Information processing device, information processing method, computer program product, and recognition system

M Nagao - US Patent 10,319,373, 2019 - Google Patents
An information processing device includes a phonetic converting unit, an HMM converting
unit, and a searching unit. The phonetic converting unit converts a phonetic symbol …

Compressed finite state transducers for automatic speech recognition

DS Filimonov, G Tiwari, SN Joseph… - US Patent 9,865,254, 2018 - Google Patents
Compact finite state transducers (FSTs) for automatic speech recognition (ASR). An HCLG
FST and/or G FST may be compacted at training time to reduce the size of the FST to be …

Histogram based pre-pruning scheme for active HMMS

OA Bapat - US Patent 9,224,384, 2015 - Google Patents
HMM GEN HISTO-o-, PRUN unit, and a pre-pruning unit. The processing unit is configured
to calculate one or more Hidden Markov Model (HMM) pruning thresholds. The histogram …

Optimization of speech analytics system recognition thresholds for target word identification in a contact center

SK Mammen, PM McDaniel, KH Koster - US Patent 10,891,940, 2021 - Google Patents
An approach for optimizing a confidence score threshold that is used to recognize a target
word (s) in an audio source. A variety of potential instances of the target word can be …