wehub-resource-sync
687 lines
22 KiB
Python
Executable File
687 lines
22 KiB
Python
Executable File
from typing import Tuple, Dict
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import copy
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import os
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import numpy as np
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import torch
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import torch.nn as nn
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import torch.nn.functional as F
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from funasr.register import tables
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def toKaldiMatrix(np_mat):
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"""Tokaldimatrix.
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Args:
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np_mat: TODO.
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"""
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np.set_printoptions(threshold=np.inf, linewidth=np.nan)
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out_str = str(np_mat)
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out_str = out_str.replace('[', '')
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out_str = out_str.replace(']', '')
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return '[ %s ]\n' % out_str
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class LinearTransform(nn.Module):
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def __init__(self, input_dim, output_dim):
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"""Initialize LinearTransform.
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Args:
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input_dim: Size/dimension parameter.
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output_dim: Size/dimension parameter.
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"""
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super(LinearTransform, self).__init__()
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self.input_dim = input_dim
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self.output_dim = output_dim
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self.linear = nn.Linear(input_dim, output_dim, bias=False)
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def forward(self, input):
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"""Forward pass for training.
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Args:
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input: Input audio/text data.
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"""
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output = self.linear(input)
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return output
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def to_kaldi_net(self):
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"""To kaldi net."""
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re_str = ''
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re_str += '<LinearTransform> %d %d\n' % (self.output_dim,
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self.input_dim)
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re_str += '<LearnRateCoef> 1\n'
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linear_weights = self.state_dict()['linear.weight']
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x = linear_weights.squeeze().numpy()
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re_str += toKaldiMatrix(x)
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return re_str
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def to_pytorch_net(self, fread):
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"""To pytorch net.
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Args:
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fread: TODO.
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"""
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linear_line = fread.readline()
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linear_split = linear_line.strip().split()
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assert len(linear_split) == 3
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assert linear_split[0] == '<LinearTransform>'
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self.output_dim = int(linear_split[1])
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self.input_dim = int(linear_split[2])
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learn_rate_line = fread.readline()
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assert learn_rate_line.find('LearnRateCoef') != -1
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self.linear.reset_parameters()
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linear_weights = self.state_dict()['linear.weight']
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#print(linear_weights.shape)
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new_weights = torch.zeros((self.output_dim, self.input_dim),
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dtype=torch.float32)
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for i in range(self.output_dim):
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line = fread.readline()
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splits = line.strip().strip('\[\]').strip().split()
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assert len(splits) == self.input_dim
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cols = torch.tensor([float(item) for item in splits],
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dtype=torch.float32)
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new_weights[i, :] = cols
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self.linear.weight.data = new_weights
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class AffineTransform(nn.Module):
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def __init__(self, input_dim, output_dim):
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"""Initialize AffineTransform.
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Args:
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input_dim: Size/dimension parameter.
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output_dim: Size/dimension parameter.
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"""
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super(AffineTransform, self).__init__()
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self.input_dim = input_dim
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self.output_dim = output_dim
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self.linear = nn.Linear(input_dim, output_dim)
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def forward(self, input):
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"""Forward pass for training.
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Args:
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input: Input audio/text data.
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"""
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output = self.linear(input)
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return output
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def to_kaldi_net(self):
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"""To kaldi net."""
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re_str = ''
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re_str += '<AffineTransform> %d %d\n' % (self.output_dim,
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self.input_dim)
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re_str += '<LearnRateCoef> 1 <BiasLearnRateCoef> 1 <MaxNorm> 0\n'
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linear_weights = self.state_dict()['linear.weight']
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x = linear_weights.squeeze().numpy()
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re_str += toKaldiMatrix(x)
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linear_bias = self.state_dict()['linear.bias']
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x = linear_bias.squeeze().numpy()
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re_str += toKaldiMatrix(x)
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return re_str
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def to_pytorch_net(self, fread):
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"""To pytorch net.
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Args:
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fread: TODO.
