From e7b071f33a2af3168586ef2710835b694f61e958 Mon Sep 17 00:00:00 2001 From: Luo Tao Date: Wed, 5 Jul 2017 15:55:26 +0800 Subject: [PATCH] update annotation with comments --- paddle/gserver/layers/AverageLayer.h | 4 ++++ paddle/gserver/layers/MaxLayer.h | 7 +++---- paddle/gserver/layers/SequenceLastInstanceLayer.cpp | 7 +++---- paddle/gserver/layers/SequencePoolLayer.h | 5 +++-- python/paddle/trainer_config_helpers/layers.py | 11 +++++++---- 5 files changed, 20 insertions(+), 14 deletions(-) diff --git a/paddle/gserver/layers/AverageLayer.h b/paddle/gserver/layers/AverageLayer.h index 332552a304..db4a17bfb0 100644 --- a/paddle/gserver/layers/AverageLayer.h +++ b/paddle/gserver/layers/AverageLayer.h @@ -25,6 +25,10 @@ namespace paddle { * If SequenceLevel = kNonSeq: * Output: output size is the number of input sequences (NOT input instances) * output[i] = average_{for each instance in this sequence}{input[i]} + * If stride_ > 0: + * Output: a shorten sequence. Stride is the step size by which we slide a + * window upon the input sequence, and the average pooling + * operation is then applied to each interval independently. * If SequenceLevel = kSeq: * Check input sequence must has sub-sequence * Output: output size is the number of input sub-sequences diff --git a/paddle/gserver/layers/MaxLayer.h b/paddle/gserver/layers/MaxLayer.h index adf7ab4ae4..fa536fce2b 100644 --- a/paddle/gserver/layers/MaxLayer.h +++ b/paddle/gserver/layers/MaxLayer.h @@ -27,10 +27,9 @@ namespace paddle { * Output: output size is the number of input sequences (NOT input instances) * output[i] = max_{for each instance in this sequence}{input[i]} * If stride_ > 0: - * Output: a shorten sequence. The operation of getting max instance of a - * sequence is independently performed on every slice of the input - * sequence, which is obtained by sliding a window with the window - * size set to stride_. + * Output: a shorten sequence. Stride is the step size by which we slide a + * window upon the input sequence, and the max pooling operation is + * then applied to each interval independently. * If SequenceLevel = kSeq: * Check input sequence must has sub-sequence * Output: output size is the number of input sub-sequences diff --git a/paddle/gserver/layers/SequenceLastInstanceLayer.cpp b/paddle/gserver/layers/SequenceLastInstanceLayer.cpp index 8127cbf09c..323cc47df1 100644 --- a/paddle/gserver/layers/SequenceLastInstanceLayer.cpp +++ b/paddle/gserver/layers/SequenceLastInstanceLayer.cpp @@ -26,10 +26,9 @@ namespace paddle { * If SequenceLevel = kNonseq: * Output: a sequence containing only the last instance of the input sequence * If stride_ > 0: - * Output: a shorten sequence. The operation of getting last instance of a - * sequence is independently performed on every slice of the input - * sequence, which is obtained by sliding a window with the window - * size set to stride_. + * Output: a shorten sequence. Stride is the step size by which we slide a + * window upon the input sequence, and getting last instance + * operation is then applied to each interval independently. * If SequenceLevel = kSeq: * Check input sequence must has sub-sequence * Output: a sequence containing only the last instance of each sub-sequence diff --git a/paddle/gserver/layers/SequencePoolLayer.h b/paddle/gserver/layers/SequencePoolLayer.h index 058627def8..e207afd1dc 100644 --- a/paddle/gserver/layers/SequencePoolLayer.h +++ b/paddle/gserver/layers/SequencePoolLayer.h @@ -28,8 +28,9 @@ namespace paddle { * sequence}{input[i]} * If stride_ > 0: * Check input sequence must not have sub-sequence - * Output: a shorten sequence, pooling is performed upon a small local - * area + * Output: a shorten sequence. Stride is the step size by which we slide + * a window upon the input sequence, and the pooling operation + * is then applied to each interval independently. * If SequenceLevel = kSeq: * Check input sequence must has sub-sequence * Output: output size is the number of input sub-sequences diff --git a/python/paddle/trainer_config_helpers/layers.py b/python/paddle/trainer_config_helpers/layers.py index 5e8bf4b203..2f52a27e60 100755 --- a/python/paddle/trainer_config_helpers/layers.py +++ b/python/paddle/trainer_config_helpers/layers.py @@ -1097,7 +1097,10 @@ def pooling_layer(input, If stride > 0, this layer slides a window whose size is determined by stride, and return the pooling value of the window as the output. Thus, a long sequence - will be shorten. Note that for sequence with sub-sequence, the default value + will be shorten. + + The parameter stride specifies the intervals at which to apply the pooling + operation. Note that for sequence with sub-sequence, the default value of stride is -1. The example usage is: @@ -1118,7 +1121,7 @@ def pooling_layer(input, :param pooling_type: Type of pooling, MaxPooling(default), AvgPooling, SumPooling, SquareRootNPooling. :type pooling_type: BasePoolingType|None - :param stride: window size. + :param stride: The step size between successive pooling regions. :type stride: Int :param bias_attr: Bias parameter attribute. False if no bias. :type bias_attr: ParameterAttribute|None|False @@ -1408,7 +1411,7 @@ def last_seq(input, :type name: basestring :param input: Input layer name. :type input: LayerOutput - :param stride: window size. + :param stride: The step size between successive pooling regions. :type stride: Int :param layer_attr: extra layer attributes. :type layer_attr: ExtraLayerAttribute. @@ -1464,7 +1467,7 @@ def first_seq(input, :type name: basestring :param input: Input layer name. :type input: LayerOutput - :param stride: window size. + :param stride: The step size between successive pooling regions. :type stride: Int :param layer_attr: extra layer attributes. :type layer_attr: ExtraLayerAttribute. -- GitLab