Carnegie Mellon University

Alan Scheller-Wolf

Alan Andrew Scheller-Wolf

Richard M. Cyert Professor of Operations Management; Senior Associate Dean, Faculty and Research

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  • TEP - Tepper Building - Room 4502
  • 412-268-5066
Address
5000 Forbes Avenue
Pittsburgh, PA 15213

Areas of Study

Operations Management

Education

  • Columbia University - Master of Philosophy (Operations Research) - 1996
  • Columbia University - Ph D (Operations Research) - 1996
  • Columbia University - MS (Operations Research) - 1994
  • Stanford University - BA (Art History) - 1989
  • Stanford University - BS (Mathematics and Computational Science) - 1989

Research

Discrete Time Inventory Theory: Perishable inventory, spare parts systems, assemble to order systems. Service Systems: Healthcare, call centers. Queueing Theory: Multi-server queues, stability and moment conditions, strategic queueing, closed queueing networks, Markov Decision Processes. Applications: Renewable energy, product portfolio optimization, parking queues.

Publications

  • A Better Model for Job Redundancy: Decoupling Server Slowdown and Job Size

    (author(s): Kristen Gardner, Mor Harchol-Balter, Alan Scheller-Wolf)
    IEEE/ACM Transactions on Networking, 2017

  • Product Portfolio Restructuring: Methodology and Application at Caterpillar

    (author(s): Masha Shunko, Tallys Yunes, Giulio Fenni, Alan Scheller-Wolf, Valerie Tardif, Sridhar Tayur)
    POMS

  • An Analytical Throughput Approximation for Closed Fork/Join Networks

    (author(s): Erkut Sonmez, Alan Scheller-Wolf, Nicola Secomandi)
    INFORMS Journal of Computing 29(2), 2017; 251-267

  • A Better Model for Job Redundancy: Decoupling Server Slowdown and Job Size

    (author(s): Kristen Gardner, Mor Harchol-Balter, Alan Scheller-Wolf)
    IEEE Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS 2016), 2016

  • Corrigendum to Capacitated Inventory Problems with Fixed Order Costs: Some Optimal Policy Structure

    (author(s): Alan Scheller-Wolf, Guillermo Gallego)
    EJOR 253, 2016; 241

  • Redundancy-d: The Power of d Choices for Redundancy

    (author(s): Kristen Gardner, Mor Harchol-Balter, Alan Scheller-Wolf, Mark Velednitski, Samuel Zbarsky)
    Operations Research

  • The Power of d Choices for Redundancy

    (author(s): Kristen Gardner, Samuel Zbarsky, Mor Harchol-Balter, Alan Scheller-Wolf)
    Proceedings of ACM SIGMETRICS 2016 Conference on Measurement and Modeling of Computer Systems Poster Paper, 2016

  • Understanding Response Time in the Redundancy-d System

    (author(s): Kristen Gardner, Samuel Zbarsky, Mark Velednitski, Mor Harchol-Balter, Alan Scheller-Wolf)
    orkshop on Mathematical Performance Modeling and Analysis (MAMA 2016), 2016

  • Introduction to the Special Issue on Practice-Focused Research

    (author(s): Jérémie Gallien, Alan Scheller-Wolf)
    MSOM 18( 1), 2016; 1-4

  • OM Forum: Practice-Based Research in Operations Management: What It Is, Why Do It, Related Challenges and How to Overcome Them

    (author(s): Jérémie Gallien, Steve Graves, Alan Scheller-Wolf)
    MSOM 18(1), 2016; 5-14

  • Robust scheduling with logic-based Benders decomposition

    (author(s): Elvin Coban, Aliza Heching, John Hooker, Alan Scheller-Wolf)
    Operations Research 2014 Proceedings, 2016; 99-105

  • Electricity Trading and Negative Prices: Storage vs. Disposal

    (author(s): Yangfang Zhou, Alan Scheller-Wolf, Nicola Secomandi, Stephen Smith)
    Management Science 62(3), 2016; 880-898

  • Queueing with redundant requests: Exact analysis

    (author(s): Kristen Gardner, Samuel Zbarsky, Sherwin Doroudi, Mor Harchol-Balter, Esa Hyytia, Alan Scheller-Wolf)
    Queueing Systems 83(3), 2016; 227-259

