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End-to-end Spoken Language Understanding with Tree-constrained Pointer Generator. (arXiv:2210.16554v1 [cs.CL])
cs.CL updates on arXiv.org arxiv.org
End-to-end spoken language understanding (SLU) suffers from the long-tail
word problem. This paper exploits contextual biasing, a technique to improve
the speech recognition of rare words, in end-to-end SLU systems. Specifically,
a tree-constrained pointer generator (TCPGen), a powerful and efficient biasing
model component, is studied, which leverages a slot shortlist with
corresponding entities to extract biasing lists. Meanwhile, to bias the SLU
model output slot distribution, a slot probability biasing (SPB) mechanism is
proposed to calculate a slot distribution from …
arxiv generator language spoken language understanding tree understanding