Curriculum Vitae

Chai Wah Wu

IBM T. J. Watson Research Center

P. O. Box 218

Yorktown Heights, NY 10598

U. S. A.

Office: 1 (914) 945-1567

E-mail: chaiwahwu@ieee.org

ORCID: http://orcid.org/0000-0002-0657-0683


Research Interests

Digital halftoning algorithms.

Document and multimedia security, digital watermarking and steganography.

Cellular Neural Networks for parallel analog computation and signal processing.

Design and analysis of nonlinear and distributed signal and information processing systems.

Synchronization, consensus and control in complex networks of circuits and systems.

Algebraic graph theory and linear algebra. 

Foundations of nonlinear circuit and system theory.

Logic and machine learning

Education

University of California, Berkeley, CA, USA, Doctor of Philosophy in Electrical Engineering, December 1995.

University of California, Berkeley, CA, USA, Master of Arts in Mathematics, December 1994.

University of California, Berkeley, CA, USA, Master of Science in Electrical Engineering, December 1991.

Lehigh University, Bethlehem, PA, USA, Bachelor of Science in Computer Engineering and Bachelor of Arts in Cognitive Science, June 1990.

Certifications

INFORMS Certified Analytics Professional


Computer Proficiencies

C, FORTRAN, DSP Assembly, MATLAB, Python (including packages such as tensorflow, pytorch, pandas, numpy, scipy, sympy, scikit-learn, scikit-image, streamlit, gmpy2, etc.), Java, BASIC, Pascal, SQL, Unix, Linux, Git, GIS, VBA. 

Experience in writing computer software for data analysis, machine learning, image processing, simulation of dynamical systems and processing of real time signals. 

Research Experience

6/1997-present: Principal Research Scientist, IBM T. J. Watson Research Center, Yorktown Heights, NY, USA 

Developed halftones used in all Ricoh Production Print Solutions' (RPPS) high speed printers today. Project leader of joint Research project with Ricoh Production Print Solutions (formerly IBM Printing Systems Division) on printer-related technologies from 1997 to 2012. 

Other responsibilities during this period include serving as the project leader of the Special Mathematics group and as chairman of department patent evaluation committees.

Recent research topics and projects include: 

9/2012-1/2015: Manager, Numerical Methods group, IBM T. J. Watson Research Center, Yorktown Heights, NY, USA

Lead a team of researchers in the Business Solutions and Mathematical Sciences department to develop innovative technologies for modeling and optimizing components of a smarter planet such as buildings, transportation networks, and power grids.

1/2011-9/2012: Manager, Intelligent Energy Management group, IBM T. J. Watson Research Center, Yorktown Heights, NY, USA

Lead a team of researchers in the Business Analytics and Mathematical Sciences department to develop innovative solutions for energy management in buildings and data centers, intelligent transportation management and high performance image processing for high speed printers.

4/2007-12/2010: Manager, Distributed Digital Media Infrastructure group, IBM T. J. Watson Research Center, Hawthorne, NY, USA

Lead a team of researchers to develop next generation media-aware middleware and multimedia collaboration solutions.

5/2006-3/2007: Technical Staff to VP of Technical Strategy and Worldwide Operations, IBM T. J. Watson Research Center, IBM T. J. Watson Research Center, Yorktown Heights, NY, USA

Part of the staff responsible for coordinating and managing the yearly Global Technology Outlook (GTO) effort in 2006. Responsibilities include setting up meetings, leading discussions, assembling information, creating the GTO documents and giving internal and customer presentations and training sessions.

4/2005-5/2006: Manager, Foundations of Mathematics group, IBM T. J. Watson Research Center, Yorktown Heights, NY, USA

9/1996-6/1997: Mathematical Sciences Postdoctoral Fellow (precursor of IBM Herman Goldstine Memorial Postdoctoral Fellowship for research in mathematical and computer sciences), IBM T. J. Watson Research Center, Yorktown Heights, NY, USA

1/1996-8/1996: Postdoctoral Researcher, University of California, Berkeley, CA, USA.

9/1990-12/1995: Research Assistant, University of California, Berkeley, CA, USA.

Summer 1989: Sherman Fairchild Scholar, Sherman Fairchild Center for Solid-State Studies, Lehigh University, Bethlehem, PA, USA.

Designed a bit-serial systolic array for the calculation of 1-dimensional convolutions with 1-bit gaps between consecutive words.

Summer 1988: NSF Summer Fellow in Sensor Technologies, Moore School of Electrical Engineering, University of Pennsylvania, Philadelphia, PA, USA.

Designed, manufactured and tested the interchip wiring and packaging for a general purpose neural computer.

Teaching and Mentoring Experience

Mentored various summer student interns over the years.

Adjunct Professor, 1. Department of Electronic and Information Engineering, Hong Kong Polytechnic University. 2. Holcombe Department of Electrical and Computer Engineering, Clemson University.