  • Managing nurse lines – practical challenges and the developing theory

    (author(s): Xiaofang Wang, Laurens Debo, Alan Scheller-Wolf)
    International Journal of Production Research, 2015

  • Optimal inventory decisions in a capacitated online retailing system with customer priorities

    (author(s): Bisheng Du, Christian Larsen, Alan Scheller-Wolf)
    Service Systems and Service Management (ICSSSM), 12th International Conference, 2015; 1-6

  • The Benefit of Introducing Variability in Single-Server Queues with Application to Quality-Based Service Domains

    (author(s): Ying Xu, Alan Scheller-Wolf, Katia Sycara)
    Operations Research 63( 1), 2015; 233-246

  • M/M/c Queue with Two Priority Classes

    (author(s): Jianfu Wang, Opher Baron, Alan Scheller-Wolf)
    Operations Research 63(3), 2015; 733-749

  • Blood Platelet Inventory Management with Protection Levels

    (author(s): Ismail Civelik, Itir Karaesmen, Alan Scheller-Wolf)
    European Journal of Operations Research 243(3), 2015; 826-838

  • Optimization of Industrial-Scale Assemble-To-Order Systems

    (author(s): Willem van Jaarsveld, Alan Scheller-Wolf)
    INFORMS Journal of Computing, 2015

  • Merchant Commodity Storage and Term-Structure Model Error

    (author(s): Nicola Secomandi, Guoming Lai, François Margot, Alan Scheller-Wolf, Duane Seppi)
    Manufacturing & Service Operations Management 17(3), 2015; 302–320

  • Optimal inventory decisions in a capacitated online retailing system with customer priorities

    (author(s): Bisheng Du, Christian Larsen, Alan Scheller-Wolf)
    IEEE International Conference on Service Systems and Service Management, 2015; 1-6

  • Reducing latency via redundant requests: Exact analysis

    (author(s): Kristen Gardner, Samuel Zbarsky, Sherwin Doroudi, Mor Harchol-Balter, Esa Hyytia, Alan Scheller-Wolf)
    ACM Sigmetrics Conference, 2015

  • Exact Analysis of the M/M/k/setup Class of Markov Chains via Recursive Renewal Reward

    (author(s): Anshul Gandhi, Sherwin Doroudi, Mor Harchol-Balter, Alan Scheller-Wolf)
    Queueing Systems -- Selected papers from Sigmetrics 2013 77(2), 2014; 177-209

  • Delay Moment Bounds for Multiserver Queues with Infinite Variance Service Times

    (author(s): Rein Vesilo, Alan Scheller-Wolf)
    INFOR Special Issue on Queueing in Computer and Telecommunication Systems. 51(4), 2014; 161-174

  • Inventory Rationing for a System with Heterogeneous Customer Classes

    (author(s): Paul Enders, Ivo Adan, Alan Scheller-Wolf, Geert-Jan van Houtum)
    Flexible Services and Manufacturing 26, 2014; 344-386

  • Optimal Structural Results for Assemble-to-Order Generalized M-Systems

    (author(s): Emre Nadar, Mustafa Akan, Alan Scheller-Wolf)
    Operations Research, 2014

  • Optimal Structural Results for Assemble-to-Order M-Systems

    (author(s): Emre Nadar, Mustafa Akan, Alan Scheller-Wolf)
    Operations Research 62(3), 2014; 571-579

  • Exact Analysis of the M/M/k/setup Class of Markov Chains via Recursive Renewal Reward

    (author(s): Anshul Gandhi, Sherwin Doroudi, Mor Harchol-Balter, Alan Scheller-Wolf)
    ACM Sigmetrics Conference, 2013

  • Strategic Analysis of Technology and Capacity Investment in the Liquefied Natural Gas Industry

    (author(s): Erkut Sonmez, Sunder Kekre, Alan Scheller-Wolf, Nicola Secomandi)
    European Journal of Operational Research 226(1), 2013; 100-114

  • Redundancy Optimization for Critical Components in High-Availability Capital Goods

