Restoring punctuation and capitalization in transcribed speech

Adding punctuation and capitalization greatly improves the readability of automatic speech transcripts. We discuss an approach for performing both tasks in a single pass using a purely text-based n-gram language model. We study the effect on performance of varying the n-gram order (from n = 3 to n = 6) and the amount of training data (from 58 million to 55 billion tokens). Our results show that using larger training data sets consistently improves performance, while increasing the n-gram order does not help nearly as much.

• Type: Conference
• Year: 2009
• Where: ICASSP
• Authors: Agustín Gravano, Martin Jansche, Michiel Bacchiani
• Keywords: Automatic Speech Transcripts, ICASSP 2009, N-gram Order, Signal Processing, Text-based N-gram Language