I-Fan Chen (陳羿帆)

I am a PhD candidate working under the direction of Prof. Chin-Hui Lee in the School of ECE at Georgia Institute of Technology. I have received my MS and BS degrees in communication engineering and electrical engineering areas from National Taiwan University. [Resume]

Research Interest:

Spoken keyword search, large vocabulary continuous speech recognition, speaker diarization, system combination, detection-based ASR

Programming languages:

Most commonly used: C++, perl, bash, awk, matlab

Others: Java, C, python, VB, PHP, MySQL


Taekwondo (third-degree black belt), badminton, softball

Contact: ifanchen AT gmail DOT com


  • Graduate Research Assistant in Georgia Tech - 2010 ~ 2015

  • Microsoft Research Intern - 2012

  • Research Assistant in Research Center for Information Technology Innovation, Academia Sinica - 2007~2010

Publication List [Google Scholar Page]


  • Ting-Wei Wu, I-fan Chen, Ankur Gandhe, "Learning to rank with BERT-based confidence models in ASR rescoring," in Proc. Interspeech, 2022.[PDF]


  • Tze Siong Lau, I-Fan Chen, Chin-Hui Lee, "Tunable Keyword-Aware Language Modeling and Context Dependent Fillers for LVCSR-based Spoken Keyword Search," in Proc. Interspeech, 2015. [PDF]

  • I-Fan Chen, Chongjia Ni, Boon Pang Lim, Nancy F. Chen, and Chin-Hui Lee, "A Keyword-Aware Language Modeling to Spoken Keyword Search," in Journal of Signal Processing Systems, 2015, DOI: 10.1007/s11265-015-0998-0 . [PDF1]

  • I-Fan Chen, Chongjia Ni, Boon Pang Lim, Nancy F. Chen, and Chin-Hui Lee, "A KEYWORD-AWARE GRAMMAR FRAMEWORK FOR LVCSR-BASED SPOKEN KEYWORD SEARCH," in Proc. ICASSP, 2015. [PDF1] [Slide]

  • Nancy Chen, Chongjia Ni, I-Fan Chen, Sunil Sivadas, Van Tung Pham, Haihua Xu, Xiong Xiao, Tze Siong Lau, Sujun Leow, Boon Pang Lim, Cheung-Chi Leung, Lei Wang, Chin-Hui Lee, Alvina Goh, Eng Siong Chng, Bin Ma, Haizhou Li, "LOW-RESOURCE KEYWORD SEARCH STRATEGIES FOR TAMIL," in Proc. ICASSP, 2015. [PDF1]


  • Van Tung Pham, Nancy F. Chen, Sunil Sivadas, Haihua Xu, I-Fan Chen, Chongjia Ni, Eng Siong Chng, Haizhou Li, "SYSTEM AND KEYWORD DEPENDENT FUSION FOR SPOKEN TERM DETECTION," in Proc. IEEE SLT, 2014.

  • I-Fan Chen, Nancy F. Chen, and Chin-Hui Lee, "A Keyword-Boosted sMBR Criterion to Enhance Keyword Search Performance in Deep Neural Network Based Acoustic Modeling," in Proc. Interspeech, 2014. [PDF1] [PDF2] [Slides]

  • Zhen Huang, Jinyu Li, Sabato Marco Siniscalchi, I-Fan Chen, Chao Weng, and Chin-Hui Lee, "Feature Space Maximum A Posteriori Linear Regression for Adaptation of Deep Neural Networks," in Proc. Interspeech, 2014. [PDF]

  • I-Fan Chen, Chongjia Ni, Boon Pang Lim, Nancy F. Chen, and Chin-Hui Lee, "A Novel Keyword+LVCSR-Filler Based Grammar Network Representation for Spoken Keyword Search," in Proc. ISCSLP, 2014. [PDF1] [PDF2] [Slides] [nominee of best student award]

  • I-Fan Chen, Sabato Marco Siniscalchi, and Chin-Hui Lee, "ATTRIBUTE BASED LATTICE RESCORING IN SPONTANEOUS SPEECH RECOGNITION," in Proc. ICASSP, 2014. [PDF1][PDF2]


  • I.-F. Chen, S. M. Marco, S. Moon, D. Shin, M.-W. Koo, M. Chung, and C.-H. Lee, "An Experimental Study on Structural-MAP Approaches to Implementing Very Large Vocabulary Speech Recognition Systems for Real-World Tasks," in APSIPA2013. [PDF1] [PDF2]

  • I.-F. Chen and C.-H. Lee, "A Hybrid HMM/DNN Approach to Keyword Spotting of Short," in Proc. Interspeech, 2013. [PDF1] [PDF2]

  • I.-F. Chen and C.-H. Lee, "A Resource-Dependent Approach to Word Modeling for Keyword Spotting, " in Proc. Interspeech, 2013. [PDF1] [PDF2]


  • I.-F. Chen and C.-H. Lee, "A Study on Using Word-Level HMMs to Improve ASR Performance over State-of-the-Art Phone-Level Acoustic Modeling for LVCSR," in Proc. Interspeech, 2012. [PDF1] [PDF2]


  • I.-F. Chen, S.-S. Cheng, and H.-M. Wang, "Phonetic subspace mixture model for speaker diarization," in Proc. Interspeech, 2010. [PDF1] [PDF2]

  • S.-S. Cheng, I.-F. Chen, and H.-M. Wang, "Bayesian Speaker Recognition Using Gaussian Mixture Model and Laplace Approximation," in Proc. Interspeech, 2010. [PDF1] [PDF2]


  • I.-F. Chen and H.-M. Wang, "Articulatory feature asynchrony analysis and compensation in detection-based ASR," in Proc. Interspeech, 2009. [PDF1] [PDF2]


  • I.-F. Chen and H.-M. Wang, "An Investigation of Phonological Feature Systems Used In Detection-Based ASR," in Proc. ISCSLP'08, 2008. [PDF1] [PDF2]


  • I.-F Chen and L.-S. Lee, "A new framework for system combination based on integrated hypothesis space," in Proc. Interspeech, 2006. [PDF1] [PDF2]