    (author(s): Kurtulus Oner, Alan Scheller-Wolf, Geert-Jan van Houtum)
    Operations Research 61(1), 2013; 244-264

  • Comparing Markov Chains: Combining Aggregation and Precedence Relations Applied to Sets of States

    (author(s): Ana Busic, Ingrid Vliegen, Alan Scheller-Wolf)
    Mathematics of Operations Research 37(2), 2012; 259-287

  • Quality and Staffing Interactions at Diagnostic Service Centers

    (author(s): Xiaofang Wang, Alan Scheller-Wolf, Laurens Debo)
    Naval Research and Logistics 59(8), 2012; 613-625

  • A large U.S. retailer selects transportation carriers under diesel price uncertainty

    (author(s): John Turner, Ben Peterson, Soo-Haeng Cho, Sunder Kekre, Alan Scheller-Wolf)
    Interfaces 4(42), 2012; 365-379

  • Push or Pull? Auctioning Supply Contracts

    (author(s): Cuihong Li, Alan Scheller-Wolf)
    POMS 20(1), 2011; 198-213

  • Sink or Swim Together: Necessary and Sufficient Conditions for Finite Moments of Workload Components in FIFO Multiserver Queues

    (author(s): Alan Scheller-Wolf, Rein Vesilo)
    Queueing Systems 67(1), 2011; 47-61

  • Supply Chain Management of Perishable Goods: A Review

    (author(s): Itir Karaesmen, Alan Scheller-Wolf, Borga Deniz)
    Handbook of Production Planning, 2011

  • Valuation of Storage at a Liquefied Natural Gas Terminal

    (author(s): Guoming Lai, Mulan Wang, Sunder Kekre, Alan Scheller-Wolf, Nicola Secomandi)
    Operations Research 59(3), 2011; 602-616

  • Scheduling of Dynamic In-Game Advertising

    (author(s): John Turner, Alan Scheller-Wolf, Sridhar Tayur)
    Operations Research 59(1), 2011; 1-16

  • Design and Analysis of Diagnostic Service Centers

    (author(s): Xiaofang Wang, Laurens Debo, Alan Scheller-Wolf)
    Management Science 56(11), 2010; 1873-1890

  • Interaction between Technology and Extraction Scaling Real Options in Natural Gas Production

    (author(s): Paul Enders, Alan Scheller-Wolf, Nicola Secomandi)
    IIE Transactions 42(9), 2010; 643-655

  • A Markovian Dual-Source Production-Inventory Model with Order Bands

    (author(s): Alan Scheller-Wolf, Sridhar Tayur)
    IJPE 121, 2009; 715-727

  • Combinatorial Coalition Formation and Cost Sharing for Group Buying

    (author(s): Cuihong Li, Alan Scheller-Wolf, Katia Sycara)
    Decision Support Systems 49(1), 2009; 1-13

  • Managing Inventories of Perishable Goods: The Effect of Substitution

    (author(s): Borga Deniz, Itir Karaesmen, Alan Scheller-Wolf)
    M&SOM 12(2), 2009; 319-329

  • Surprising Results on Task Assignment in Seerver Farms with High Variability Workloads

    (author(s): Mor Harchol-Balter, Alan Scheller-Wolf, Andrew Young)
    ACM Sigmetrics 2009 Conference on Measurement and Modeling of Computer Systems (SIgmetrics '09), 2009

  • Why Segregating Short Jobs from Long Ones under High Variability is not Always a Win

    (author(s): Mor Harchol-Balter, Alan Scheller-Wolf, Andrew Young)
    47th Allerton Conference on Communication, Control, and Computing, 2009; 121-127

  • An Exact and Efficient Algorithm for the Constrained Dynamic Operator Staffing Problem for Call Centers

    (author(s): Atul Bhandari, Alan Scheller-Wolf, Mor Harchol-Balter)
    Management Science 54(2), 2008; 339-353

  • Now or Later: A Simple Policy for Effective Dual Sourcing in Capacitated Systems

    (author(s): Alan Scheller-Wolf, Senthil Veeraraghavan)
    Operations Research 56(4), 2008; 850-864

