Phrase-Level Class based Language Model for Mandarin Smart Speaker Query Recognition
Table 2: On-line voice search results
['[EMPTY]', '[BOLD] root', '[BOLD] common', '[BOLD] root + common']
The first column records the result of decoding with only root grammar, the second column records the result of decoding with common language model, while the last column stands for the result after interpolating. As clearly observed, we achieve significant performance improvements, approaching a rate of 10%−15% relatively, on in-domain sets, while the performance on out-domain sets decays slightly.