Brian's Digest 97

Tables of Contents

SCI.OP-RESEARCH Digest Mon, 15 Dec 97 Volume 4: Issue 50

[Q]: branch & bound in MATLAB or C (4 msgs)
BOXSTEP method
Combinatorial Optimization '98
Corporate OR Group Strategy
CPLEX and Delphi (5 msgs)
Lagrange Relax. Experiments (4 msgs)
Lagrange relaxation
LP solver or simplex method written in visual basic (2 msgs)
Metaheuristics - definition... (3 msgs)
Newbie question: shortest path variation and AMPL (2 msgs)
Question about CPLEX (3 msgs)
Ref or method to incremental linear programming (3 msgs)
tslin35.zip Friendly linear programming and linear goal programming
Underconstrained linear equations with constraints on the solution vector (3 msgs)

SCI.OP-RESEARCH Digest Mon, 8Dec 97 Volume 4: Issue 49

Call for papers-Metaheuristics
Call for Papers: Modeling Languages and Approaches
Feasibility in Nonlinear Programms (2 msgs)
Help with dynamic programming wanted
Lagrange Relax. Experiments (2 msgs)
Lagrange relaxation (3 msgs)
Looking for reference for two dimensional layout optimisation (3 msgs)
Optimization Help (2 msgs)
OR in shipping (2 msgs)
Ref or method to incremental linear programming
Scheduling rules in time sharing systems
WANTED: OR Humour
What OR technique is best?

SCI.OP-RESEARCH Digest Mon, 1 Dec 97 Volume 4: Issue 48

Adaptive Simulated Annealing ASA-16.3
Any News Gourp for Network Otimization?
CPLEX callable lybrary
Davis-Putnam algorithm
Discrete event simulation (5 msgs)
Feasibility in Nonlinear Programms
Forecasting Help
Help Required for Forecast Model Building
linear programming
new bounds for job shop scheduling
Operations Research Help
optimization (2 msgs)
Papers on the Generalized Assignment
Poisson Generator Code (3 msgs)
Position Announcement
QP testproblems? (2 msgs)
QUEUING NETWORK ANALYSIS SOFTWARE
Simscript scheduling models
Software for BDD
Telecoms Market Modeling and Forecasting

SCI.OP-RESEARCH Digest Mon, 24 Nov 97 Volume 4: Issue 47

1&2D cutting stock software
[Q] References on one dimensional (global) search (3 msgs)
Another Constrained Shortest Path
Call for Papers: Agile Manufacturing
Call for Papers: International Journal of Technology Management
Conference Announcement: MPS Nordic '98
CPLEX callable lybrary
Faculty Positions at Rutgers
Fortune 50 Opportunity
Job Opportunity in Optimization
Multiple processor scheduling (2 msgs)
Need a copy of hadley and whitin , will pay decent amount
Need info on an optimization problem
Need info on Parallel Sim. Annealing
newsgroup for heuristics ???
problem optimizing timber cutting (3 msgs)

SCI.OP-RESEARCH Digest Mon, 17 Nov 97 Volume 4: Issue 46

1d cutting optimization (3 msgs)
Another Constrained Shortest Path
Benchmarks com. lp codes? (3 msgs)
Complexity question (2 msgs)
CPLEX Callable Library & Watcom C/C++
Definition of 'metaheuristics'
Forecasting (TS and input variables) (2 msgs)
Forecasting (TS and input variables) ADDENDUM
help/pointers sought with OR problem
IPCO Houston '98: 2nd Call for Papers
jobs offered: in IC-Parc, Imperial College, London, UK
Linear Programming with a Macintosh? (4 msgs)
LP Software (2 msgs)
Need info on Telecommunication networks (2 msgs)
Ranking of the OR journals
Recommend me some books..
Research Fellow at Aberdeen University
Scientific information
Software for multiway tables (OLAP) - Download WinHELM
Some Test Problems Needed!
Subset Sum variation
What are some pros and cons of Genetic Algorithms?

