An empirical analysis of word error rate and keyword error rate
Youngja H. Park, Siddharth Patwardhan, Karthik Visweswariah, Stephen C. Gates · 2008
This paper studies the relationship between word error rate (WER) and keyword error rate (KER) in speech transcripts and their effect on the performance of speech analytics applications. Automatic speech recognition (ASR) systems are increasingly used as input for speech analytics, which raises the question of whether WER or KER is the more suitable performance metric for calibrating the ASR system. ASR systems are typically evaluated in terms of WER. Many speech analytics applications,