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"""
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affine_line = fread.readline()
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affine_split = affine_line.strip().split()
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assert len(affine_split) == 3
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assert affine_split[0] == '<AffineTransform>'
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self.output_dim = int(affine_split[1])
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self.input_dim = int(affine_split[2])
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print('AffineTransform output/input dim: %d %d' %
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(self.output_dim, self.input_dim))
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learn_rate_line = fread.readline()
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assert learn_rate_line.find('LearnRateCoef') != -1
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#linear_weights = self.state_dict()['linear.weight']
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#print(linear_weights.shape)
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self.linear.reset_parameters()
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new_weights = torch.zeros((self.output_dim, self.input_dim),
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dtype=torch.float32)
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for i in range(self.output_dim):
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line = fread.readline()
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splits = line.strip().strip('\[\]').strip().split()
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assert len(splits) == self.input_dim
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cols = torch.tensor([float(item) for item in splits],
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dtype=torch.float32)
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new_weights[i, :] = cols
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self.linear.weight.data = new_weights
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linear_bias = self.state_dict()['linear.bias']
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#print(linear_bias.shape)
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bias_line = fread.readline()
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splits = bias_line.strip().strip('\[\]').strip().split()
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assert len(splits) == self.output_dim
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new_bias = torch.tensor([float(item) for item in splits],
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dtype=torch.float32)
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self.linear.bias.data = new_bias
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class RectifiedLinear(nn.Module):
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def __init__(self, input_dim, output_dim):
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"""Initialize RectifiedLinear.
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Args:
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input_dim: Size/dimension parameter.
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output_dim: Size/dimension parameter.
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"""
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super(RectifiedLinear, self).__init__()
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self.dim = input_dim
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self.relu = nn.ReLU()
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self.dropout = nn.Dropout(0.1)
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def forward(self, input):
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"""Forward pass for training.
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Args:
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input: Input audio/text data.
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"""
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out = self.relu(input)
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return out
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def to_kaldi_net(self):
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"""To kaldi net."""
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re_str = ''
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re_str += '<RectifiedLinear> %d %d\n' % (self.dim, self.dim)
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return re_str
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def to_pytorch_net(self, fread):
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"""To pytorch net.
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Args:
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fread: TODO.
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"""
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line = fread.readline()
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splits = line.strip().split()
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assert len(splits) == 3
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assert splits[0] == '<RectifiedLinear>'
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assert int(splits[1]) == int(splits[2])
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assert int(splits[1]) == self.dim
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self.dim = int(splits[1])
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class FSMNBlock(nn.Module):
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def __init__(
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self,
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input_dim: int,
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output_dim: int,
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lorder=None,
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rorder=None,
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lstride=1,
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rstride=1,
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):
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"""Initialize FSMNBlock.
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Args:
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input_dim: Size/dimension parameter.
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output_dim: Size/dimension parameter.
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lorder: TODO.
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rorder: TODO.
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lstride: TODO.
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rstride: TODO.
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"""
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super(FSMNBlock, self).__init__()
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self.dim = input_dim
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if lorder is None:
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return
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self.lorder = lorder
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self.rorder = rorder
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self.lstride = lstride
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self.rstride = rstride
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self.conv_left = nn.Conv2d(
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self.dim, self.dim, [lorder, 1], dilation=[lstride, 1], groups=self.dim, bias=False
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)
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if self.rorder > 0:
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self.conv_right = nn.Conv2d(
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self.dim, self.dim, [rorder, 1], dilation=[rstride, 1], groups=self.dim, bias=False
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)
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else:
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self.conv_right = None
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def forward(self, input: torch.Tensor, cache: torch.Tensor = None):
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"""Forward pass for training.
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Args:
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input: Input audio/text data.
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cache: State cache dict for streaming inference.
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"""
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x = torch.unsqueeze(input, 1)
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x_per = x.permute(0, 3, 2, 1) # B D T C
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if cache is not None:
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cache = cache.to(x_per.device)
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y_left = torch.cat((cache, x_per), dim=2)
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cache = y_left[:, :, -(self.lorder - 1) * self.lstride :, :]
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else:
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y_left = F.pad(x_per, [0, 0, (self.lorder - 1) * self.lstride, 0])
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y_left = self.conv_left(y_left)
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out = x_per + y_left
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if self.conv_right is not None:
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# maybe need to check
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y_right = F.pad(x_per, [0, 0, 0, self.rorder * self.rstride])
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y_right = y_right[:, :, self.rstride :, :]
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y_right = self.conv_right(y_right)
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out += y_right
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out_per = out.permute(0, 3, 2, 1)
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output = out_per.squeeze(1)
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return output, cache
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def to_kaldi_net(self):
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"""To kaldi net."""
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re_str = ''
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re_str += '<Fsmn> %d %d\n' % (self.dim, self.dim)
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re_str += '<LearnRateCoef> %d <LOrder> %d <ROrder> %d <LStride> %d <RStride> %d <MaxNorm> 0\n' % (
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1, self.lorder, self.rorder, self.lstride, self.rstride)
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#print(self.conv_left.weight,self.conv_right.weight)
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lfiters = self.state_dict()['conv_left.weight']
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x = np.flipud(lfiters.squeeze().numpy().T)
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re_str += toKaldiMatrix(x)
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if self.conv_right is not None:
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rfiters = self.state_dict()['conv_right.weight']
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x = (rfiters.squeeze().numpy().T)
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re_str += toKaldiMatrix(x)
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return re_str
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def to_pytorch_net(self, fread):
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"""To pytorch net.
