# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserve. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import os import numpy as np import logging import paddle from ...common import get_logger from .utils.utils import compute_start_end, get_same_padding, convert_to_list from .layers_base import * from paddle.framework import in_dygraph_mode __all__ = [ 'SuperConv2D', 'SuperConv2DTranspose', 'SuperSeparableConv2D', 'SuperBatchNorm2D', 'SuperLinear', 'SuperInstanceNorm2D', 'SuperGroupConv2D', 'SuperDepthwiseConv2D', 'SuperGroupConv2DTranspose', 'SuperDepthwiseConv2DTranspose', 'SuperLayerNorm', 'SuperEmbedding', 'SuperSyncBatchNorm' ] _logger = get_logger(__name__, level=logging.INFO) ### TODO: if task is elastic width, need to add re_organize_middle_weight in 1x1 conv in MBBlock class SuperConv2D(paddle.nn.Conv2D): """This interface is used to construct a callable object of the ``SuperConv2D`` class. Note: the channel in config need to less than first defined. The super convolution2D layer calculates the output based on the input, filter and strides, paddings, dilations, groups parameters. Input and Output are in NCHW format, where N is batch size, C is the number of the feature map, H is the height of the feature map, and W is the width of the feature map. Filter's shape is [MCHW] , where M is the number of output feature map, C is the number of input feature map, H is the height of the filter, and W is the width of the filter. If the groups is greater than 1, C will equal the number of input feature map divided by the groups. Please refer to UFLDL's `convolution `_ for more details. If bias attribution and activation type are provided, bias is added to the output of the convolution, and the corresponding activation function is applied to the final result. For each input :math:`X`, the equation is: .. math:: Out = sigma (W \\ast X + b) Where: * :math:`X`: Input value, a ``Tensor`` with NCHW format. * :math:`W`: Filter value, a ``Tensor`` with shape [MCHW] . * :math:`\\ast`: Convolution operation. * :math:`b`: Bias value, a 2-D ``Tensor`` with shape [M, 1]. * :math:`\\sigma`: Activation function. * :math:`Out`: Output value, the shape of :math:`Out` and :math:`X` may be different. Example: - Input: Input shape: :math:`(N, C_{in}, H_{in}, W_{in})` Filter shape: :math:`(C_{out}, C_{in}, H_f, W_f)` - Output: Output shape: :math:`(N, C_{out}, H_{out}, W_{out})` Where .. math:: H_{out}&= \\frac{(H_{in} + 2 * paddings[0] - (dilations[0] * (H_f - 1) + 1))}{strides[0]} + 1 W_{out}&= \\frac{(W_{in} + 2 * paddings[1] - (dilations[1] * (W_f - 1) + 1))}{strides[1]} + 1 Parameters: num_channels(int): The number of channels in the input image. num_filters(int): The number of filter. It is as same as the output feature map. filter_size (int or tuple): The filter size. If filter_size is a tuple, it must contain two integers, (filter_size_H, filter_size_W). Otherwise, the filter will be a square. candidate_config(dict, optional): Dictionary descripts candidate config of this layer, such as {'kernel_size': (3, 5, 7), 'channel': (4, 6, 8)}, means the kernel size of this layer can be choose from (3, 5, 7), the key of candidate_config only can be 'kernel_size', 'channel' and 'expand_ratio', 'channel' and 'expand_ratio' CANNOT be set at the same time. Default: None. transform_kernel(bool, optional): Whether to use transform matrix to transform a large filter to a small filter. Default: False. stride (int or tuple, optional): The stride size. If stride is a tuple, it must contain two integers, (stride_H, stride_W). Otherwise, the stride_H = stride_W = stride. Default: 1. padding (int or tuple, optional): The padding size. If padding is a tuple, it must contain two integers, (padding_H, padding_W). Otherwise, the padding_H = padding_W = padding. Default: 0. dilation (int or tuple, optional): The dilation size. If dilation is a tuple, it must contain two integers, (dilation_H, dilation_W). Otherwise, the dilation_H = dilation_W = dilation. Default: 1. groups (int, optional): The groups number of the Conv2d Layer. According to grouped convolution in Alex Krizhevsky's Deep CNN paper: when group=2, the first half of the filters is only connected to the first half of the input channels, while the second half of the filters is only connected to the second half of the input channels. Default: 1. param_attr (ParamAttr, optional): The parameter attribute for learnable weights(Parameter) of conv2d. If it is set to None or one attribute of paddle.ParamAttr, conv2d will create paddle.ParamAttr as param_attr. If the Initializer of the param_attr is not set, the parameter is initialized with :math:`Normal(0.0, std)`, and the :math:`std` is :math:`(\\frac{2.0 }{filter\\_elem\\_num})^{0.5}`. Default: None. bias_attr (ParamAttr or bool, optional): The attribute for the bias of conv2d. If it is set to False, no bias will be added to the output units. If it is set to None or one attribute of paddle.ParamAttr, conv2d will create paddle.ParamAttr as bias_attr. If the Initializer of the bias_attr is not set, the bias is initialized zero. Default: None. use_cudnn (bool, optional): Use cudnn kernel or not, it is valid only when the cudnn library is installed. Default: True. act (str, optional): Activation type, if it is set to None, activation is not appended. Default: None. dtype (str, optional): Data type, it can be "float32" or "float64". Default: "float32". Attribute: **weight** (Parameter): the learnable weights of filter of this layer. **bias** (Parameter or None): the learnable bias of this layer. Returns: None Raises: ValueError: if ``use_cudnn`` is not a bool value. Examples: .. code-block:: python import paddle from paddleslim.nas.ofa.layers import SuperConv2D import numpy as np data = np.random.uniform(-1, 1, [10, 3, 32, 32]).astype('float32') super_conv2d = SuperConv2D(3, 10, 3) config = {'channel': 5} data = paddle.to_tensor(data) conv = super_conv2d(data, config) """ ### NOTE: filter_size, num_channels and num_filters must be the max of candidate to define a largest network. def __init__(self, in_channels, out_channels, kernel_size, candidate_config={}, transform_kernel=False, stride=1, padding=0, dilation=1, groups=1, padding_mode='zeros', weight_attr=None, bias_attr=None, data_format='NCHW'): super(SuperConv2D, self).