SCI.OP-RESEARCH Digest Mon, 10 Nov 97 Volume 4: Issue 45

[Q:] NLP not using derivatives
AHP Models
Alternative Optima for LP/IP (3 msgs)
Boolean equations (2 msgs)
BRAZILIAN NEEDS HELP!!!!
Commercial Gantt Chart Displaying Toolkit
CPLEX Callable Library & Watcom C/C++
Davis-Putnam algorithm (2 msgs)
Definition of 'metaheuristics'
Faculty position at UT-Austin
Help with travel salesman problem (2 msgs)
Hop Constrained Shortest Path (2 msgs)
Looking for info on Risk Analysis
M.E. in Financial Engineering from Princeton University
n-dimensional interpolation
Operations Research Analyst Position
Optimizing problem! (2 msgs)
Paper: Some Applications of Statistical Mechanics of Financial Markets
Paper request of the Salmi & Virtanen book
Statistician
Subset Sum variation
Union of polyhedra

SCI.OP-RESEARCH Digest Mon, 3 Nov 97 Volume 4: Issue 44

2D-cutting stock-algorithm (2 msgs)
Advice for extremely *small* problem please?
Boolean equations (4 msgs)
Call for Papers: Agile Manufacturing
Call for Papers: International Journal of Technology Management
Commercial Gantt Chart Displaying Toolkit
Conference update
Exact solutions for the MAX-CUT problem
GAMS compiler limit
Help/pointers sought with OR problem (2 msgs)
Help with TSP for subset of nodes
ISR SPECIAL ISSUE DEADLINE EXTENDED
kroa200.tsp optimal route
Looking for info on Risk Analysis (2 msgs)
Network Programming
POSITIONS AVAILABLE
Traffic science books
Union of polyhedra

SCI.OP-RESEARCH Digest Mon, 25 Oct 97 Volume 4: Issue 43

2-opt/3-opt/convex hull algorithm request
Advice for extremely *small* problem please?
Any SubTour elimination for Branch Traversal Problem
Availability of Tested code for k-shortest path algorithm (2 msgs)
BRAZILIAN NEEDS HELP!!!!
CALL FOR PAPERS
Constraints in deductive databases
CP97 Dynamic CS Workshop Programme
DEA (2 msgs)
Determining convexity of a constraint/space (2 msgs)
FACULTY POSITIONS AVAILABLE
Help with Salesman Problem for subset of nodes
Help with TSP for subset of nodes
looking for "job shop scheduling" data (2 msgs)
looking for software to compute job-shop scheduling problems
Network flow. C codes (5 msgs)
Physicist's Model of Boom and Bust (2 msgs)
Q: Using SoPlex for a Cutting-Plane-Algorithm (2 msgs)
Software Demonstrations at the Dallas INFORMS Meeting
Subset Sum variation Uniqueness Condition of Euler Tour (2 msgs)

SCI.OP-RESEARCH Digest Mon, 20 Oct 97 Volume 4: Issue 42

2-opt/3-opt/convex hull algorithm request
8th ISDG
[Q]: references for sensitivity analysis for MIP
Advice for extremely *small* problem please? (2 msgs)
Discrete opt. specialist needed
Free electronic newsletter about experimental optimization
ISR 8:3 Contents and Editorial Notes
lin.prog & opt. software (2 msgs)
Looking for a latex style.bst for MOR
OR in public health bangladesh (4 msgs)
Q: Using SoPlex for a Cutting-Plane-Algorithm
Scheduling Queries
SSCC98 Conference - South Africa
Subset Sum variation
Super-Efficient Global Optimization Algorithm
Third and Final Call for Participation - CP97

SCI.OP-RESEARCH Digest Mon, 13 Oct 97 Volume 4: Issue 41

[Q]: references for sensitivity analysis for MIP
Another Question (RE:Best tool for optimizing with integer variables.) (2 msgs)
ASCEND IV 0.8 released for Windows/UNIX
Asymmetric Traveling Salesman Problem (2 msgs)
CFP: Young OR Conference - Meta Heuristics Stream
CPLEX Web gets a facelift
Good OR Textbook
Help needed - staffing models and methodologies
Help needed : Control on Distribution Networks
ICM*98 in China
INFORMS Presentation database
IPCO Houston '98: Call for Papers
PAKDD Final CFP: Papers Due 16 Oct 1997
Parallel Implementation of Quadratic Programming Algorithm (5 msgs)
Young OR Conference 1998 UK: Optimisation Stream