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Args:
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fread: TODO.
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"""
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fsmn_line = fread.readline()
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fsmn_split = fsmn_line.strip().split()
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assert len(fsmn_split) == 3
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assert fsmn_split[0] == '<Fsmn>'
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self.dim = int(fsmn_split[1])
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params_line = fread.readline()
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params_split = params_line.strip().strip('\[\]').strip().split()
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assert len(params_split) == 12
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assert params_split[0] == '<LearnRateCoef>'
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assert params_split[2] == '<LOrder>'
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self.lorder = int(params_split[3])
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assert params_split[4] == '<ROrder>'
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self.rorder = int(params_split[5])
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assert params_split[6] == '<LStride>'
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self.lstride = int(params_split[7])
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assert params_split[8] == '<RStride>'
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self.rstride = int(params_split[9])
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assert params_split[10] == '<MaxNorm>'
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#lfilters = self.state_dict()['conv_left.weight']
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#print(lfilters.shape)
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print('read conv_left weight')
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new_lfilters = torch.zeros((self.lorder, 1, self.dim, 1),
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dtype=torch.float32)
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for i in range(self.lorder):
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print('read conv_left weight -- %d' % i)
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line = fread.readline()
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splits = line.strip().strip('\[\]').strip().split()
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assert len(splits) == self.dim
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cols = torch.tensor([float(item) for item in splits],
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dtype=torch.float32)
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new_lfilters[self.lorder - 1 - i, 0, :, 0] = cols
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new_lfilters = torch.transpose(new_lfilters, 0, 2)
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#print(new_lfilters.shape)
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self.conv_left.reset_parameters()
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self.conv_left.weight.data = new_lfilters
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#print(self.conv_left.weight.shape)
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if self.rorder > 0:
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#rfilters = self.state_dict()['conv_right.weight']
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#print(rfilters.shape)
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print('read conv_right weight')
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new_rfilters = torch.zeros((self.rorder, 1, self.dim, 1),
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dtype=torch.float32)
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line = fread.readline()
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for i in range(self.rorder):
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print('read conv_right weight -- %d' % i)
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line = fread.readline()
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splits = line.strip().strip('\[\]').strip().split()
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assert len(splits) == self.dim
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cols = torch.tensor([float(item) for item in splits],
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dtype=torch.float32)
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new_rfilters[i, 0, :, 0] = cols
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new_rfilters = torch.transpose(new_rfilters, 0, 2)
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#print(new_rfilters.shape)
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self.conv_right.reset_parameters()
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self.conv_right.weight.data = new_rfilters
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#print(self.conv_right.weight.shape)
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class BasicBlock(nn.Module):
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def __init__(
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self,
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linear_dim: int,
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proj_dim: int,
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lorder: int,
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rorder: int,
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lstride: int,
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rstride: int,
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stack_layer: int,
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):
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"""Initialize BasicBlock.
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Args:
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linear_dim: Size/dimension parameter.
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proj_dim: Size/dimension parameter.
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lorder: TODO.
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rorder: TODO.
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lstride: TODO.
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rstride: TODO.
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stack_layer: TODO.
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"""
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super(BasicBlock, self).__init__()
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self.lorder = lorder
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self.rorder = rorder
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self.lstride = lstride
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self.rstride = rstride
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self.stack_layer = stack_layer
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self.linear = LinearTransform(linear_dim, proj_dim)
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self.fsmn_block = FSMNBlock(proj_dim, proj_dim, lorder, rorder, lstride, rstride)
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self.affine = AffineTransform(proj_dim, linear_dim)
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self.relu = RectifiedLinear(linear_dim, linear_dim)
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def forward(self, input: torch.Tensor, cache: Dict[str, torch.Tensor] = None):
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"""Forward pass for training.
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Args:
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input: Input audio/text data.
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cache: State cache dict for streaming inference.
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"""
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x1 = self.linear(input) # B T D
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if cache is not None:
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cache_layer_name = 'cache_layer_{}'.format(self.stack_layer)
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if cache_layer_name not in cache:
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cache[cache_layer_name] = torch.zeros(
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x1.shape[0], x1.shape[-1], (self.lorder - 1) * self.lstride, 1
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)
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x2, cache[cache_layer_name] = self.fsmn_block(x1, cache[cache_layer_name])
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else:
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x2, _ = self.fsmn_block(x1, None)
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x3 = self.affine(x2)
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x4 = self.relu(x3)
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return x4
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def to_kaldi_net(self):
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"""To kaldi net."""
