LibriSpeechSegTupleWavDataset neighbor has bug?

[ArtemisZGL]

neighbors = self.neighbor_prefixes[prefix]
neighbors.remove(uttname)

I found the code in getitem function in LibriSpeechSegTupleWavDataset just remove the uttname in the neighbors, and it will remove it in the self.neighbor_prefixes as well, and finally the neighbors is zero. I dont know it's a bug or you design it on purpose.

Besides, I found the code unsupervised_data_cfg_librispeech.py process the speaker is strange, if the valid or test split have the same speaker, it's not included in both "data_cfg['speakers']" and "data_cfg['valid']['speakers']", but the valid set comes from the training scp, which means they will have the same speaker, and finally the "data_cfg['valid']['speakers']" is empty.