  • Assessing the Impact of RFID on Return Center Logistics

    (author(s): Sunder Kekre, C. Forman, N. Langar, Alan Scheller-Wolf)
    Interfaces 37(6), 2007; 501-514

  • Building Efficient Product Portfolios at John Deere

    (author(s): Tallys Yunes, Dominic Napolitano, Alan Scheller-Wolf, Sridhar Tayur)
    Operations Research 55(4), 2007; 617-629

  • Building Efficient Product Portfolios at John Deere and Company

    (author(s): Tally Yunes, Alan Scheller-Wolf, Sridhar Tayur)
    Operations Research, 2007

  • Optimal Control of Serial, Multi-Echelon Inventory/Production Systems with Periodic Batch Ordering

    (author(s): Geert-Jan van Houtum, Alan Scheller-Wolf, Jinxin Yi)
    Operations Research 55(4), 2007; 674-687

  • Fundamental Characteristice of Queues with Fluctuating Load

    (author(s): Varun Gupta, Mor Harchol-Balter, Alan Scheller-Wolf, Uri Yechiali)
    Proceedings of ACM Sigmetrics 2006 Conference on Measurement and Modeling of Computer Systems (Sigmetrics '06), 2006; 203-215

  • How Many Servers are Best in a Dual-Priority M/PH/k System?

    (author(s): Adam Wierman, Taka Osogami, Mor Harchol-Balter, Alan Scheller-Wolf)
    Performance Evaluation 63(12), 2006; 1253-1272

  • Structural Interpretation and Derivation of Necessary and Sufficient Conditions for Delay Moments in FIFO Multiserver Queues

    (author(s): Alan Scheller-Wolf, Rein Vesilo)
    Queueing Systems 54(3), 2006; 221-232

  • Analysis of Cycle-Stealing with Switching Times and Thresholds

    (author(s): Taka Osogami, Mor Harchol-Balter, Alan Scheller-Wolf)
    Performance Evaluation 61(4), 2005; 347-369

  • Multiserver Queueing Systems with Multiple Priority Classes

    (author(s): Mor Harchol-Balter, Taka Osogami, Alan Scheller-Wolf, Adam Wierman)
    Queueing Systems 51(3-4), 2005; 331-360

  • Exploring Threshold-Based Policies for Load Sharing

    (author(s): Taka Osogami, Mor Harchol-Balter, Alan Scheller-Wolf, Li Zhang)
    Forty-Second Annual Allerton Conference on Communication, Control , and Computing, 2004; 1012-1021

  • Analysis of Cycle Stealing with Switching Cost

    (author(s): Taka Osogami, Mor Harchol-Balter, Alan Scheller-Wolf)
    Proceedings of ACM Sigmetrics 2003 Conference on Measurement and Modeling of Computer Systems (Sigmetrics '03), 2003; 184-195

  • Cycle Stealing under Immediate Dispatch Task Assignment

    (author(s): Mor Harchol-Balter, Cuihong Li, Taka Osogami, Alan Scheller-Wolf, Mark Squillante)
    Fifteenth ACM Annual Symposium on Parallel Algorithms and Architecture (SPAA '03), 2003; 274-285

  • Necessary and Sufficient Conditions for Delay Moments in FIFO Multiserver Queues: Why s Slower Servers are Better than One Fast Server for Heavy-Tailed Systems

    Operations Research 51(5), 2003; 748-758

  • Task Assignment with Cycle Stealing under Central Queue

    (author(s): Mor Harchol-Balter, Cuihong Li, Taka Osogami, Alan Scheller-Wolf, Mark Squillante)
    23rd International Conference on Distributed Computing Systems (ICDCS '03), 2003; 628-639

  • Vehicle Routing with Time Windows and Time-Dependent Rewards: A Problem from The American Red Cross

    (author(s): Jinxin Yi, Alan Scheller-Wolf)
    M&SOM 5(1), 2003; 74-77

  • Design of a Multi-Unit Double Auction E-Market

    (author(s): Pu Huang, Alan Scheller-Wolf, Katia Sycara)
    Computational Intelligence 18(4), 2002; 596-617

  • Capacitated Inventory Problems with Fixed Order Costs: Some Optimal Policy Structure

