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Dr. David Raz
Faculty of Industrial Engineering and Technology Management
Tel: 03-5026829
Email: davidra@hit.ac.il
Building 1, 6th Floor, Room 617
About
Dr. David Raz is a lecturer and researcher in the operations research and logistics areas. He owns a B.Sc. (cum laude) and a M.Sc. in Electrical Engineering from the Technion, Israel Institute of Technology, MBA (with excellence) from the College of Management Academic Studies Division, Rishon-Le-Zion, and a Ph.D. in Computer Science from Tel-Aviv University.
David heads the M.Sc studies program in logistics and system engineering in Management of Technology. In his research and teaching he combines his background in electrical engineering, computers and communication, his experience in the hi-tech industry, and his constant and continuing connection with the industry.
Education
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1988 to 1992, B.Sc. in Electrical Engineering
Technion - Israel Institute of Technology, Haifa, Israel -
1996 to 1997, M.Sc. in Electrical Engineering
Technion - Israel Institute of Technology, Haifa, Israel -
2003 to 2004, MAB in Hi-tech Management
The College of Management Academic Studies Division, Rishon-Le-Zion, Israel -
2003 to 2008, Ph.D. in Computer Science
Tel-Aviv University, Tel-Aviv, Israel
Positions and Employment
| Period (dates) | Name of Institution (city, country) | Department | Rank/Function |
|
1992-1998 |
The Israeli Navy | Developer, Integrator, Product Team Leader | |
|
1998-1999 |
Conduct, Tel-Aviv, Israel | Research and Development |
Software Team Leader |
|
1999-2002 |
Mercury Interactive, Yehud, Israel | Research and Development | Senior Manager , Director |
|
2003-2007 |
The College of Management Rishon-Le-Zion | Business Administraiton | Teaching Assistant, Lecturer |
|
2003-2006 |
Tel-Aviv University, Tel-Aviv, Israel | School of Computer Science | Teaching Assistant |
|
10/2007 - present |
Holon Institute of Technology HIT, Israel | Management of Technology | Lecturer |
|
10/2012 - present |
Holon Institute of Technology HIT, Israel | Management of Technology | Head – M.Sc. Studies, Management of Technology |
Research Interests
Dr. David Raz research focuses on different subjects in the field of logistics and operations research.
Queueing Theory:
Logistics:
Water pumps electricity cost optimization:
Ad-hoc Networks:
Dr. David Raz research focuses on different subjects in the field of logistics and operations research.
Queueing Theory:
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Finding quantitative measures for fairness, predictability and other "second degree" phenomena of queues.
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Using Fuzzy Control ideas in queueing to capture "soft" concepts such as fairness, with small efficiency degradation.
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Performance of queueing regimes and policies under inexact and missing information e.g. the performance of the Shortest Queue policies when queue lengths are unknown or inexact, the performance of "Shortest Customer" policy when customer sizes are inexact or missing.
Logistics:
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Novel ideas for optimizing specific packing problems, specifically a pseudo-efficient frontier method for solving two-phase packing problems.
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Practical uses of the Vehicle Routing Problem (VRP) e.g. convoy routing, routing with outsourcing and optional customers.
Water pumps electricity cost optimization:
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Modeling large scale Water Supply Systems (WSS) in a manner which can be directly solved.
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Handling water supply operational constraints in a computationally efficient manner.
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Addressing complex cost structures in water systems e.g. electricity quotas, fines and ex-post costs.
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Taking into account the stochastic knowledge of demand when optimizing electricity costs with fines.
Ad-hoc Networks:
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Studying the performance of on-demand routing algorithms in ad-hoc networks over time, the idea being to propose an optimal protocol for tasks which have a connectivity requirement and a time horizon, as opposed to current trends which ignore these.
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Studying the effect of the terrain type on the performance of such protocols, with the expectation that some protocols will be more efficient on rural terrains as opposed to urban terrains.
Teaching
| Year | Name of Course | Institution/Position |
| 2003-2006 |
|
The College of Management, Rishon-le-Zion, Israel/Lecturer |
| 2003-2006 |
|
Tel-Aviv University, Tel-Aviv, Israel/Teaching Assistant |
| 2007-present |
|
HIT – Holon Institute of Technology/Lecturer |
Publication
Refereed articles (published)
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D. Raz, H. Levy, B. Avi-Itzhak
A resource-allocation queueing fairness measure
ACM SIGMETRICS Performance Evaluation Review, 32(1), 2004 (130-141)
[Proc. SIGMETRICS 2004/Performance 2004 Joint Int'l. Conf. on Measurement and Modeling of Computer Systems, New York, USA, 12-16 June 2004] -
D. Raz, B. Avi-Itzhak, H. Levy
How fair is queue prioritization?
