Chang-Qing Shu

Title: Innovations by Chang-Qing Shu in Speech Recognition Technology

Introduction

Chang-Qing Shu is a notable inventor based in Orlando, FL, who has made significant contributions to the field of speech recognition technology. With a total of nine patents to his name, Shu has developed innovative methods that enhance the accuracy and efficiency of speech recognition systems. His work is characterized by a deep understanding of phonetics and error measurement in speech recognition.

Latest Patents

One of his latest patents focuses on using word confidence scores, insertion, and substitution thresholds for selected words in speech recognition. This method introduces a system that improves the accuracy of speech recognition by processing word confidence score (WCS) data. The parameters in a decoder are selected to minimize a weighted total error rate, emphasizing the importance of reducing deletion errors more than substitution and insertion errors. The occurrence distribution in WCS varies based on whether a word was correctly identified and the type of error encountered. This information is crucial for determining thresholds in WCS for insertion and substitution errors. By processing the hypothetical word (HYP), a modified hypothetical word (mHYP) is established, which can be set to null, a substituted HYP, or HYP based on the WCS's value in relation to the thresholds.

Another significant patent involves a phonetic distance measurement system and related methods. In this innovation, phonetic distances are empirically measured as a function of speech recognition engine recognition error rates. These error rates are determined by comparing a recognized speech file with a reference file. The phonetic distances can be normalized to earlier measurements, and they can also be utilized to enhance grammar selection in speech recognition engines, aiding in language training and evaluation.

Career Highlights

Chang-Qing Shu has worked with reputable companies such as Adacel Systems, Inc. and Adacel, Inc. His experience in these organizations has allowed him to apply his innovative ideas in practical settings, contributing to advancements in speech recognition technology.

Collaborations

Throughout his career, Shu has collaborated with talented individuals, including Dhananjay Bansal and Nancy Gardner. These collaborations have fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies in the field.

Conclusion

Chang-Qing Shu's contributions to speech recognition technology through his patents and collaborations highlight his role as a leading inventor in this domain. His innovative methods continue to influence the