__init__( in_channels, out_channels, kernel_size, stride=stride, padding=padding, padding_mode=padding_mode, dilation=dilation, groups=groups, weight_attr=weight_attr, bias_attr=bias_attr, data_format=data_format) self.candidate_config = candidate_config self.cur_config = None if len(candidate_config.items()) != 0: for k, v in candidate_config.items(): candidate_config[k] = list(set(v)) self.ks_set = candidate_config[ 'kernel_size'] if 'kernel_size' in candidate_config else None self.expand_ratio = candidate_config[ 'expand_ratio'] if 'expand_ratio' in candidate_config else None self.channel = candidate_config[ 'channel'] if 'channel' in candidate_config else None self.base_channel = self._out_channels if self.expand_ratio != None: self.base_channel = int(self._out_channels / max(self.expand_ratio)) self.transform_kernel = transform_kernel if self.ks_set != None: self.ks_set.sort() if self.transform_kernel != False: scale_param = dict() ### create parameter to transform kernel for i in range(len(self.ks_set) - 1): ks_small = self.ks_set[i] ks_large = self.ks_set[i + 1] param_name = '%dto%d_matrix' % (ks_large, ks_small) ks_t = ks_small**2 scale_param[param_name] = self.create_parameter( attr=paddle.ParamAttr( name=self._full_name + param_name, initializer=paddle.nn.initializer.Assign(np.eye(ks_t))), shape=(ks_t, ks_t), dtype=self._dtype) for name, param in scale_param.items(): setattr(self, name, param) def get_active_filter(self, in_nc, out_nc, kernel_size): start, end = compute_start_end(self._kernel_size[0], kernel_size) ### if NOT transform kernel, intercept a center filter with kernel_size from largest filter if self.weight.shape[0] <= out_nc and self.weight.shape[1] <= in_nc: filters = self.weight else: filters = self.weight[:out_nc, :in_nc, start:end, start:end] if self.transform_kernel != False and kernel_size < self._kernel_size[ 0]: ### if transform kernel, then use matrix to transform start_filter = self.weight[:out_nc, :in_nc, :, :] for i in range(len(self.ks_set) - 1, 0, -1): src_ks = self.ks_set[i] if src_ks <= kernel_size: break target_ks = self.ks_set[i - 1] start, end = compute_start_end(src_ks, target_ks) _input_filter = start_filter[:, :, start:end, start:end] _input_filter = paddle.reshape( _input_filter, shape=[(_input_filter.shape[0] * _input_filter.shape[1]), -1]) _input_filter = paddle.matmul( _input_filter, self.__getattr__('%dto%d_matrix' % (src_ks, target_ks)), False, False) _input_filter = paddle.reshape( _input_filter, shape=[ filters.shape[0], filters.shape[1], target_ks, target_ks ]) start_filter = _input_filter filters = start_filter return filters def get_groups_in_out_nc(self, in_nc, out_nc): if self._groups == 1: ### standard conv return self._groups, in_nc, out_nc elif self._groups == self._in_channels: ### depthwise convolution if in_nc != out_nc: _logger.debug( "input channel and output channel in depthwise conv is different, change output channel to input channel! origin channel:(in_nc {}, out_nc {}): ". format(in_nc, out_nc)) groups = in_nc out_nc = in_nc return groups, in_nc, out_nc else: ### groups convolution ### conv: weight: (Cout, Cin/G, Kh, Kw) groups = self._groups in_nc = int(in_nc // groups) return groups, in_nc, out_nc def forward(self, input, kernel_size=None, expand_ratio=None, channel=None): """ Parameters: input(Tensor): Input tensor. kernel_size(int, optional): the kernel size of the filter in actual calculation. Default: None. expand_ratio(int|float, optional): the expansion ratio of filter's channel number in actual calculation. Default: None. channel(int, optional): the expansion ratio of filter's channel number in actual calculation. Default: None. """ self.cur_config = { 'kernel_size': kernel_size, 'expand_ratio': expand_ratio, 'channel': channel } in_nc = int(input.shape[1]) assert ( expand_ratio == None or channel == None ), "expand_ratio and channel CANNOT be NOT None at the same time." if expand_ratio != None: out_nc = int(expand_ratio * self.base_channel) elif channel != None: out_nc = int(channel) else: out_nc = self._out_channels ks = int(self._kernel_size[0]) if kernel_size == None else int( kernel_size) groups, weight_in_nc, weight_out_nc = self.get_groups_in_out_nc(in_nc, out_nc) weight = self.get_active_filter(weight_in_nc, weight_out_nc, ks) if kernel_size != None or 'kernel_size' in self.candidate_config.keys(): padding = convert_to_list(get_same_padding(ks), 2) else: padding = self._padding if self.bias is not None: ### if conv is depthwise conv, expand_ratio=0, but conv' expand ### ratio before depthwise conv is not equal to 1.0, the shape of the weight ### about this depthwise conv is changed, but out_nc is not change, ### so need to change bias shape according to the weight_out_nc. ### if in_nc > groups > 1, the actual output of conv is weight_out_nc * groups, ### so slice the shape of bias by weight_out_nc and groups. ### if in_nc = groups, slice the shape of bias by weight_out_nc. if groups != in_nc: weight_out_nc = weight_out_nc * groups if weight_out_nc >= self.bias.shape[0]: bias = self.bias else: bias = self.bias[:weight_out_nc] else: bias = self.bias self.cur_config['prune_dim'] = list(weight.shape) self.cur_config['prune_group'] = groups out = paddle.nn.functional.conv2d( input, weight, bias=bias, stride=self._stride, padding=padding, dilation=self._dilation, groups=groups, data_format=self._data_format) return out class SuperGroupConv2D(SuperConv2D): def get_groups_in_out_nc(self, in_nc, out_nc): ### groups convolution ### conv: weight: (Cout, Cin/G, Kh, Kw) groups = self._groups in_nc = int(in_nc // groups) return groups, in_nc, out_nc class SuperDepthwiseConv2D(SuperConv2D): ### depthwise convolution def get_groups_in_out_nc(self, in_nc, out_nc): if in_nc != out_nc: _logger.debug( "input channel and output channel in depthwise conv is different, change output channel to input channel! origin channel:(in_nc {}, out_nc {}): ". format(in_nc, out_nc)) groups = in_nc out_nc = in_nc return groups, in_nc, out_nc class SuperConv2DTranspose(paddle.nn.Conv2DTranspose): """ This interface is used to construct a callable object of the ``SuperConv2DTranspose`` class. Note: the channel in config need to less than first defined. The super convolution2D transpose layer calculates the output based on the input, filter, and dilations, strides, paddings. Input and output are in NCHW format. Where N is batch size, C is the number of feature map, H is the height of the feature map, and W is the width of the feature map. Filter's shape is [MCHW] , where M is the number of input feature map, C is the number of output feature map, H is the height of the filter, and W is the width of the filter. If the groups is greater than 1, C will equal the number of input feature map divided by the groups. If bias attribution and activation type are provided, bias is added to the output of the convolution, and the corresponding activation function is applied to the final result. The details of convolution transpose layer, please refer to the following explanation and references `conv2dtranspose `_ . For each input :math:`X`, the equation is: .. math:: Out = \\sigma (W \\ast X + b) Where: * :math:`X`: Input value, a ``Tensor`` with NCHW format. * :math:`W`: Filter value, a ``Tensor`` with shape [MCHW] . * :math:`\\ast`: Convolution operation. * :math:`b`: Bias value, a 2-D ``Tensor`` with shape [M, 1]. * :math:`\\sigma`: Activation function. * :math:`Out`: Output value, the shape of :math:`Out` and :math:`X` may be different. Example: - Input: Input shape: :math:`(N, C_{in}, H_{in}, W_{in})` Filter shape: :math:`(C_{in}, C_{out}, H_f, W_f)` - Output: Output shape: :math:`(N, C_{out}, H_{out}, W_{out})` Where .. math:: H^\\prime_{out} &= (H_{in} - 1) * strides[0] - 2 * paddings[0] + dilations[0] * (H_f - 1) + 1 \\\\ W^\\prime_{out} &= (W_{in} - 1) * strides[1] - 2 * paddings[1] + dilations[1] * (W_f - 1) + 1 \\\\ H_{out} &\\in [ H^\\prime_{out}, H^\\prime_{out} + strides[0] ) \\\\ W_{out} &\\in [ W^\\prime_{out}, W^\\prime_{out} + strides[1] ) Parameters: num_channels(int): The number of channels in the input image. num_filters(int): The number of the filter. It is as same as the output feature map. filter_size(int or tuple): The filter size. If filter_size is a tuple, it must contain two integers, (filter_size_H, filter_size_W). Otherwise, the filter will be a square. candidate_config(dict, optional): Dictionary descripts candidate config of this layer, such as {'kernel_size': (3, 5, 7), 'channel': (4, 6, 8)}, means the kernel size of this layer can be choose from (3, 5, 7), the key of candidate_config only can be 'kernel_size', 'channel' and 'expand_ratio', 'channel' and 'expand_ratio' CANNOT be set at the same time. Default: None. transform_kernel(bool, optional): Whether to use transform matrix to transform a large filter to a small filter. Default: False. output_size(int or tuple, optional): The output image size. If output size is a tuple, it must contain two integers, (image_H, image_W). None if use filter_size, padding, and stride to calculate output_size. if output_size and filter_size are specified at the same time, They should follow the formula above. Default: None. padding(int or tuple, optional): The padding size. If padding is a tuple, it must contain two integers, (padding_H, padding_W). Otherwise, the padding_H = padding_W = padding. Default: 0. stride(int or tuple, optional): The stride size. If stride is a tuple, it must contain two integers, (stride_H, stride_W). Otherwise, the stride_H = stride_W = stride. Default: 1. dilation(int or tuple, optional): The dilation size. If dilation is a tuple, it must contain two integers, (dilation_H, dilation_W). Otherwise, the dilation_H = dilation_W = dilation. Default: 1. groups(int, optional): The groups number of the Conv2d transpose layer. Inspired by grouped convolution in Alex Krizhevsky's Deep CNN paper, in which when group=2, the first half of the filters is only connected to the first half of the input channels, while the second half of the filters is only connected to the second half of the input channels. Default: 1. param_attr (ParamAttr, optional): The parameter attribute for learnable weights(Parameter) of conv2d_transpose. If it is set to None or one attribute of paddle.ParamAttr, conv2d_transpose will create paddle.ParamAttr as param_attr. If the Initializer of the param_attr is not set, the parameter is initialized with Xavier. Default: None. bias_attr (ParamAttr or bool, optional): The attribute for the bias of conv2d_transpose. If it is set to False, no bias will be added to the output units. If it is set to None or one attribute of paddle.ParamAttr, conv2d_transpose will create paddle.ParamAttr as bias_attr. If the Initializer of the bias_attr is not set, the bias is initialized zero. Default: None. use_cudnn(bool, optional): Use cudnn kernel or not, it is valid only when the cudnn library is installed. Default: True. act (str, optional): Activation type, if it is set to None, activation is not appended. Default: None. dtype (str, optional): Data type, it can be "float32" or "float64". Default: "float32". Attribute: **weight** (Parameter): the learnable weights of filters of this layer. **bias** (Parameter or None): the learnable bias of this layer. Returns: None Examples: .. code-block:: python import paddle import numpy as np from paddleslim.nas.ofa.layers import SuperConv2DTranspose data = np.random.random((3, 32, 32, 5)).astype('float32') config = {'channel': 5} super_convtranspose = SuperConv2DTranspose(32, 10, 3) ret = super_convtranspose(paddle.to_tensor(data), config) """ def __init__(self, in_channels, out_channels, kernel_size, candidate_config={}, transform_kernel=False, stride=1, padding=0, output_padding=0, dilation=1, groups=1, weight_attr=None, bias_attr=None, data_format="NCHW"): super(SuperConv2DTranspose, self).__init__( in_channels, out_channels, kernel_size, stride=stride, padding=padding, dilation=dilation, output_padding=output_padding, groups=groups, weight_attr=weight_attr, bias_attr=bias_attr, data_format=data_format) self.candidate_config = candidate_config self.cur_config = None if len(self.candidate_config.items()) != 0: for k, v in candidate_config.items(): candidate_config[k] = list(set(v)) self.ks_set = candidate_config[ 'kernel_size'] if 'kernel_size' in candidate_config else None self.expand_ratio = candidate_config[ 'expand_ratio'] if 'expand_ratio' in candidate_config else None self.channel = candidate_config[ 'channel'] if 'channel' in candidate_config else None self.base_channel = self._out_channels if self.expand_ratio: self.base_channel = int(self._out_channels / max(self.expand_ratio)) self.transform_kernel = transform_kernel if self.ks_set != None: self.ks_set.sort() if self.transform_kernel != False: scale_param = dict() ### create parameter to transform kernel for i in range(len(self.ks_set) - 1): ks_small = self.ks_set[i] ks_large = self.ks_set[i + 1] param_name = '%dto%d_matrix' % (ks_large, ks_small) ks_t = ks_small**2 scale_param[param_name] = self.create_parameter( attr=paddle.ParamAttr( name=self._full_name + param_name, initializer=paddle.nn.initializer.Assign(np.eye(ks_t))), shape=(ks_t, ks_t), dtype=self._dtype) for name, param in scale_param.items(): setattr(self, name, param) def get_active_filter(self, in_nc, out_nc, kernel_size): start, end = compute_start_end(self._kernel_size[0], kernel_size) filters = self.weight[:in_nc, :out_nc, start:end, start:end] if self.transform_kernel != False and kernel_size < self._kernel_size[ 0]: start_filter = self.weight[:in_nc, :out_nc, :, :] for i in range(len(self.ks_set) - 1, 0, -1): src_ks = self.ks_set[i] if src_ks <= kernel_size: break target_ks = self.ks_set[i - 1] start, end = compute_start_end(src_ks, target_ks) _input_filter = start_filter[:, :, start:end, start:end] _input_filter = paddle.reshape( _input_filter, shape=[(_input_filter.shape[0] * _input_filter.shape[1]), -1]) _input_filter = paddle.matmul( _input_filter, self.__getattr__('%dto%d_matrix' % (src_ks, target_ks)), False, False) _input_filter = paddle.reshape( _input_filter, shape=[ filters.shape[0], filters.shape[1], target_ks, target_ks ]) start_filter = _input_filter filters = start_filter return filters def get_groups_in_out_nc(self, in_nc, out_nc): if self._groups == 1: ### standard conv return self._groups, in_nc, out_nc elif self._groups == self._in_channels: ### depthwise convolution if in_nc != out_nc: _logger.debug( "input channel and output channel in depthwise conv is different, change output channel to input channel! origin channel:(in_nc {}, out_nc {}): ". format(in_nc, out_nc)) groups = in_nc out_nc = in_nc return groups, in_nc, out_nc else: ### groups convolution ### groups conv transpose: weight: (Cin, Cout/G, Kh, Kw) groups = self._groups out_nc = int(out_nc // groups) return groups, in_nc, out_nc def forward(self, input, output_size=None, kernel_size=None, expand_ratio=None, channel=None): """ Parameters: input(Tensor): input tensor. output_size(int, optional): the size of the feature map after transpose convolution. Default: None. kernel_size(int, optional): the kernel size of the filter in actual calculation. Default: None. expand_ratio(int|float, optional): the expansion ratio of filter's channel number in actual calculation. Default: None. channel(int, optional): the expansion ratio of filter's channel number in actual calculation. Default: None. """ self.cur_config = { 'kernel_size': kernel_size, 'expand_ratio': expand_ratio, 'channel': channel } in_nc = int(input.shape[1]) assert ( expand_ratio == None or channel == None ), "expand_ratio and channel CANNOT be NOT None at the same time." if expand_ratio != None: out_nc = int(expand_ratio * self.base_channel) elif channel != None: out_nc = int(channel) else: out_nc = self._out_channels ks = int(self._kernel_size[0]) if kernel_size == None else int( kernel_size) groups, weight_in_nc, weight_out_nc = self.get_groups_in_out_nc(in_nc, out_nc) weight = self.get_active_filter(weight_in_nc, weight_out_nc, ks) if kernel_size != None or 'kernel_size' in self.candidate_config.keys(): padding = convert_to_list(get_same_padding(ks), 2) else: padding = self._padding if output_size is None: output_padding = self.output_padding else: output_padding = 0 if self.bias is not None: if groups != in_nc: weight_out_nc = weight_out_nc * groups bias = self.bias[:weight_out_nc] else: bias = self.bias self.cur_config['prune_dim'] = list(weight.shape) self.cur_config['prune_group'] = groups out = paddle.nn.functional.conv2d_transpose( input, weight, bias=bias, padding=padding, output_padding=output_padding, stride=self._stride, dilation=self._dilation, groups=groups, output_size=output_size, data_format=self._data_format) return out class SuperGroupConv2DTranspose(SuperConv2DTranspose): def get_groups_in_out_nc(self, in_nc, out_nc): ### groups convolution ### groups conv transpose: weight: (Cin, Cout/G, Kh, Kw) groups = self._groups out_nc = int(out_nc // groups) return groups, in_nc, out_nc class SuperDepthwiseConv2DTranspose(SuperConv2DTranspose): def get_groups_in_out_nc(self, in_nc, out_nc): if in_nc != out_nc: _logger.debug( "input channel and output channel in depthwise conv transpose is different, change output channel to input channel! origin channel:(in_nc {}, out_nc {}): ". format(in_nc, out_nc)) groups = in_nc out_nc = in_nc return groups, in_nc, out_nc ### NOTE: only search channel, write for GAN-compression, maybe change to SuperDepthwiseConv and SuperConv after. class SuperSeparableConv2D(paddle.nn.Layer): """ This interface is used to construct a callable object of the ``SuperSeparableConv2D`` class. The difference between ```SuperSeparableConv2D``` and ```SeparableConv2D``` is: ```SuperSeparableConv2D``` need to feed a config dictionary with the format of {'channel', num_of_channel} represents the channels of the first conv's outputs and the second conv's inputs, used to change the first dimension of weight and bias, only train the first channels of the weight and bias. The architecture of super separable convolution2D op is [Conv2D, norm layer(may be BatchNorm2D or InstanceNorm2D), Conv2D]. The first conv is depthwise conv, the filter number is input channel multiply scale_factor, the group is equal to the number of input channel. The second conv is standard conv, which filter size and stride size are 1. Parameters: num_channels(int): The number of channels in the input image. num_filters(int): The number of the second conv's filter. It is as same as the output feature map. filter_size(int or tuple): The first conv's filter size. If filter_size is a tuple, it must contain two integers, (filter_size_H, filter_size_W). Otherwise, the filter will be a square. padding(int or tuple, optional): The first conv's padding size. If padding is a tuple, it must contain two integers, (padding_H, padding_W). Otherwise, the padding_H = padding_W = padding. Default: 0. stride(int or tuple, optional): The first conv's stride size. If stride is a tuple, it must contain two integers, (stride_H, stride_W). Otherwise, the stride_H = stride_W = stride. Default: 1. dilation(int or tuple, optional): The first conv's dilation size. If dilation is a tuple, it must contain two integers, (dilation_H, dilation_W). Otherwise, the dilation_H = dilation_W = dilation. Default: 1. norm_layer(class): The normalization layer between two convolution. Default: InstanceNorm2D. bias_attr (ParamAttr or bool, optional): The attribute for the bias of convolution. If it is set to False, no bias will be added to the output units. If it is set to None or one attribute of paddle.ParamAttr, convolution will create paddle.ParamAttr as bias_attr. If the Initializer of the bias_attr is not set, the bias is initialized zero. Default: None. scale_factor(float): The scale factor of the first conv's output channel. Default: 1. Returns: None """ def __init__(self, in_channels, out_channels, kernel_size, candidate_config={}, stride=1, padding=0, dilation=1, norm_layer=paddle.nn.InstanceNorm2D, bias_attr=None, scale_factor=1): super(SuperSeparableConv2D, self).