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re_str = ''
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re_str += self.linear.to_kaldi_net()
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re_str += self.fsmn_block.to_kaldi_net()
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re_str += self.affine.to_kaldi_net()
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re_str += self.relu.to_kaldi_net()
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return re_str
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def to_pytorch_net(self, fread):
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"""To pytorch net.
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Args:
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fread: TODO.
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"""
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self.linear.to_pytorch_net(fread)
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self.fsmn_block.to_pytorch_net(fread)
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self.affine.to_pytorch_net(fread)
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self.relu.to_pytorch_net(fread)
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class BasicBlock_export(nn.Module):
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def __init__(
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self,
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model,
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):
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"""Initialize BasicBlock_export.
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Args:
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model: Model instance or model name.
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"""
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super(BasicBlock_export, self).__init__()
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self.linear = model.linear
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self.fsmn_block = model.fsmn_block
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self.affine = model.affine
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self.relu = model.relu
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def forward(self, input: torch.Tensor, in_cache: torch.Tensor):
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"""Forward pass for training.
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Args:
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input: Input audio/text data.
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in_cache: TODO.
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"""
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x = self.linear(input) # B T D
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# cache_layer_name = 'cache_layer_{}'.format(self.stack_layer)
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# if cache_layer_name not in in_cache:
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# in_cache[cache_layer_name] = torch.zeros(x1.shape[0], x1.shape[-1], (self.lorder - 1) * self.lstride, 1)
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x, out_cache = self.fsmn_block(x, in_cache)
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x = self.affine(x)
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x = self.relu(x)
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return x, out_cache
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class FsmnStack(nn.Sequential):
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def __init__(self, *args):
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"""Initialize FsmnStack.
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Args:
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*args: Variable positional arguments.
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"""
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super(FsmnStack, self).__init__(*args)
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def forward(self, input: torch.Tensor, cache: Dict[str, torch.Tensor]):
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"""Forward pass for training.
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Args:
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input: Input audio/text data.
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cache: State cache dict for streaming inference.
|
|
"""
|
|
x = input
|
|
for module in self._modules.values():
|
|
x = module(x, cache)
|
|
return x
|
|
|
|
def to_kaldi_net(self):
|
|
"""To kaldi net."""
|
|
re_str = ''
|
|
for module in self._modules.values():
|
|
re_str += module.to_kaldi_net()
|
|
|
|
return re_str
|
|
|
|
def to_pytorch_net(self, fread):
|
|
"""To pytorch net.
|
|
|
|
Args:
|
|
fread: TODO.
|
|
"""
|
|
for module in self._modules.values():
|
|
module.to_pytorch_net(fread)
|
|
|
|
|
|
"""
|
|
FSMN net for keyword spotting
|
|
input_dim: input dimension
|
|
linear_dim: fsmn input dimensionll
|
|
proj_dim: fsmn projection dimension
|
|
lorder: fsmn left order
|
|
rorder: fsmn right order
|
|
num_syn: output dimension
|
|
fsmn_layers: no. of sequential fsmn layers
|
|
"""
|
|
|
|
|
|
@tables.register("encoder_classes", "FSMNConvert")
|
|
class FSMNConvert(nn.Module):
|
|
def __init__(
|
|
self,
|
|
input_dim: int,
|
|
input_affine_dim: int,
|
|
fsmn_layers: int,
|
|
linear_dim: int,
|
|
proj_dim: int,
|
|
lorder: int,
|
|
rorder: int,
|
|
lstride: int,
|
|
rstride: int,
|
|
output_affine_dim: int,
|
|
output_dim: int,
|
|
use_softmax: bool = True,
|
|
):
|
|
"""Initialize FSMNConvert.
|
|
|
|
Args:
|
|
input_dim: Size/dimension parameter.
|
|
input_affine_dim: Size/dimension parameter.
|
|
fsmn_layers: TODO.
|
|
linear_dim: Size/dimension parameter.
|
|
proj_dim: Size/dimension parameter.
|
|
lorder: TODO.
|
|
rorder: TODO.
|
|
lstride: TODO.
|
|
rstride: TODO.
|
|
output_affine_dim: Size/dimension parameter.
|
|
output_dim: Size/dimension parameter.
|
|
use_softmax: TODO.
