
@wanghaoshuang
Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into…
3aa6798 
… pixel_softmax_layer
@wanghaoshuang
fix pixel softmax python wrapper bug
0152d97
@wanghaoshuang
Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into…
475dd70 
… pixel_softmax_layer
@wanghaoshuang
Merge branch 'pixel_softmax_layer' into pixel_cross_entropy
2e016b4
@wanghaoshuang
Add cross entropy layer for pixel classification
d243061 
1. Add pixel_cross_entropy_cost layer
2. Add INPUT_MULTI_LABEL type for generating pixel label data in LayerGradUtil.cpp
@qingqing01
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@wanghaoshuang as we discussed earlier, I still think there is no need to develop pixel_cross_entropy_cost. And this layer is not a general operation and a litter strange. We can expose the switch_layer for users and use the switch_layer, resize_layer, softmax and cross_entropy_cost for the pixel classification:

switch_layer -> resize_layer -> softmax -> cross_entropy_cost

@wanghaoshuang wanghaoshuang deleted the pixel_cross_entropy branch July 19, 2017 06:56
@wanghaoshuang
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@qingqing01 I implement switch_layer with reshape option in PR#2788 which support for softmax activation.
So i closed this PR.

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@qingqing01 qingqing01 Awaiting requested review from qingqing01

@guoshengCS guoshengCS Awaiting requested review from guoshengCS

@pkuyym pkuyym Awaiting requested review from pkuyym

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Add cross entropy layer for pixel classification
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@wanghaoshuang @qingqing01