__init__() self.conv = paddle.nn.LayerList([ paddle.nn.Conv2D( in_channels=in_channels, out_channels=in_channels * scale_factor, kernel_size=kernel_size, stride=stride, padding=padding, groups=in_channels, bias_attr=bias_attr) ]) self.conv.extend([norm_layer(in_channels * scale_factor)]) self.conv.extend([ paddle.nn.Conv2D( in_channels=in_channels * scale_factor, out_channels=out_channels, kernel_size=1, stride=1, bias_attr=bias_attr) ]) self.candidate_config = candidate_config self.cur_config = None self.expand_ratio = candidate_config[ 'expand_ratio'] if 'expand_ratio' in candidate_config else None self.base_output_dim = self.conv[0]._out_channels if self.expand_ratio != None: self.base_output_dim = int(self.conv[0]._out_channels / max(self.expand_ratio)) def forward(self, input, expand_ratio=None, channel=None): """ Parameters: input(Tensor): input tensor. expand_ratio(int|float, optional): the expansion ratio of filter's channel number in actual calculation. Default: None. channel(int, optional): the expansion ratio of filter's channel number in actual calculation. Default: None. """ self.cur_config = {'expand_ratio': expand_ratio, 'channel': channel} in_nc = int(input.shape[1]) assert ( expand_ratio == None or channel == None ), "expand_ratio and channel CANNOT be NOT None at the same time." if expand_ratio != None: out_nc = int(expand_ratio * self.base_output_dim) elif channel != None: out_nc = int(channel) else: out_nc = self.conv[0]._out_channels weight = self.conv[0].weight[:in_nc] ### conv1 if self.conv[0].bias is not None: bias = self.conv[0].bias[:in_nc] else: bias = self.conv[0].bias conv0_out = paddle.nn.functional.conv2d( input, weight, bias, stride=self.conv[0]._stride, padding=self.conv[0]._padding, dilation=self.conv[0]._dilation, groups=in_nc, data_format=self.conv[0]._data_format) norm_out = self.conv[1](conv0_out) weight = self.conv[2].weight[:out_nc, :in_nc, :, :] if self.conv[2].bias is not None: bias = self.conv[2].bias[:out_nc] else: bias = self.conv[2].bias self.cur_config['prune_dim'] = list(weight.shape) conv1_out = paddle.nn.functional.conv2d( norm_out, weight, bias, stride=self.conv[2]._stride, padding=self.conv[2]._padding, dilation=self.conv[2]._dilation, groups=self.conv[2]._groups, data_format=self.conv[2]._data_format) return conv1_out class SuperLinear(paddle.nn.Linear): """ Super Fully-connected linear transformation layer. For each input :math:`X` , the equation is: .. math:: Out = XW + b where :math:`W` is the weight and :math:`b` is the bias. Linear layer takes only one multi-dimensional tensor as input with the shape :math:`[batch\\_size, *, in\\_features]` , where :math:`*` means any number of additional dimensions. It multiplies input tensor with the weight (a 2-D tensor of shape :math:`[in\\_features, out\\_features]` ) and produces an output tensor of shape :math:`[batch\\_size, *, out\\_features]` . If :math:`bias\\_attr` is not False, the bias (a 1-D tensor of shape :math:`[out\\_features]` ) will be created and added to the output. Parameters: in_features (int): The number of input units. out_features (int): The number of output units. candidate_config(dict, optional): Dictionary descripts candidate config of this layer, such as {'channel': (4, 6, 8)}, the key of candidate_config only can be 'channel' and 'expand_ratio', 'channel' and 'expand_ratio' CANNOT be set at the same time. Default: None. weight_attr (ParamAttr, optional): The attribute for the learnable weight of this layer. The default value is None and the weight will be initialized to zero. For detailed information, please refer to paddle.ParamAttr. bias_attr (ParamAttr|bool, optional): The attribute for the learnable bias of this layer. If it is set to False, no bias will be added to the output. If it is set to None or one kind of paddle.ParamAttr, a bias parameter will be created according to paddle.ParamAttr. For detailed information, please refer to paddle.ParamAttr. The default value is None and the bias will be initialized to zero. name (str, optional): Normally there is no need for user to set this parameter. For detailed information, please refer to :ref:`api_guide_Name` . Attribute: **weight** (Parameter): the learnable weight of this layer. **bias** (Parameter): the learnable bias of this layer. Shape: - input: Multi-dimentional tensor with shape :math:`[batch\\_size, *, in\\_features]` . - output: Multi-dimentional tensor with shape :math:`[batch\\_size, *, out\\_features]` . Examples: .. code-block:: python import numpy as np import paddle from paddleslim.nas.ofa.layers import SuperLinear data = np.random.uniform(-1, 1, [32, 64]).astype('float32') config = {'channel': 16} linear = SuperLinear(64, 64) data = paddle.to_tensor(data) res = linear(data, **config) """ def __init__(self, in_features, out_features, candidate_config={}, weight_attr=None, bias_attr=None, name=None): super(SuperLinear, self).