|
|
"""
|
|
super().__init__()
|
|
|
|
self.input_dim = input_dim
|
|
self.input_affine_dim = input_affine_dim
|
|
self.fsmn_layers = fsmn_layers
|
|
self.linear_dim = linear_dim
|
|
self.proj_dim = proj_dim
|
|
self.output_affine_dim = output_affine_dim
|
|
self.output_dim = output_dim
|
|
|
|
self.in_linear1 = AffineTransform(input_dim, input_affine_dim)
|
|
self.in_linear2 = AffineTransform(input_affine_dim, linear_dim)
|
|
self.relu = RectifiedLinear(linear_dim, linear_dim)
|
|
self.fsmn = FsmnStack(
|
|
*[
|
|
BasicBlock(linear_dim, proj_dim, lorder, rorder, lstride, rstride, i)
|
|
for i in range(fsmn_layers)
|
|
]
|
|
)
|
|
self.out_linear1 = AffineTransform(linear_dim, output_affine_dim)
|
|
self.out_linear2 = AffineTransform(output_affine_dim, output_dim)
|
|
|
|
self.use_softmax = use_softmax
|
|
if self.use_softmax:
|
|
self.softmax = nn.Softmax(dim=-1)
|
|
|
|
def output_size(self) -> int:
|
|
"""Output size."""
|
|
return self.output_dim
|
|
|
|
def forward(
|
|
self,
|
|
input: torch.Tensor,
|
|
cache: Dict[str, torch.Tensor] = None
|
|
) -> Tuple[torch.Tensor, Dict[str, torch.Tensor]]:
|
|
"""
|
|
Args:
|
|
input (torch.Tensor): Input tensor (B, T, D)
|
|
cache: when cache is not None, the forward is in streaming. The type of cache is a dict, egs,
|
|
{'cache_layer_1': torch.Tensor(B, T1, D)}, T1 is equal to self.lorder. It is {} for the 1st frame
|
|
"""
|
|
|
|
x1 = self.in_linear1(input)
|
|
x2 = self.in_linear2(x1)
|
|
x3 = self.relu(x2)
|
|
x4 = self.fsmn(x3, cache) # self.cache will update automatically in self.fsmn
|
|
x5 = self.out_linear1(x4)
|
|
x6 = self.out_linear2(x5)
|
|
|
|
if self.use_softmax:
|
|
x7 = self.softmax(x6)
|
|
return x7
|
|
|
|
return x6
|
|
|
|
def to_kaldi_net(self):
|
|
"""To kaldi net."""
|
|
re_str = ''
|
|
re_str += '<Nnet>\n'
|
|
re_str += self.in_linear1.to_kaldi_net()
|
|
re_str += self.in_linear2.to_kaldi_net()
|
|
re_str += self.relu.to_kaldi_net()
|
|
|
|
for fsmn in self.fsmn:
|
|
re_str += fsmn.to_kaldi_net()
|
|
|
|
re_str += self.out_linear1.to_kaldi_net()
|
|
re_str += self.out_linear2.to_kaldi_net()
|
|
re_str += '<Softmax> %d %d\n' % (self.output_dim, self.output_dim)
|
|
re_str += '</Nnet>\n'
|
|
|
|
return re_str
|
|
|
|
def to_pytorch_net(self, kaldi_file):
|
|
"""To pytorch net.
|
|
|
|
Args:
|
|
kaldi_file: TODO.
|
|
"""
|
|
with open(kaldi_file, 'r', encoding='utf8') as fread:
|
|
fread = open(kaldi_file, 'r')
|
|
nnet_start_line = fread.readline()
|
|
assert nnet_start_line.strip() == '<Nnet>'
|
|
|
|
self.in_linear1.to_pytorch_net(fread)
|
|
self.in_linear2.to_pytorch_net(fread)
|
|
self.relu.to_pytorch_net(fread)
|
|
|
|
for fsmn in self.fsmn:
|
|
fsmn.to_pytorch_net(fread)
|
|
|
|
self.out_linear1.to_pytorch_net(fread)
|
|
self.out_linear2.to_pytorch_net(fread)
|
|
|
|
softmax_line = fread.readline()
|
|
softmax_split = softmax_line.strip().split()
|
|
assert softmax_split[0].strip() == '<Softmax>'
|
|
assert int(softmax_split[1]) == self.output_dim
|
|
assert int(softmax_split[2]) == self.output_dim
|
|
|
|
nnet_end_line = fread.readline()
|
|
assert nnet_end_line.strip() == '</Nnet>'
|
|
fread.close()
|