ACM Sigmetrics Performance Evaluation Review, 32(2), 2004 (14-16)
[Special Issue: The Sixth Workshop on MAthematical performance Modeling and Analysis (MAMA 2004)] -
D. Raz, B. Avi-Itzhak, H. Levy
Fair operation of multi-server and multi-queue systems
ACM SIGMETRICS Performance Evaluation Review, 33(1), 2005 (382-383)
[Proc. 2005 ACM SIGMETRICS Int'l. Conf. on Measurement and Modeling of Computer Systems (ACM SIGMETRICS '05) Banff, Alberta, Canada, 6-10 June 2005] -
D. Raz, B. Avi-Itzhak, H. Levy
Locality of reference and the use of sojourn time variance
for measuring queue unfairness
ACM Sigmetrics Performance Evaluation Review, 33(2), 2005 (39-41)
[Special Issue: The Seventh Workshop on MAthematical performance Modeling
and Analysis (MAMA 2005)] -
D. Raz, B. Avi-Itzhak, H. Levy
On the twin measure and system predictability and fairness
ACM Sigmetrics Performance Evaluation Review, 34(3), 2006 (15-17)
[Special Issue: The Eighth Workshop on MAthematical performance Modeling
and Analysis (MAMA 2006)] -
D. Raz, B. Avi-Itzhak, H. Levy
Locality of reference and the use of sojourn time variance for measuring queue fairness
Operations Research Letters, 35(3), 2007 (311-318) -
B. Avi-Itzhak, H. Levy, D. Raz
A resource allocation queueing fairness measure: Properties and bounds
Queueing Systems, 56, 2007 (65-71) -
B. Avi-Itzhak, H. Levy, D. Raz
Quantifying fairness in queuing systems
J. Probability in the Engineering and Informational Sciences, 22(4), 2008 (495-517) -
D. Raz, H. Levy, B. Avi-Itzhak
On the twin measure and queueing systems predictability
Performance Evaluation 65(11-12), 2008 (839-853) -
D. Raz, H. Levy, B. Avi-Itzhak
Class prioritization and server dedication in queueing systems: Discrimination and fairness aspects
Performance Evaluation 67(4), 2010 (235-247) -
H. Levy, B. Avi-Itzhak, D. Raz
Principles of fairness quantification in queueing systems
Network Performance Engineering: A Handbook on Convergent Multi-Service
Networks and Next Generation Internet (D.D. Kouvatsos ed.)
Lecture Notes in Computer Science, 5233, 2011 (284-300)
Papers Presented at Scientific Meetings Published in Proceedings
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D. Raz, H. Levy, B. Avi-Itzhak
A resource-allocation queueing fairness measure
Proc. SIGMETRICS 2004/Performance 2004 Joint Int'l. Conf. on Measurement and Modeling of Computer Systems, New York, USA, 12-16 June 2004 -
H. Levy, B. Avi-Itzhak, D. Raz
Principles of fairness quantification in queueing systems: A tutorial
Proc. 2nd Int'l. Working Conf. on Performance Modeling and Evaluation of
Heterogeneous Networks, HET-NETs '04
Ilkley, West Yorkshire, U.K., 26-28 July 2004 -
D. Raz, B. Avi-Itzhak, H. Levy
Fair operation of multi-server and multi-queue systems
ACM SIGMETRICS '05, Banff, Alberta, Canada, 6-10 June 2005 [poster] -
M. Herzberg, D. Raz
Resource assignment in multi-service survivable networks
based on the cycle-oriented approach
Proc. 19th Int'l. Teletraffic Congress ITC19
X.J. Liang, Z.H. Xin, V.B. Iversen, G.S. Kuo (eds.)
Beijing, China, 29 Aug.-2 Sept. 2005 (1621-1630) -
D. Raz, B. Avi-Itzhak, H. Levy
Fairness considerations of scheduling in multi-server and multi-queue systems
Proc. 1st Int'l. Conf. on Performance Evaluation and Tools (VALUETOOLS '06)
Pisa, Italy, 11-13 October 2006 -
D. Raz, H. Levy, B. Avi-Itzhak
The twin measure for queueing system predictability
Proc. 2nd Int'l. Conf. on Performance Evaluation Methodologies and Tools (VALUETOOLS '07)
Nantes, France, 23-25 October 2007 -
D. Raz, H. Levy, B. Avi-Itzhak
Class treatment in queueing systems: Discrimination and fairness aspects
Proc. Valuetools Third Int'l. Conf. on Performance Evaluation Methodologies and Tools
Athens, Greece, 20-24 October 2008 -
D. Raz, A. Sadeh
An efficient mechanism for solving two phase packing problems
Proc. 24th European Conf. on Operational Research (EURO XXIV)
Lisbon, Portugal, 11-14 July 2010 -
D. Raz
Practical approaches to the frequency assignment problem in land military communication networks
Proc. 19th Triennial Conf. of the Int'l. Federation of Operational Research Societies (IFORS2011)
Melbourne, Australia, 10-15 July 2011 [abstract] -
D. Raz, A. Sadeh
A pseudo-efficient frontier method for solving two-phase packing problems
Proc. Int'l. Conf. on Industrial Engineering and Engineering Management (IEEM2001)
Singapore, 6-9 December 2011 (181-184) -
D. Raz, S. Levy
A study of the connectivity over time behavior of on-demand ad hoc path selection schemes
Electronic Notes in Discrete Mathematics, 41, 2013 (101-108)
[Proc. Int'l. Network Optimization Conf. (INOC 2013)
Tenerife, Spain, 20-22 May 2013] -
D. Raz, A. Daliot
A practical approach for large scale optimal pump scheduling with operational constraints
Operations Research Society of Israel (ORSIS) Annual Meeting 2014
Tel-Aviv, Israel, 22-23 April 2014 [abstract] -
D. Raz, A. Daliot
A practical approach for large scale optimal pump scheduling with operational constraints
20th Conf. of the Int'l. Federation of Operational Research Societies (IFORS 2014): The Art of Modeling
Barcelona, Spain, 13-18 July 2014 [abstract]
patents
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S. Azulai, R. Levy, Y. Cohen, A. Haiut, A. Stroh, D. Raz
Automatic network traffic analysis
U.S. Patent No. 6137782, Publication Date: 10/24/2000 -
S. Azulai, R. Levy, Y. Cohen, A. Haiut, A. Stroh, D. Raz
Automatic network topology analysis
U.S. Patent No. 6205122, Publication Date: 03/20/2001
Abstracts - Reviewed
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D. Raz, B. Avi-Itzhak, H. Levy
How fair is queue prioritization?