SCI.OP-RESEARCH Digest Mon, 6 Oct 97 Volume 4: Issue 40

[Q] Lower bounds for indefinite QP (4 msgs)
Another Question (RE:Best tool for optimizing with integer variables.)
Any LP package that can assign the order when branching integer variables? (4 msgs)
Best tool for optimizing with integer variables. (12 msgs)
Call Center Conference at Wharton
CFP-Journal of Heuristics
convex programming
Critical Line Algorithm for QP
Equation Parsing (2 msgs)
Faculty Positions at Marquette University
Frank-Wolfe algorithm
Good OR Textbook
help for a subproblem in network design
INFORMS Dallas
METIS 3.0: Graph/Mesh Partitioning and Sparse Matrix Ordering Software
Opportunity Cost: Two Questions
Powersim Delivers Metro Simulation Development Suite
Quality Week Europe, 4-7 November 1997, Brussels: http://www.soft.com/QualWeek/QWE97
request: case studies of use of OR/MS in electronic commerce
SIMULATION COURSE
the Choloski (spelling?) factorization of the Hessian
Very Large Scale Optimization? (6 msgs)
Which is easier for an optimizer? (5 msgs)

SCI.OP-RESEARCH Digest Mon, 29 Sep 97 Volume 4: Issue 39

Announce : Graphical LP - teaching software.
ANNOUNCE: OR-Objects 0.8 - An Operations Research Java library.
Application advice requested (2 msgs)
C/C++ linear/nonlinear/ODE equation solvers
Convex programming
Determining convexity of a constraint/space
Help needed for Operations Research
IBM Postdoc in Mathematical Sciences
Management Science in Spreadsheets
Manufacturing Simulation
Mincost Convex Flow SoftWare?
Shortest Path with Delay Constraints (2 msgs)
Very Large Scale Optimization?
Which is easier for an optimizer?

SCI.OP-RESEARCH Digest Mon, 22 Sep 97 Volume 4: Issue 38

Best fitting algorithm for pattern insertion (3 msgs)
C++ Graph Classes Code
Concave Minimization: software needed
Delay constrained Shortest Path Problem
Dynamic Programming Software
Global Optimization Conference?
Introductory text for stochastic processes (2 msgs)
IRC and OR
Job Opportunity at RAND
LP and Beyond!
Manufacturing Simulation (3 msgs)
Network Multicommodity FLow formulation + Side constraints (2 msgs)
OR-Objects 0.7 -- Java(tm) Class Library for Operations Research
problem on MOLP
Quality Week Europe, 4-7 November 1997, Brussels
Simultaneous CREW and EQUIPMENT scheduling (2 msgs)

SCI.OP-RESEARCH Digest Mon, 15 Sep 97 Volume 4: Issue 37

Best path algorithms
Bin-packing and mulit-Knapsack problems + Network constraints
C++ Graph Classes Code
Complementary Pivot Method
Concave Minimization: software needed
cpu independent benchmarks (2 msgs)
Help with armijos rule
Job Announcement
Job Openings at Wharton
Meta Heuristic Stream at the Young OR Conference
Network Multicommodity FLow formulation + Side constraints
nonlinear inequalities (7 msgs)
OR-Notes
Passengers Train Scheduling
Shortest path in matrix
Test Problems for AGV flowpth design
TSP w/ precedent constraint
VERT method (2 msgs)

SCI.OP-RESEARCH Digest Mon, 8 Sep 97 Volume 4: Issue 36

Benefits Matrix, Saaty and Multi-criteria Pros and Cons (2 msgs)
Cargo Loading of arbitraly shaped 3D objects
CFP: EURO XVI (1998) in Brussels
Complementary Pivot Method
Concave Minimization: software needed
cpu independent benchmarks
Exact algorithm for FCTP?
Help needed on generating test problems (2 msgs)
Job Announcement
LP Sensitivity Analysis
National/Intl. Optimization Conference? (2 msgs)
NLREG - Nonlinear & linear statistical regression program - 147 0906040154 JGR
NP-hard?
Postdoctoral position in manufacturing systems
Quadratic optimisation procedures (2 msgs)
Quality Week Europe, 4-7 November 1997, Brussels
Shortest path in matrix (4 msgs)
TSP w/ precedent constraint
What is a tree packing problem?

