Returns the output label sequence and the corresponding negative log-likelihood estimated by the decoder. """# T表示时间,S表示词表大小T,S=probs.shape# 求概率的对数probs=np.log(probs)# Elements in the beam are (prefix, (p_blank, p_no_blank))# Initialize the beam with the empty sequen...
所谓的线性independent解码,就是指在每个解码的时间步都是独立的,没有attention机制,也不依赖前一个时间步的输出,就是我们最常见的fully connection,输出所有token的概率。 值得一提的是,在CTC算法中,网络的输出是和Decoder的输入,也就是Encoder的输出一一对应的。也就是说,如果Encoder完有N个h向量(对应上图中的h1...
看下pytorch里面给出的例子: root@261d19e4f20a:/workspace/asr/NeMo# more test_ctc.py import torch import torch.nn as nn torch.manual_seed(0) # fix the random seed so that same outputs are ensured T = 5 # input sequence length (wav length) C = 3 # number of classes (vocab size) ...
因为encode(⋅)和decode(⋅)具有典型的RNN框架,解码器可以有选择性地配备一个attention mechanism(注意力机制),已知隐序列H长度为T,解码器二次抽样后,H中路径的时间步长会变为T/s。 编码器:CTC模型的编码器可以是常用Encoder-Decoder模型中的任意一种编码器,如,它可以是多层双响卷积网络。当然,它也有一个限制...
在第一遍中,CTC decoder 以流式模式进行运行。在第二遍中,shared decoder和CTC decoder的输出被使用...
Inputs to CTCBeamDecoder Inputs to the decode method Outputs from the decode method More examples Resources ctcdecode ctcdecode is an implementation of CTC (Connectionist Temporal Classification) beam search decoding for PyTorch. C++ code borrowed liberally from Paddle Paddles'DeepSpeech. It includes swa...
LuluW8071/Automatic-Speech-Recognition-with-PyTorch Star4 End-to-End Automatic Speech Recognition on PyTorch with CTC Decoder and Ken LM pythondeep-neural-networkspytorchcuda-supportkenlmasr-modelcnn-lstm-modelspytorch-lightningctc-decode UpdatedAug 10, 2024 ...
所以说 LSTM + CTC 是编码器 + 解码器,不能算错,但没什么意思。2. 变长序列的端到端学习方法,...
于注意力的编解码器(attentionbasedencoderdecoder,1相关工作 [5-6][7-8] AED)和换能器(transducers)。这些深度学习模型1.1Conformer编码器 易于搭建、调优,在某些应用场景方面的识别率都超过[15] 由Gulati等提出的Conformer对比文献[9]将卷积 [5] 了基于传统语音识别方法的模型,还可以将多个模型和自我注意相结合...
PyTorch, however, has the CTC-blank as first element by default, so you have to move it to the end, or change the default setting List of provided decoders Recommended decoders: best_path: best path (or greedy) decoder, the fastest of all algorithms, however, other decoders often perfor...