__init__(in_features, out_features, weight_attr, bias_attr, name) self._weight_attr = weight_attr self._bias_attr = bias_attr self._in_features = in_features self._out_features = out_features self.candidate_config = candidate_config self.cur_config = None self.expand_ratio = candidate_config[ 'expand_ratio'] if 'expand_ratio' in candidate_config else None self.base_output_dim = self._out_features if self.expand_ratio != None: self.base_output_dim = int(self._out_features / max(self.expand_ratio)) def forward(self, input, expand_ratio=None, channel=None): """ Parameters: input(Tensor): input tensor. expand_ratio(int|float, optional): the expansion ratio of filter's channel number in actual calculation. Default: None. channel(int, optional): the expansion ratio of filter's channel number in actual calculation. Default: None. """ self.cur_config = {'expand_ratio': expand_ratio, 'channel': channel} ### weight: (Cin, Cout) in_nc = int(input.shape[-1]) assert ( expand_ratio == None or channel == None ), "expand_ratio and channel CANNOT be NOT None at the same time." if expand_ratio != None: out_nc = int(expand_ratio * self.base_output_dim) elif channel != None: out_nc = int(channel) else: out_nc = self._out_features if self.weight.shape[0] <= in_nc and self.weight.shape[1] <= out_nc: weight = self.weight else: weight = self.weight[:in_nc, :out_nc] if self._bias_attr != False: if self.bias.shape[0] <= out_nc: bias = self.bias else: bias = self.bias[:out_nc] else: bias = self.bias self.cur_config['prune_dim'] = list(weight.shape) out = paddle.nn.functional.linear( x=input, weight=weight, bias=bias, name=self.name) return out class SuperBatchNorm2D(paddle.nn.BatchNorm2D): """ This interface is used to construct a callable object of the ``SuperBatchNorm2D`` class. Parameters: num_features(int): Indicate the number of channels of the input ``Tensor``. epsilon(float, optional): The small value added to the variance to prevent division by zero. Default: 1e-5. momentum(float, optional): The value used for the moving_mean and moving_var computation. Default: 0.9. weight_attr(ParamAttr|bool, optional): The parameter attribute for Parameter `scale` of batch_norm. If it is set to None or one attribute of paddle.ParamAttr, batch_norm will create paddle.ParamAttr as weight_attr. If it is set to Fasle, the weight is not learnable. If the Initializer of the weight_attr is not set, the parameter is initialized with Xavier. Default: None. bias_attr(ParamAttr|bool, optional): The parameter attribute for the bias of batch_norm. If it is set to None or one attribute of paddle.ParamAttr, batch_norm will create paddle.ParamAttr as bias_attr. If it is set to Fasle, the weight is not learnable. If the Initializer of the bias_attr is not set, the bias is initialized zero. Default: None. data_format(str, optional): Specify the input data format, the data format can be "NCHW" or "NHWC". Default: NCHW. name(str, optional): Name for the BatchNorm, default is None. For more information, please refer to :ref:`api_guide_Name`.. Examples: .. code-block:: python import paddle import numpy as np from paddleslim.nas.ofa.layers import SuperBatchNorm2D np.random.seed(123) x_data = np.random.random(size=(2, 5, 2, 3)).astype('float32') x = paddle.to_tensor(x_data) batch_norm = SuperBatchNorm2D(5) batch_norm_out = batch_norm(x) """ def __init__(self, num_features, momentum=0.9, epsilon=1e-05, weight_attr=None, bias_attr=None, data_format='NCHW', use_global_stats=None, name=None): super(SuperBatchNorm2D, self).__init__( num_features, momentum, epsilon, weight_attr, bias_attr, data_format, use_global_stats, name) self.cur_config = None def forward(self, input): self._check_data_format(self._data_format) self._check_input_dim(input) feature_dim = int(input.shape[1]) if self.weight.shape[0] <= feature_dim: weight = self.weight else: weight = self.weight[:feature_dim] if self.bias.shape[0] <= feature_dim: bias = self.bias else: bias = self.bias[:feature_dim] if self._mean.shape[0] <= feature_dim: mean = self._mean else: mean = self._mean[:feature_dim] if self._variance.shape[0] <= feature_dim: variance = self._variance else: variance = self._variance[:feature_dim] mean_out = self._mean variance_out = self._variance mean_out_tmp = mean variance_out_tmp = variance if self._use_global_stats == None: self._use_global_stats = not self.training trainable_statistics = False else: trainable_statistics = not self._use_global_stats attrs = ("momentum", self._momentum, "epsilon", self._epsilon, "is_test", not self.training, "data_layout", self._data_format, "use_mkldnn", False, "fuse_with_relu", False, "use_global_stats", self._use_global_stats, "trainable_statistics", trainable_statistics) if in_dygraph_mode(): paddle_compile = os.environ.get("paddle_compile") if feature_dim != self._mean.shape[0]: if not paddle_compile or "Develop" in paddle_compile: # fit paddle develop batch_norm_out, t1, t2, t3, t4, _ = paddle._C_ops.batch_norm( input, mean, variance, weight, bias, not self.training, self._momentum, self._epsilon, self._data_format, self._use_global_stats, trainable_statistics) else: # fit paddle release batch_norm_out, t1, t2, t3, t4, _ = paddle._C_ops.batch_norm( input, weight, bias, mean, variance, self._momentum, self._epsilon, self._data_format, not self.training, self._use_global_stats, trainable_statistics, False, False) self._mean[:feature_dim].set_value(mean) self._variance[:feature_dim].set_value(variance) mean_out[:feature_dim].set_value(mean_out_tmp) variance_out[:feature_dim].set_value(variance_out_tmp) return batch_norm_out else: if not paddle_compile or "Develop" in paddle_compile: # fit paddle develop batch_norm_out, t1, t2, t3, t4, _ = paddle._C_ops.batch_norm( input, mean, variance, weight, bias, not self.training, self._momentum, self._epsilon, self._data_format, self._use_global_stats, trainable_statistics) else: # fit paddle release batch_norm_out, t1, t2, t3, t4, _ = paddle._C_ops.batch_norm( input, weight, bias, mean, variance, self._momentum, self._epsilon, self._data_format, not self.training, self._use_global_stats, trainable_statistics, False) return batch_norm_out paddle.common_ops_import.check_variable_and_dtype( input, 'input', ['float16', 'float32', 'float64'], 'BatchNorm') # for static need dict attrs = { "momentum": self._momentum, "epsilon": self._epsilon, "is_test": not self.training, "data_layout": self._data_format, "use_mkldnn": False, "fuse_with_relu": False, "use_global_stats": self._use_global_stats, "trainable_statistics": trainable_statistics, } inputs = { "X": [input], "Scale": [weight], "Bias": [bias], "Mean": [mean], "Variance": [variance] } helper = paddle.fluid.dygraph.layer_object_helper.LayerObjectHelper( 'batch_norm') param_dtype = input.dtype if input.dtype != 'float16' else 'float32' saved_mean = helper.create_variable_for_type_inference( dtype=param_dtype, stop_gradient=True) saved_variance = helper.create_variable_for_type_inference( dtype=param_dtype, stop_gradient=True) batch_norm_out = helper.create_variable_for_type_inference(input.dtype) outputs = { "Y": [batch_norm_out], "MeanOut": [mean], "VarianceOut": [variance], "SavedMean": [saved_mean], "SavedVariance": [saved_variance] } if self.training or trainable_statistics: # reserve_space is only used for training. reserve_space = helper.create_variable_for_type_inference( dtype=input.dtype, stop_gradient=True) outputs["ReserveSpace"] = [reserve_space] helper.append_op( type="batch_norm", inputs=inputs, outputs=outputs, attrs=attrs) self.cur_config = {'prune_dim': feature_dim} return batch_norm_out class SuperSyncBatchNorm(paddle.nn.SyncBatchNorm): def __init__(self, num_features, momentum=0.9, epsilon=1e-05, weight_attr=None, bias_attr=None, data_format='NCHW', name=None): super(SuperSyncBatchNorm, self).