SCI.OP-RESEARCH Digest Mon, 1 Sep 97 Volume 4: Issue 35

A 0-1 Integer Programing problem
Assignment / Scheduling Problem - Any Help Would be GREATLY Appreciated
C++ Simulated Annealing Code? (2 msgs)
Career Opportunities at Kestrel Institute
Cargo Loading of arbitraly shaped 3D objects (2 msgs)
CFP-Journal of Heuristics
Christofides' TSP algorithm
Christofides' TSP algorithm tsp_solve
Concave minimization: software needed
Dynamic Programming
Linear complementarity problem
object technology in optimization
Reproduction in Genetic Algorithm
Solving a System of Nonlinear Equations (2 msgs)
What type of Problem/Solution is this? (2 msgs)

SCI.OP-RESEARCH Digest Mon, 25 Aug 97 Volume 4: Issue 34

Announce OpsResearch.com
Edmonds 2 algorithm
Ehrlang C- Stochastic Modeling (3 msgs)
Estimation -discontinuous
General Linear Least Squares with bounds
Help needed on generating test problems (2 msgs)
Integer Programming on parallel architectures (3 msgs)
New book - Entropy Optimization
Routing Problem
Software on Critical Path Method or Metra Potential Method

SCI.OP-RESEARCH Digest Mon, 18 Aug 97 Volume 4: Issue 33

A Quality and Reliability journal.
Are you interested in workshops on mapping?
Estimation -discontinuous
Extended Deadline August 31st - CP97 DCSP Workshop
General Linear Least Squares with bounds
Lumpy demand - T.M. Williams
New Book on Parallel Optimization
Routing Problem
Simulation Software
SolvOpt 1.1 is available now for downloading

SCI.OP-RESEARCH Digest Mon, 11 Aug 97 Volume 4: Issue 32

[Q] Indefinite QP
General Linear Least Squares with bounds (2 msgs)
Interactive Neighbourhood Search in Scheduling
JobShop Help!!
LINE BALANCING
Permutation numbering (CLARIFICATION)
PhD Scholarship in Operational Research - Imperial College
Postdoctoral position available: INRIA Sophia-Antipolis
Stafford Beer
Variable Splitting
WANTED: Information on 3D Foam Cutting Package

SCI.OP-RESEARCH Digest Mon, 4 Aug 97 Volume 4: Issue 31

[Q]: packing rectangles (2 msgs)
[Q] Networks + Nonlinear constraints
[Q] on **basic** LINEAR PROGRAMMING (3 msgs)
Irreducible bases for {x:Ax=0,x>=0}
It's Not Too Late to Register for INCOSE '97
LU decomposition/rev Simplex (2 msgs)
Need BFGS w/ splines instead of derivatives
Need this book (2 msgs)
Permutation numbering (CLARIFICATION)
PhD Studentship
Plotting sparsity patterns
Prerequisites for an Understanding of Linear Programming (2 msgs)
Testing output of linear program
Workshop on OR for the Deregulated Power Industry
Workshop on Practical Approaches to Simulation Validation (a.k.a. V V & A)
Workshop on Teaching Management Science Using Spreadsheets

SCI.OP-RESEARCH Digest Mon, 28 July 97 Volume 4: Issue 30

[Q] Networks + Nonlinear constraints (2 msgs)
Aircraft Engine Inventory Management Problem
Conference Update and Registration Information
Flow shop/search methods (2 msgs)
Interval Solver for MS Excel
LINDO 32 bits DLL USE
Multi-echelon Inventory Problem
Need BFGS w/ splines instead of derivatives (3 msgs)
Optimization benchmark updates
Plotting sparsity patterns
Variable Splitting
Vertex Cover Problem

SCI.OP-RESEARCH Digest Mon, 21 July 97 Volume 4: Issue 29

"Balanced" assignment
Column Generation Subproblem question
Dantzig wolfe decomposition
LINDO 32 bits DLL USE
Maximum distance vertex
OR in China
PADS98 CFP
Plotting sparsity patterns
Q: references on scheduling problem
Routing-problem (4 msgs)
Scheduling Problem
Workshop on Industrial Constraint-Directed Scheduling

