Title
Investigation of transfer learning for ASR using LF-MMI trained neural networks
Abstract
It is common in applications of ASR to have a large amount of data out-of-domain to the test data and a smaller amount of in-domain data similar to the test data. In this paper, we investigate different ways to utilize this out-of-domain data to improve ASR models based on Lattice-free MMI (LF-MMI). In particular, we experiment with multi-task training using a network with shared hidden layers; and we try various ways of adapting previously trained models to a new domain. Both types of methods are effective in reducing the WER versus in-domain models, with the jointly trained models generally giving more improvement.
Year
DOI
Venue
2017
10.1109/ASRU.2017.8268947
2017 IEEE Automatic Speech Recognition and Understanding Workshop (ASRU)
Keywords
DocType
ISBN
Transfer learning,weight transfer,LF-MMI,multi-task learning,Automatic Speech Recognition
Conference
978-1-5090-4789-5
Citations 
PageRank 
References 
5
0.51
0
Authors
5
Name
Order
Citations
PageRank
Pegah Ghahremani1997.09
Vimal Manohar2547.99
Hossein Hadian3113.31
Daniel Povey42442231.75
Sanjeev Khudanpur52155202.00