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Hainan Xu

Johns Hopkins University

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Featured researches published by Hainan Xu.

international conference on multimodal interfaces | 2012

Development of the 2012 SJTU HVR system

Hainan Xu; Yuchen Fan; Kai Yu

Haptic voice recognition (HVR) is a multi-modal text entry method for smart mobile devices. It employs haptic events generated by speakers during speaking to achieve better efficiency and robustness for automatic speech recognition. This paper describes the detailed design of the 2012 SJTU submission for the HVR Grand Challenge. During the design, a new perplexity metric using conditional entropy is proposed to evaluate the potential search space reduction of a haptic event without speech input. A number of new haptic events are evaluated both theoretically and experimentally in detail. The final submission system uses the haptic event of initial letter plus final letter and reduces word error rate by 76% compared to the baseline initial letter event.

conference of the international speech communication association | 2015

Pronunciation and silence probability modeling for ASR.

Guoguo Chen; Hainan Xu; Minhua Wu; Daniel Povey; Sanjeev Khudanpur

conference of the international speech communication association | 2015

Modeling phonetic context with non-random forests for speech recognition.

Hainan Xu; Guoguo Chen; Daniel Povey; Sanjeev Khudanpur

international conference on acoustics, speech, and signal processing | 2018

A Pruned RNNLM Lattice-Rescoring Algorithm for Automatic Speech Recognition

Hainan Xu; Tongfei Chen; Dongji Gao; Yiming Wang; Ke Li; Nagendra Goel; Yishay Carmiel; Daniel Povey; Sanjeev Khudanpur

conference of the international speech communication association | 2013

Cluster Adaptive Training With Factorized Decision Trees For Speech Recognition

Kai Yu; Hainan Xu

international conference on acoustics, speech, and signal processing | 2018

Neural Network Language Modeling with Letter-Based Features and Importance Sampling.

Hainan Xu; Ke Li; Yiming Wang; Jian Wang; Shiyin Kang; Xie Chen; Daniel Povey; Sanjeev Khudanpur

conference of the international speech communication association | 2018

Semi-Orthogonal Low-Rank Matrix Factorization for Deep Neural Networks.

Daniel Povey; Gaofeng Cheng; Yiming Wang; Ke Li; Hainan Xu; Mahsa Yarmohammadi; Sanjeev Khudanpur

conference of the international speech communication association | 2017

The Kaldi OpenKWS System: Improving Low Resource Keyword Search.

Jan Trmal; Matthew Wiesner; Vijayaditya Peddinti; Xiaohui Zhang; Pegah Ghahremani; Yiming Wang; Vimal Manohar; Hainan Xu; Daniel Povey; Sanjeev Khudanpur

conference of the international speech communication association | 2018

Recurrent Neural Network Language Model Adaptation for Conversational Speech Recognition.

Ke Li; Hainan Xu; Yiming Wang; Daniel Povey; Sanjeev Khudanpur

conference of the international speech communication association | 2018

Building State-of-the-art Distant Speech Recognition Using the CHiME-4 Challenge with a Setup of Speech Enhancement Baseline.

Szu-Jui Chen; Aswin Shanmugam Subramanian; Hainan Xu; Shinji Watanabe

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Daniel Povey

Johns Hopkins University

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Sanjeev Khudanpur

Johns Hopkins University

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Yiming Wang

Johns Hopkins University

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Guoguo Chen

Johns Hopkins University

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Vijayaditya Peddinti

Johns Hopkins University

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Xiaohui Zhang

Johns Hopkins University

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Kai Yu

Shanghai Jiao Tong University

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Minhua Wu

Johns Hopkins University

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Pegah Ghahremani

Johns Hopkins University

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Tongfei Chen

Johns Hopkins University

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