Youngho Lee is a Senior Consultant
at Cox Associates, a Denver-based applied research and consulting company that
has entered into an exclusive technology development and consulting partnership
with Vissant Technologies. Dr. Lee specializes in wireless and optical network
design and optimization software tools. Dr. Lee oversees and works with Cox
Associates' eleven scientists and mathematicians to develop and apply computer
simulation models, artificial intelligence (AI) data-mining algorithms and
predictive modeling methods, and telecommunications network optimization
software products to improve business and engineering decision-making.
Prior to joining Cox Associates in
2000, Dr. Lee was an Associate Professor since 1997 at Korea University’s
Department of Industrial Engineering. Dr. Lee also served as a Distinguished
Member Technical Staff (DMTS) from 1992 to 1997 at the US WEST Advanced
Technologies, Boulder, CO where he
led and directed several research and development projects. Dr. Lee holds a
Ph.D in Industrial Engineering from Virginia Tech University, and an MS and BS
in Industrial Engineering from Seoul National University.
Dr. Lee has published and
participated in several working papers, conference papers and research papers
in the last ten years. Dr. Lee’s vast works have spanned areas such as
telecommunications, management information systems, service engineering systems
and discrete optimization theory and modeling. Some of Dr. Lee’s most
recent journal references within the last six years are listed below:
EDUCATION
PhD Industrial Engineering Virginia
Tech University (year)
MS Industrial
Engineering Seoul
National Unversity (year)
BS Industrial
Engineering Seoul
National Unversity (year)
AREAS OF EXPERTISE
PROFESSIONAL EXPERIENCE
Associate Professor. Korea
University, Department of Industrial Engineering. 1997-2000.
Distinguished Member Technical
Staff. US
West Advanced Technologies Group. 1992-1997
AWARDS
Koopman Prize, 1996, INFORMS (the Institute for Operations Research and Management
Science.
Circle of Excellence Award, 1995,
US WEST and ORSA (Operations Research Society of America)
Special Achievement Award, 1994,
US WEST
Ph.D. Thesis Award, 1993, IIE (Institute of Industrial
Engineers).
COMPUTER SKILLS
PUBLICATIONS
1.
"A branch and cut algorithm for solving an intra-ring
synchronous optical network design problem," jointly with D. Sherali, J.
Han, S. Kim, Vol. 35, No. 3, pp. 223-232,
Networks, 2000
2.
“A Lagrangian dual-base branch-and-bound algorithm for the
generalized multi-assignment problem,” Y. Lee, J. Park and B. Lim, Management
Science, Vol. 44, No. 12, pp. S271-281, 1998.
3.
“Generating Cuts from Surrogate Constraint Analysis for
Zero-One and Multiple Choice Programming,” Y. Lee, N. Sherali and F. Glover, Computational
Optimization and Applications, Vol. 8, 151-172, 1997.
4.
“Branch and Cut Algorithms for a Steiner Tree-Star Network
Problem,” Y. Lee, Yuping Qiu, and J. Ryan, INFORMS Journal on Computing,
Vol. 8, No. 3, pp. 1-8, 1996.
5.
“A Hub Location Problem in Designing Digital Data Service
Networks,” Y. Lee, J. Park and B. Lim, Location Science, Vol. 4,
No. 3, pp. 185-194, 1996.
6.
“Simulation Modeling for Process Re-engineering in the
Telecommunications Industry,” Y. Lee and A. Elcan, Interfaces,
Vol. 26, No. 3, pp. 1-9, 1996.
7.
“Tighter Representation for Set Partitioning Problems,” Y.
Lee and H. Sherali, Discrete Applied Mathematics, Vol. 68, No. 1,
pp. 153-168, 1996.
8.
“Scheduling Target Illuminators in Naval Battle-Group
Anti-Air Warfare,” Y. Lee, H. Sherali and D. Boyer, Naval Research
Logistics, Vol. 42, No. 5, pp. 737-755, 1995.
9.
“Sequential and Simultaneous Liftings of Minimal Cover
Inequalities for Generalized Upper Bound Constrained Knapsack Polytopes,” Y.
Lee and H. Sherali, SIAM Journal on Discrete Mathematics, Vol. 8,
No. 2, pp. 133-153, 1995.
10.
“A Simultaneous Lifting Strategy for Identifying New Classes
of Facets for the Boolean Quadratic Polytope,” Y. Lee, H. Sherali and W. Adams,
Operations Research Letters, Vol. 17, pp. 19-26, 1995.
11.
“Unrelated Machine Scheduling with Time-Window and
Machine-Downtime Constraints; an Application to a Battle Group Problem,” Y. Lee
and H. Sherali, Annals of Operations Research, Vol. 50, pp.
339-365, 1994.
12.
“Discrete Time Queues with Phase Dependent Arrivals,” Y.
Lee, M.N. Magalhaes and J.N. Daigle, IEEE Transactions on Communications,
Vol. 42, No. 4, pp. 606-614, 1994.
13.
“Strong Formulations and Cutting Planes for Designing
Digital Data Networks,” Y. Lee, L. Lu, Y. Qiu and F. Glover, Telecommunications
Systems, Vol. 2, pp. 261-274, 1994.
14.
"New modeling approaches for the design of local access
transport area networks," Jointly with H. D. Sherali, Lee, T. Park, EJOR, Accepted, 1999.
15.
"A
branch and cut algorithm for solving an intra-ring synchronous optical network
design problem allowing demand splitting," jointly
with H. D. Sherali, J. Cole Smith, Acepted in INFORMS Journal on Computing,
1999.
Some of
recent works on telecommunication systems are listed below:
1.
Y. Lee , Y. Kim, and J. Kim, "A
broadband access network problem in designing mass market multimedia networks," INFORMS
International Meeting, Seoul, S. Korea, June 19-21, 2000.
2.
Y. Lee, J. Han, K. Kang, S. Kim,
"An ATM Switch Capacity Allocation Problem," INFORMS Telecom, Boca Raton, FL,
USA, pp. 122-123, March 5-8, 2000.
3.
Y. Lee and H. Cho, "An optimal
network design and evolution problem of local access networks" 8th International conference on
telecommunication systems: modeling and analysis, Nashville, TN, USA, pp. 114-131, March 9-12, 2000.
4.
Y. Lee, H. D. Sherali, J. Han, S.
Kim, “A branch and cut algorithm for solving an intra-ring synchronous optical network design
problem,” INFORMS National Meeting Cincinnati, 1999, May 2-5 pp.73, USA
5.
Y. Lee, J. Han, S. Kim, “A physical
ring design problem of synchronous optical networks for mass market multimedia
telecommunications,” INFORMS National Meeting Philadelphia, 1999, November 7-10
pp.72, USA
6.
J.C. Smith, H.D. Sherali, and Y.
Lee, "Models and algorithms for SONET design problem," INFORMS
National Meeting Philadelphia, 1999, November 7-10 pp.72, USA
Dr. Lee has also been awarded a US
Patent. A title and description of the patent is listed below:
1. “Method for Assigning Inter-nodal
Traffic Loads to Channels in SONET rings,” 1996.