This is an example CTC decoder written in Python. The code is intended to be a simple example and is not designed to be especially efficient. The algorithm is a prefix beam search for a model trained with the CT
LongTensor([seq_len]) decoder_vocab = [chr(x) for x in range(20000, 20000 + output_dim)] second_time = time.time() decoder = ctcdecode.CTCBeamDecoder(decoder_vocab, beam_width=5, blank_id=0, num_processes=10) pred_seq, scores, _, out_seq_len = decoder.decode(dec_logits, len...
decoder部分,在脑图中的位置 下面开启decoder的部分,也是我目前感觉完全看不明白的部分: >/opt/conda/lib/python3.8/site-packages/nemo/collections/asr/models/ctc_models.py(166)__init__()165importipdb;ipdb.set_trace()-->166self.decoder=EncDecCTCModel.from_config_dict(self._cfg.decoder)167 还是和...
在实际应用中,通过调整BW和C的值,可以在准确性和计算效率之间取得平衡。 CTCDecoder.beam_search这个仓库是对beam search的一个python实现。 上图是我们对不同搜索算法的一个评估。在IAM数据集上解码NN,贪心搜索的字符错误率为5.60%,beam search的字符错误率为5.35%。每个样本的运行时间从12ms增加到56ms。 从上图...
A fast and feature-rich CTC beam search decoder for speech recognition written in Python, providing n-gram (kenlm) language model support similar to PaddlePaddle's decoder, but incorporating many new features such as byte pair encoding and real-time decoding to support models like Nvidia'sConforme...
Connectionist Temporal Classification (CTC) decoding algorithms: best path, prefix search, beam search and token passing. Implemented in Python and OpenCL. - 13476279840/CTCDecoder
这将使你可以很好地理解在TensorFlow中调用ctc_loss或ctc_greedy_decoder等函数时,幕后发生了什么。然而,当你想要自己实现CTC时,你需要了解更多的细节,尤其是想使它运行得更快。Graves等人[1]介绍了CTC运算,并给出了所有相关的数学计算。如果你对如何改进解码感兴趣,请参阅有关beam-search解码的文章。我用Python和...
(raw logits), you either need to pass it through an additionaltorch.nn.functional.softmaxor you can passlog_probs_input=Falseto the decoder. Your output should be BATCHSIZE x N_TIMESTEPS x N_LABELS so you may need to transpose it before passing it to the decoder. Note that if you ...
{LossFunction}Decoder:{Decoder}# ModelName: 模型名/项目名,同时也对应编译后的pb模型文件名# ModelField: 模型处理的数据类型,目前只支持图像 [Image, Text]# ModelScene: 模型处理的场景类型,目前只支持分类场景 [Classification]# - 目前只支持 “图像分类” 这一种场景.Model:ModelName:{ModelName}Model...
飞桨2.0 CTC Decoder 相关API正在迁移中,本节暂时使用ppcuop中API进行解码。 Tips:ppcuop目前有多位PPDE共同维护,可放心使用,支持我们的话希望可以点个Star~ In [ ] from ppcuop.ctc_decoder import CTCDecoder # 实例化推理模型 model = pp.Model(Net(is_infer=True), inputs=input_define) # 加载训练好的...