    (author(s): Alan Scheller-Wolf, Guillermo Gallego)
    EJOR 126, 2000; 603-613

  • Development of a Rapid-Response Supply Chain at Caterpillar

    (author(s): U. Rao, Alan Scheller-Wolf, Sridhar Tayur)
    Operations Research, 2000

  • Development of a Rapid-Response Supply Chain at Caterpillar

    (author(s): Uday Rao, Alan Scheller-Wolf, Sridhar Tayur)
    Operations Research 28(2), 1999; 189-204

  • Further Delay Moment Results for FIFO Multiserver Queues

    Queueing Systems 34, 1999; 387-4000

  • A Performance Agreement to Align the Operations of a Loading Dock and Fleet

    (author(s): Patricio Donoso, Alan Scheller-Wolf, Marcos SInger)
    Revista ABANTE 1(2), 1998; 167-188

  • Delay Moments for FIFO GI/GI/c Queues

    (author(s): Alan Scheller-Wolf, Karl Sigman)
    Queueing Systems 25, 1997; 77-95

  • New Bounds for Expected Delay in GI/GI/c Queues

    (author(s): Alan Scheller-Wolf, Karl Sigman)
    Queueing Systems 26, 1997; 169-186

  • Moments in Tandem Queues

    (author(s): Alan Scheller-Wolf, Karl Sigman)
    Operations Research 46, 1996; 378-380

Working Papers

  • Dual Sourcing Problem with Stock-out Dependent Substitution

    (author(s): Hekimoglu Mustafa, Alan Scheller-Wolf)

  • Markov Decision Processes
    Handbook of Healthcare Analytics
  • Queues with Redundancy: Is Waiting in Multiple Lines Fair?

    (author(s): Leela Nageswaran, Alan Scheller-Wolf)

  • Technological unemployment, meaning in life and the purpose of future business

    (author(s): Tae Wan Kim, Alan Scheller-Wolf)

  • That's Not Fair: Tariff Structures for Electricity Markets with Rooftop Solar

    (author(s): Singh Siddharth, Alan Scheller-Wolf)

  • Managing Wind-Based Electricity Generation in the Presence of Storage and Transmission Capacity

    (author(s): Yangfang Zhou, Alan Scheller-Wolf, Nicola Secomandi, Stephen Smith)

  • Consistent Staffing for Long-Term Care through On-Call Pools

    (author(s): Vince Slaugh, Alan Scheller-Wolf, Sridhar Tayur)

  • Green technology development and adoption: competition, regulation, and uncertainty - a global game approach

    (author(s): Xin Wang, Soo-Haeng Cho, Alan Scheller-Wolf)

  • Optimal Portfolio Strategies for New Product Development

    (author(s): Emre Nadar, Mustafa Akan, Laurens Debo, Alan Scheller-Wolf)

  • Staffing of a Service Center with Cross-Trained Agents, Heterogeneous Customers, and Quality Guarantees

    (author(s): Elvin Coban, Aliza Heching, Alan Scheller-Wolf)

  • The Benefits of State Aggregation with Extreme-Point Weighting for Assemble-to-Order Systems

    (author(s): Emre Nadar, Alp Ackay, Mustafa Akan, Alan Scheller-Wolf)

  • Evaluating the First-Mover's Advantage in Announcing Real-Time Delay Information

    (author(s): Siddharth Prakash Singh, Mohammad Delasay, Alan Scheller-Wolf)

  • Optimization of Stock Levels for Service Tools Industry

    (author(s): Ingrid Vliegen, Ana Busic, Alan Scheller-Wolf, Geert-Jan van Houtum)

  • Robust Project Scheduling at a Large IT Services Delivery Organization

    (author(s): Elvin Coban, Aliza Heching, John Hooker, Alan Scheller-Wolf)

  • Moment Conditions for Multiserver Queues under Integral Load

    (author(s): Michele Dufalla, Alan Scheller-Wolf, Rein Vesilo)

  • Optimal R&D Portfolio Strategies under Different Information Regimes

    (author(s): Emre Nadar, Mustafa Akan, Laurens Debo, Alan Scheller-Wolf)