__init__(num_features, momentum, epsilon, weight_attr, bias_attr, data_format, name) self.cur_config = None def forward(self, input): self._check_data_format() feature_dim = int(input.shape[1]) weight = self.weight[:feature_dim] bias = self.bias[:feature_dim] mean = self._mean[:feature_dim] variance = self._variance[:feature_dim] mean_out = self._mean variance_out = self._variance mean_out_tmp = mean variance_out_tmp = variance self.cur_config = {'prune_dim': feature_dim} attrs = ("momentum", self._momentum, "epsilon", self._epsilon, "is_test", not self.training, "data_layout", self._data_format, "use_mkldnn", False, "fuse_with_relu", False, "use_global_stats", False, 'trainable_statistics', False) if paddle.in_dynamic_mode(): if feature_dim != self._mean.shape[0]: sync_batch_norm_out, _, _, _, _, _ = paddle._legacy_C_ops.sync_batch_norm( input, weight, bias, self._mean, self._variance, mean_out, variance_out, *attrs) self._mean[:feature_dim].set_value(mean) self._variance[:feature_dim].set_value(variance) mean_out[:feature_dim].set_value(mean_out_tmp) variance_out[:feature_dim].set_value(variance_out_tmp) else: sync_batch_norm_out, _, _, _, _, _ = paddle._legacy_C_ops.sync_batch_norm( input, weight, bias, self._mean, self._variance, mean_out, variance_out, *attrs) return sync_batch_norm_out paddle.common_ops_import.check_variable_and_dtype( input, 'input', ['float16', 'float32', 'float64'], 'SyncBatchNorm') attrs = { "momentum": self._momentum, "epsilon": self._epsilon, "is_test": not self.training, "data_layout": self._data_format, "use_mkldnn": False, "fuse_with_relu": False, "use_global_stats": False, "trainable_statistics": False, } inputs = { "X": [input], "Scale": [weight], "Bias": [bias], "Mean": [self._mean], "Variance": [self._variance] } helper = paddle.fluid.dygraph.layer_object_helper.LayerObjectHelper( 'sync_batch_norm') saved_mean = helper.create_variable_for_type_inference( dtype=self._dtype, stop_gradient=True) saved_variance = helper.create_variable_for_type_inference( dtype=self._dtype, stop_gradient=True) sync_batch_norm_out = helper.create_variable_for_type_inference( self._dtype) outputs = { "Y": [sync_batch_norm_out], "MeanOut": [mean_out], "VarianceOut": [variance_out], "SavedMean": [saved_mean], "SavedVariance": [saved_variance] } helper.append_op( type="sync_batch_norm", inputs=inputs, outputs=outputs, attrs=attrs) return sync_batch_norm_out class SuperInstanceNorm2D(paddle.nn.InstanceNorm2D): """ This interface is used to construct a callable object of the ``SuperInstanceNorm2D`` class. Parameters: num_features(int): Indicate the number of channels of the input ``Tensor``. epsilon(float, optional): The small value added to the variance to prevent division by zero. Default: 1e-5. momentum(float, optional): The value used for the moving_mean and moving_var computation. Default: 0.9. weight_attr(ParamAttr|bool, optional): The parameter attribute for Parameter `scale` of batch_norm. If it is set to None or one attribute of paddle.ParamAttr, batch_norm will create paddle.ParamAttr as weight_attr. If it is set to Fasle, the weight is not learnable. If the Initializer of the weight_attr is not set, the parameter is initialized with Xavier. Default: None. bias_attr(ParamAttr|bool, optional): The parameter attribute for the bias of batch_norm. If it is set to None or one attribute of paddle.ParamAttr, batch_norm will create paddle.ParamAttr as bias_attr. If it is set to Fasle, the weight is not learnable. If the Initializer of the bias_attr is not set, the bias is initialized zero. Default: None. data_format(str, optional): Specify the input data format, the data format can be "NCHW" or "NHWC". Default: NCHW. name(str, optional): Name for the BatchNorm, default is None. For more information, please refer to :ref:`api_guide_Name`.. Examples: .. code-block:: python import paddle import numpy as np from paddleslim.nas.ofa.layers import SuperInstanceNorm2D np.random.seed(123) x_data = np.random.random(size=(2, 5, 2, 3)).astype('float32') x = paddle.to_tensor(x_data) instance_norm = SuperInstanceNorm2D(5) out = instance_norm(x) """ def __init__(self, num_features, epsilon=1e-05, momentum=0.9, weight_attr=None, bias_attr=None, data_format='NCHW', name=None): super(SuperInstanceNorm2D, self).__init__(num_features, epsilon, momentum, weight_attr, bias_attr, data_format, name) self.cur_config = None def forward(self, input): self._check_input_dim(input) feature_dim = int(input.shape[1]) if self._weight_attr == False and self._bias_attr == False: scale = None bias = None else: scale = self.scale[:feature_dim] bias = self.bias[:feature_dim] self.cur_config = {'prune_dim': feature_dim} return paddle.nn.functional.instance_norm( input, scale, bias, eps=self._epsilon) class SuperLayerNorm(paddle.nn.LayerNorm): """ This interface is used to construct a callable object of the ``SuperLayerNorm`` class. The difference between ```SuperLayerNorm``` and ```LayerNorm``` is: the trained weight and bias in ```SuperLayerNorm``` can be changed according to the shape of input, only train the first channels of the weight and bias. Parameters: normalized_shape(int|list|tuple): Input shape from an expected input of size :math:`[*, normalized_shape[0], normalized_shape[1], ..., normalized_shape[-1]]`. If it is a single integer, this module will normalize over the last dimension which is expected to be of that specific size. epsilon(float, optional): The small value added to the variance to prevent division by zero. Default: 1e-05. weight_attr(ParamAttr|bool, optional): The parameter attribute for the learnable gain :math:`g`. If False, weight is None. If is None, a default :code:`ParamAttr` would be added as scale. The :attr:`param_attr` is initialized as 1 if it is added. Default: None. bias_attr(ParamAttr|bool, optional): The parameter attribute for the learnable bias :math:`b`. If is False, bias is None. If is None, a default :code:`ParamAttr` would be added as bias. The :attr:`bias_attr` is initialized as 0 if it is added. Default: None. name(str, optional): Name for the LayerNorm, default is None. For more information, please refer to :ref:`api_guide_Name`.. Shape: - x: 2-D, 3-D, 4-D or 5-D tensor. - output: same shape as input x. Returns: None Examples: .. code-block:: python import paddle import numpy as np from paddleslim.nas.ofa.layers import SuperLayerNorm np.random.seed(123) x_data = np.random.random(size=(2, 3)).astype('float32') x = paddle.to_tensor(x_data) layer_norm = SuperLayerNorm(x_data.shape[1]) layer_norm_out = layer_norm(x) """ def __init__(self, normalized_shape, epsilon=1e-05, weight_attr=None, bias_attr=None, name=None): super(SuperLayerNorm, self).