ACM Sigmetrics Performance Evaluation Review
Special Issue: The Sixth Workshop on MAthematical performance Modeling and Analysis (MAMA 2004), 32(2), 2004 (14-16) [extended abstract] -
B. Avi-Itzhak, H. Levy, D. Raz
Quantifying fairness in queueing systems
12th INFORMS/APS Conf. – Institute for Operations Research and the Management Sciences/Applied Probability Society
Beijing, China, 23-25 June 2004 -
D. Raz, B. Avi-Itzhak, H. Levy
Locality of reference and the use of sojourn time variance
for measuring queue unfairness
ACM Sigmetrics Performance Evaluation Review
Special Issue: The Seventh Workshop on MAthematical performance Modeling and Analysis (MAMA 2005), 33(2), 2005 (39-41) [extended abstract] -
D. Raz, B. Avi-Itzhak, H. Levy
On the twin measure and system predictability and fairness
ACM Sigmetrics Performance Evaluation Review
Special Issue: The Eighth Workshop on MAthematical performance Modeling and Analysis (MAMA 2006), 34(3), 2006 (15-17) [extended abstract] -
Y. Cohen, A. Sadeh, D. Raz
From Node Routing to Arc Routing: Utilizing the Chinese Postman Problem for Heuristically Solving the TSP
Operations Research Society of Israel (ORSIS) Conf. 2008
Shefayim, Israel, 18-19 May 2008 -
A. Sadeh, D. Raz
An efficient mechanism for solving special cases of set covering problems
Operations Research Society of Israel Annual Meeting 2009 – ORSIS
Herzeliya, Israel, 10-11 May 2009 -
D. Raz, A. Sadeh
An efficient mechanism for solving two phase packing problems
24th European Conf. on Operational Research (EURO XXIV)
Lisbon, Portugal, 11-14 July 2010 -
D. Raz
Practical approaches to the frequency assignment problem in land military communication networks
Proc. 19th Triennial Conf. of the Int'l. Federation of Operational Research Societies (IFORS2011)
Melbourne, Australia, 10-15 July 2011 -
D. Raz, A. Daliot
A practical approach for large scale optimal pump scheduling with
operational constraints
Annual Conf. of Operations Research Society of Israel (ORSIS 2014)
Tel-Aviv, Israel, 22-23 April 2014 -
D. Raz, A. Daliot
A practical approach for large scale optimal pump scheduling with
operational constraints
Proc. 20th Conf. of the Int'l. Federation of Operational Research Societies (IFORS 2014):
The Art of Modeling
Barcelona, Spain, 13-18 July 2014 -
D. Raz, A. Daliot
A generic modeling language for water supply systems optimization
Annual Conf. of Operations Research Society of Israel (ORSIS 2015)
Haifa, Israel, 10-11 May 2015 -
D. Raz, A. Daliot
Towards a generic modeling language for water-supply systems
27th European Conf. on Operational Research (EURO 2015)
Glasgow, Scotland, 12-15 July 2015 (187-188) -
D. Raz, A. Sadeh, M. Avitan
A study of the practicality of the pseudo-efficient frontier method for
solving two-phase packing problems
The 29th Conf. of the European Chapter on Combinatorial Optimization (ECCO 2016)
Budapest, Hungary, 26-28 May 2016 (page 23) -
D. Raz, A. Aminov
The effects of inaccurate job-size information on size-based queueing policies –
The single-server case
Annual Conf. of Operations Research Society of Israel (ORSIS 2016)
Maale Hahamisha, Israel, 29-30 May 2016
RESEARCH REPORTS
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D. Raz, B. Avi-Itzhak, H. Levy
Classes, priorities and fairness in queueing systems
Rutcor Research Report RRR 21-2004
RUTCOR, Rutcor University, June 2004 (35 pages) -
B. Avi-Itzhak, H. Levy, D. Raz
Quantifying fairness in queueing systems: Principles, approaches and applicability
Rutcor Research Report, RRR 25-2005
RUTCOR, Rutcor University, August 2005 (31 pages)
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