August 5-14, 2015: University of Minnesota, Minneapolis, MN, USA. Industry mentor at Mathematical Modeling Workshop. Mentor a team of graduate students in solving an industrial research problem. 

August 3-12, 2011: University of Minnesota, Minneapolis, MN, USA. Industry mentor at Mathematical Modeling Workshop. Mentor a team of graduate students in solving an industrial research problem.

August 6-15, 2008: University of Minnesota, Minneapolis, MN, USA. Industry mentor at Mathematical Modeling Workshop. Mentor a team of graduate students in solving an industrial research problem.

August 9-18, 2006: University of Minnesota, Minneapolis, MN, USA. Industry mentor at Mathematical Modeling Workshop. Mentor a team of graduate students in solving an industrial research problem.

August 1-10, 2005: University of Minnesota, Minneapolis, MN, USA. Industry mentor at Mathematical Modeling Workshop. Mentor a team of graduate students in solving an industrial research problem.

2005: Member of Ph.D. committee, New Jersey Institute of Technology.

Spring 1998: Columbia University, New York, NY, USA. Taught a graduate course on nonlinear dynamics in science and engineering with Charles Tresser. Partly responsible for preparing the lecture notes used in the class.

Spring 1997: City University of New York, New York, NY, USA. Taught a graduate course on nonlinear dynamics in science and engineering in the Mathematics Department with Charles Tresser. Partly responsible for preparing the lecture notes used in the class.

1/1996-8/1996: Postdoctoral Researcher, University of California, Berkeley, CA, USA. Part of my responsibilities include the supervision of visiting scholars and students. During this time, I have also supervised two graduate students in the Mathematics department at UC Berkeley with Prof. Charles Pugh.

9/1990-12/1995: Research Assistant, University of California, Berkeley, CA, USA.

Supervised several undergraduate students, visiting scholars and postdoctoral scholars in various research projects.

8/1994-12/1994: Head teaching assistant, Department of Electrical Engineering, University of California, Berkeley, CA, USA.

Led weekly discussion section, wrote up homework solutions, designed and organized two term projects, designed and wrote part of the computer software used in the term projects, and handled all administrative details for a senior level class on linear and nonlinear circuit theory.

8/1993-12/1993: Head teaching assistant, Department of Electrical Engineering, University of California, Berkeley, CA, USA.

Led weekly discussion section, wrote up homework solutions, prepare quizzes, designed and organized a term project, and handled all administrative details for a junior level class on linear and non-linear circuit theory of over 60 students.

8/1989-12/1989: Tutor, Challenge for Success program, Lehigh University, Bethlehem, PA, USA.

8/1988-12/1988: Teaching Apprentice, Department of Mathematics, Lehigh University, Bethlehem, PA, USA.

Conducted two lectures, and assisted in making up the quizzes and final exam for a course in discrete mathematics.

Other Employment

6/1992-8/1996: Laboratory Manager of Nonlinear Electronics Laboratory, University of California, Berkeley, CA, USA.

Responsible for all aspects of operations in the Nonlinear Electronics Laboratory, including computer hardware and software support and equipment purchase.

1/1989-5/1989: Computer Programmer, Advanced Technology for Large Structural Systems (ATLSS), Lehigh University, Bethlehem, PA, USA.

Programmed part of the graphical interface of the Bridge Fatigue Investigator, an expert system for evaluating bridges developed at Lehigh University.

Experience in attracting funding and managing funded projects

Project leader of USDOT funded 3-year joint Smarter Travel Research Project with City of Dubuque. The goal of this project is to develop an end-to-end integrated system for travel data acquisition, analytics and transit route optimization. This project has been awarded a 2017 NADO Excellence in Regional Transportation Award.

Project leader of joint Research project with Ricoh Production Print Solutions (formerly IBM Printing Systems Division) on printer-related technologies from 1997 to 2012. This project has been funded internally and externally for over 10 years. I was responsible for drafting the project proposal, leading the research teams to deliver on the work items and reporting on the results.

IBM FOAK (First-of-a-kind) project with an utility company. Obtained funding for a joint project to develop algorithms to detect high impedance faults in power lines.

Awards and Honors

IEEE Region 1 Technological Innovation Award, 2013.

IBM Research Technical Accomplishment, 2005, 2009, 2013, 2017. 

IBM Outstanding Research Accomplishment Award, 2013, 2017.

IBM Research Supplemental Outstanding Technical Achievement Award, 2003.

IBM Research Outstanding Technical Achievement Award, 2001. 

IBM Invention Development Team Award, 2015, 2019, 2020.

Elected Fellow of Institute of Electrical and Electronics Engineers (IEEE) in 2001 at age 32.

Fellow, Asia-Pacific Artificial Intelligence Association (AAIA).

Josephine de Karman Fellowship 1993.

George C. and Helen N. Pardee Scholarship 1990.

William L. Everitt Award 1990.

Tau Beta Pi Lehigh University's chapter's prize 1987.

Member of honor societies Phi Eta Sigma, Phi Beta Kappa, and Eta Kappa Nu.