  • Inducing Optimal Scheduling with Selfish Users

    (author(s): Paul Enders, Anshul Gandhi, Varun Gupta, Laurens Debo, Mor Harchol-Balter, Alan Scheller-Wolf)
    Management Science, 2009

  • Inventory Models with Expedited Ordering: Single Index Policies

    (author(s): Alan Scheller-Wolf, Geert-Jan van Houtum, Senthil Veeraraghavan)
    2006

  • Exact and Efficient SOlution Method for Parameter-Dependent Markov Chain Optimization Problems

    (author(s): Atul Bhandari, Alan Scheller-Wolf, Mor Harchol-Balter)
    2004

  • Managing Supply Chains in Emerging Markets

    (author(s): Alan Scheller-Wolf, Sridhar Tayur)
    Quantitative Models for Supply Chain Management , 1998; 703-736

Awards and Honors

  • First runner-up, MASCOTS 2016 Best Paper Award: "A Better Model for Job Redundancy: Decoupling Server Slowdown and Job Size", by Kristen Gardner, Mor Harchol-Balter and Alan Scheller-Wolf (2016)
  • Canadian Operations Research Society - Winner, CORS Queueing Theory SIG Student Paper Prize (Jianfu Wang) (2016)
  • Tepper School of Business - BP Junior Faculty Research Chair (2000)

University Service

  • Strategic Research Committee, Committee Chair (2016 - )
  • BERKMAN FACULTY GRANT AWARD COMMITTEE, Committee Member (2010 - )
  • FACULTY JUDICIAL REVIEW BOARD, Committee Member (2010 - )

Consulting

  • Kenneth Flaxman, P.C. (August 2013)
  • VERA Institute of Justice (2011 - 2011)
  • Massive Incorporated (2007 - 2008)
  • Caterpillar Inc. (2006 - 2008)
  • Behavior Health Metrix (2006 - 2007)
  • John Deere & Company (2006 - 2007)
  • SmartOps (2005 - 2006)
  • American Red Cross (2002 - 2003)
  • Caterpillar Inc. (2002 - 2003)
  • Air Products International (2002 - 2002)

Professional Activities

  • Board of Advisors, Management and Business Review (March 2016 -)
  • Associate Editor, Queueing Systems (2011 -)
  • Associate Editor, Management Science (2009 -)
  • Member, M&SOM, Editorial Board (2008 -)
  • Associate Editor, Operations Research (January 2006 -)
  • Member, INFORMS , Nicholson Prize Committee (2016 - 2016)
  • Guest Editor-in-Chief, Special Issue on Practice, MSOM (2013 - 2016)
  • Member, INFORMS , Nicholson Prize Committee (2015 - 2015)
  • Member, INFORMS , Dantzig Prize Committee (2011 - 2011)
  • Member, INFORMS , M&SOM Journal Review Committee (2011 - 2011)
  • Chairperson, INFORMS , IMPACT Prize Committee (2009 - 2010)
  • Committee Chair, Collaborative Research Workshop, TUE/CMU, Organizing Committee (2008 - 2008)
  • Member, INFORMS , Applied Probability Council (2008 - 2008)
  • Member, INFORMS , IMPACT Prize Committee (2008 - 2008)
  • Committee Member, ACM Sigmetrics Conference , Program Committee (2006 - 2007)
  • Committee Chair, INFORMS , JFIG Paper Competition (2006 - 2006)
  • Committee Chair, Research and Education Collaboration Program, CMU and TUE, Organizing Committee (2004 - 2004)
  • Committee Chair, Workshop on Multiserver Scheduling, Organizing Committee (2004 - 2004)

Courses Taught

  • Advanced Stochastic Models (47776)
    • 2017 Mini 3 Section: A
  • Sustainable Operations (45960)
    • 2017 Mini 3 Section: A
    • 2016 Mini 5 Section: E
    • 2016 Mini 3 Section: A
    • 2014 Mini 2 Section: A
  • Six Sigma Tools and Techniques (45861)
    • 2016 Mini 2 Section: A, M
    • 2015 Mini 4 Section: A, M
    • 2014 Mini 3 Section: A
  • Six Sigma Tools And Techniques (45861)
    • 2015 Mini 2 Section: A