[Question] about Speech Data Explorer (SDE) Tool
Hi,
The Speech Data Explorer (SDE) tool is really a great tool for error analysis. I have some questions about it:
1- What is `Vocabulary size` exactly mean in SDE? Is it unique words separated by space in the manifest? (because when I have tested SDE with QuartzNet & Citrinet (with bpe tokenizer) models its vocabulary size have been changed!!)  
2- What does `Score` means in SDE? 
3- In the last plot of SDE (_e.g._, the last plot in `statistics` section of  http://18.223.252.228:8050/) what does `sometimes recognized` exactly means? It means these words recognition accuracy is greater than zero and less than 100%?
4- How one can save or export tables in SDE for example as a csv file (excel file)? Also if one can save them after applying a filter it would be great. 
5- After running the SDE for a manifest according to the predicted results of an ASR model, is there any systematic approach for analyzing and detecting the common errors of the ASR model and address them? In other words, how one can improve the accuracy of an ASR model by using the SDE tool? Is there any paper/tutorial in this area? 
Best 