Professional Activities

Board of Governors, IEEE Circuits and Systems Society, 2010-2011.

General co-chair, IEEE International Workshop on Cellular Nanoscale Networks and Applications, 2010, 2012.

IEEE Educational Activities Board ABET Program Evaluator, 2006-present.

ABET EAC Commissioner 2018-present.

Webmaster/Social Media, IEEE Mid-Hudson section, 2011-present.

Publicity Chair, IEEE Mid-Hudson section, 2013-present.

Guest Associate Editor, International Journal of Bifurcation and Chaos, 2010-present.

Senior Editorial Board Member, IEEE Journal on Emerging and Selected Topics in Circuits and Systems, 2014-2015, 2022-2023. 

Editor-in-Chief, IEEE Circuits and Systems Magazine, 2016-2019. 

Deputy Editor-in-Chief, IEEE Circuits and Systems Magazine, 2014-2015.

Associate Editor, IEICE NOLTA journal, 2009-present.

Associate Editor of IEEE Transactions on Circuits and Systems, Part I, 1997-1999, 2002-2003, Part II, 2004-2005, Part I, 2006-2007.

IEEE Circuits and Systems Society Distinguished Lecturer, 2006-2007.

Organizing Committee Chair, AMS Special Session on Mathematics Through the Informational Lens, Joint Mathematics Meetings, 2022.

Organizing Committee Chair, First IBM Research Workshop on the Informational Lens, 2020.

Organizing Committee Member, IMA workshop on Optimal Control, Optimal Transport, and Data Science, 2020.

Program Committee Member, AAAI-19.

Organizing Committee Member, SIAM 2013 Annual Meeting.

Organizing Committee Member, 9th International Workshop on Complex Systems and Networks.

Organizing Committee Member, IMA Hot Topics Workshop: Mathematical and Computational Challenges in the Control, Optimization, and Design of Energy-Efficient Buildings, June 11-14, 2013.

Technical Program Committee, 2003 IEEE International Conference on Multimedia and Expo, First International Workshop on Nonlinear Dynamics and Synchronization (INDS'08).

Review Committee Member, IEEE International Symposium on Circuits and Systems, 2001, 2004, 2006, 2008, 2009, 2010, 2011, 2012, 2013.

Session Chair, IS&T's NIP: International Conference on Digital Printing Technologies, 2001, 2004, 2006, 2007, 2008.

Session Chair, IEEE International Symposium on Circuits and Systems, 2002, 2004, 2005, 2010, 2011, 2012, 2013.

Track Chair, IEEE International Symposium on Circuits and Systems, 2011.

Member, IEEE CAS Technical Committee on Nonlinear Circuits and Systems.

Member, IEEE CAS Technical Committee on Cellular Nanoscale Networks and Array Computing. (Chairman: 2009-2010)

Member, IEEE CAS Technical Committee on Sensory Systems.

Member, IEEE CAS Technical Committee on Multimedia Systems and Applications. 

Member-at-Large, IEEE CEAA, 2016-2017.

Member of NSF CAREER Panel, 2002, NSF Theoretical Foundations Panel, 2006, NSF STC Panel 2011.

Digital Media Judge, Imagine Cup 2010 Finals.

Moody's Mega Math Challenge Judge, 2011-2016. 

Contributor to Online Encyclopedia of Integer Sequences and Sympy development

IBM Smarter Cities Challenge, Baton Rouge, Louisiana 2014.

Reviewed papers for: 1) IEEE transactions on circuit and systems parts I and II, 2) IEEE transactions on industrial electronics, 3) International journal of circuit theory and applications, 4) International journal of bifurcation and chaos, 5) Journal of Circuits, Systems, and Computers, 6) Journal of Electronic Imaging, 7) Journal of the Franklin Institute, 8) Nonlinearity, 9) Physical Review Letters, 10) Physical Review E. 11) Physica A. 12) Discrete Mathematics

Member of

Published Computer Software

Issued Patents: 78

Patents on Computing

Patents on Digital halftoning, image processing and printing technology

Patents on Digital watermarking and multimedia security

Patents on Security and privacy

Patents on various other topics

Invited Lectures, Workshop Presentations and Keynote Talks

Publications: number of citations > 13900, h-index = 53, i10-index = 142 (Google Scholar)

Publications on computing and algorithms

Publications on machine learning and artificial intelligence

Publications on quantum computing

Publications on linear algebra and algebraic graph theory

Publications on combinatorics, number theory, geometry and analysis

Publications on Cellular Neural Networks

Publications on digital halftoning and image processing

Publications on digital watermarking and steganography

Publications on sensor placement

Publications on peer-to-peer data distribution

Publications on control, synchronization, consensus and dynamics in networks of coupled systems

Publications on autonomic computing and decentralized optimization

Publications on chaotic and nonlinear dynamics

Publications on circuit tuning and circuit theory

Publications on privacy preserving data mining

Publications on 3D visualization of medical data

Books and Monographs