__init__(normalized_shape, epsilon, weight_attr, bias_attr, name) self.cur_config = None def forward(self, input): ### TODO(ceci3): fix if normalized_shape is not a single number input_ndim = len(list(input.shape)) normalized_ndim = len(self._normalized_shape) begin_norm_axis = input_ndim - normalized_ndim feature_dim = int(input.shape[-1]) if self._weight_attr != False: if self.weight.shape[0] <= feature_dim: weight = self.weight else: weight = self.weight[:feature_dim] else: weight = None if self._bias_attr != False: if self.bias.shape[0] <= feature_dim: bias = self.bias else: bias = self.bias[:feature_dim] else: bias = None self.cur_config = {'prune_dim': feature_dim} if paddle.in_dynamic_mode(): out, _, _ = paddle._C_ops.layer_norm( input, weight, bias, self._epsilon, begin_norm_axis, False) else: paddle.common_ops_import.check_variable_and_dtype( input, 'input', ['float32', 'float64'], 'LayerNorm') inputs = dict() inputs['X'] = [input] if weight: inputs['Scale'] = [weight] if bias: inputs['Bias'] = [bias] attrs = { "epsilon": self._epsilon, "begin_norm_axis": begin_norm_axis } helper = paddle.fluid.dygraph.layer_object_helper.LayerObjectHelper( 'layer_norm') dtype = input.dtype mean_out = helper.create_variable_for_type_inference( dtype=dtype, stop_gradient=True) variance_out = helper.create_variable_for_type_inference( dtype=dtype, stop_gradient=True) layer_norm_out = helper.create_variable_for_type_inference(dtype) helper.append_op( type="layer_norm", inputs=inputs, outputs={ "Y": layer_norm_out, "Mean": mean_out, "Variance": variance_out, }, attrs={ "epsilon": self._epsilon, "begin_norm_axis": begin_norm_axis }) return layer_norm_out return out class SuperEmbedding(paddle.nn.Embedding): """ This interface is used to construct a callable object of the ``SuperEmbedding`` class. Parameters: num_embeddings (int): Just one element which indicate the size of the dictionary of embeddings. embedding_dim: Just one element which indicate the size of each embedding vector respectively. padding_idx(int|long|None): padding_idx needs to be in the interval [-num_embeddings, num_embeddings). If :math:`padding\\_idx < 0`, the :math:`padding\\_idx` will automatically be converted to :math:`vocab\\_size + padding\\_idx` . It will output all-zero padding data whenever lookup encounters :math:`padding\\_idx` in id. And the padding data will not be updated while training. If set None, it makes no effect to output. Default: None. sparse(bool): The flag indicating whether to use sparse update. This parameter only affects the performance of the backwards gradient update. It is recommended to set True because sparse update is faster. But some optimizer does not support sparse update, such as :ref:`api_optimizer_AdadeltaOptimizer` , :ref:`api_optimizer_AdamaxOptimizer` , :ref:`api_optimizer_DecayedAdagradOptimizer` , :ref:`api_optimizer_FtrlOptimizer` , :ref:`api_optimizer_LambOptimizer` and :ref:`api_optimizer_LarsMomentumOptimizer` . In these case, sparse must be False. Default: False. weight_attr(ParamAttr): To specify the weight parameter property. Default: None, which means the default weight parameter property is used. See usage for details in :ref:`api_ParamAttr` . In addition, user-defined or pre-trained word vectors can be loaded with the :attr:`param_attr` parameter. The local word vector needs to be transformed into numpy format, and the shape of local word vector should be consistent with :attr:`num_embeddings` . Then :ref:`api_initializer_Assign` is used to load custom or pre-trained word vectors. See code example for details. name(str|None): For detailed information, please refer to :ref:`api_guide_Name`. Usually name is no need to set and None by default. Attribute: **weight** (Parameter): the learnable weights of this layer. Returns: None Examples: .. code-block:: python import numpy as np import paddle from paddleslim.nas.ofa.layers import SuperEmbedding data = np.random.uniform(-1, 1, [32, 64]).astype('int64') config = {'channel': 16} emb = SuperEmbedding(64, 64) data = paddle.to_tensor(data) res = emb(data, **config) """ def __init__(self, num_embeddings, embedding_dim, candidate_config={}, padding_idx=None, sparse=False, weight_attr=None, name=None): super(SuperEmbedding, self).__init__(num_embeddings, embedding_dim, padding_idx, sparse, weight_attr, name) self.candidate_config = candidate_config self.cur_config = None self.expand_ratio = candidate_config[ 'expand_ratio'] if 'expand_ratio' in candidate_config else None self.base_output_dim = self._embedding_dim if self.expand_ratio != None: self.base_output_dim = int(self._embedding_dim / max(self.expand_ratio)) def forward(self, input, expand_ratio=None, channel=None): """ Parameters: input(Tensor): input tensor. expand_ratio(int|float, optional): the expansion ratio of filter's channel number in actual calculation. Default: None. channel(int, optional): the expansion ratio of filter's channel number in actual calculation. Default: None. """ assert ( expand_ratio == None or channel == None ), "expand_ratio and channel CANNOT be NOT None at the same time." if expand_ratio != None: out_nc = int(expand_ratio * self.base_output_dim) elif channel != None: out_nc = int(channel) else: out_nc = self._embedding_dim if self.weight.shape[1] <= out_nc: weight = self.weight else: weight = self.weight[:, :out_nc] self.cur_config = {'prune_dim': list(weight.shape)} return paddle.nn.functional.embedding( input, weight=weight, padding_idx=self._padding_idx, sparse=self._sparse, name=self._name)