SCI.OP-RESEARCH Digest Mon, 14 July 97 Volume 4: Issue 28

(Other) Question on B = LU, and Bnew = Lnew Unew
Applications of rhs-parametric nonlinear MIP
Banxia Software Summer Promotion
CFP: International Journal of Production Economics
Common usage
C Source Code Needed
Cutting sequence out of standard lengths (2 msgs)
Danzig wolfe decomposition (3 msgs)
Flowshop Journal Paper Wanted
GRAPH PARTITIONING / VERTEX SEPARATOR
HELP: UltraSAN. Measures with UltraSAN.
Looking for assembly line balancing test problems
Multicommodity problem. References. (2 msgs)
Network flow with unknown demands? (2 msgs)
Please help me formulate this Linear Programming problem
Problems with MPSX 2.0 on IBM 3090 with MVS
Q: Where is DIMACS file formats documentation? (3 msgs)
Question on B = LU, and Bnew = Lnew Unew (4 msgs)
Routing-problem
Soplex Mailing list?
The value of the integer solution = relaxation solution, WHY ! (3 msgs)

SCI.OP-RESEARCH Digest Mon, 7 July 97 Volume 4: Issue 27

"Balanced" assignment (3 msgs)
[Q] Is MTSP in class P if TSP is in class P?
Advice needed for Augmented Lagrangian Method
AMPL vs. GAMS (2 msgs)
CFP: International Journal of Technology Management
CFP: Journal of Intelligent Manufacturing
Code for 0-1 knapsack problem ?
C Source Code Needed
Dynamic programming? (2 msgs)
ESA'97 - Reminder and Updated Call for Participation
Experts in I2 Technologies Rhythm
Fuzzy NLP
GRAPH PARTITIONING / VERTEX SEPARATOR
Help: Reference on Empirivaleval. of algorithms
Help: References on empirical evaluation of algorithms
HELP: Searching for Transportation packages ...
Jobshop
Multiple objectives on network flow problems
OR/IE Applications In Steel Rolling Mills
Ordered MinMax
Papers, graphs, data, code: Statistical mechanics modelling of EEG
Pertubation (2 msgs)
Problems with MPSX 2.0 on IBM 3090 with MVS (2 msgs)
Quadratic Programming with quadratic constraints software
Quality Week Europe
Scenario optimization
Scheduling Problem(Flowshop)
Searching for NLP method
sequencing jobs on machines
Soplex Mailing list?
System Dynamics Software

SCI.OP-RESEARCH Digest Mon, 30 Jun 97 Volume 4: Issue 26

[Announce] Optimal Control Problem Solver
Advice needed for Augmented Lagrangian Method (2 msgs)
Any programs for multidimensional knapsack problems
Automatic recalculation
Code for semidefinite programming
Dynamic programming? (2 msgs)
Dynamic programming in economics and finance (2 msgs)
Exact MIP-Solvers (2 msgs)
Follow ups to 1993 Econometrica Bollserslev and Engle published "CommonPersistence in Conditional Variances" ???
Global Optimization code for least squares fitting ?
Graph coloring
ISR 8:2 Contents and Editorial Notes
ISR SPECIAL ISSUE CALL FOR PAPERS
Linearizing a pooling (blending) problem
LOOKING for OPTIMAL SET COVERING algorithm
MIPLIB example NOSWOT
New book about Exponential distribution
Optim. benchmark/software updates
Production scheduling priority
Q: a queue with a lognormal service distribution
Quadratic Programming with quadratic constraints software (3 msgs)
Sensitivity in Convex Quadratic Programming (3 msgs)
Verify Optimality for ILP??
Walsh function
What is a "multi-threaded" MIP solver
What is this problem? (3 msgs)
Why doesn't LPAKO v3.3 free LP code solve this problem? (4 msgs)
Workshop on Industrial Constraint-Directed Scheduling

SCI.OP-RESEARCH Digest Mon, 23 Jun 97 Volume 4: Issue 25

Call the cplex-lib (3 msgs)
CFP: Agile Manufacturing Systems
CFP: AI and Expert Systems in Product Development
CFP: Innovation in Manufacturing
Dynamic programming in economics and finance
Generating Probability Distributions
Global Optimization code for least squares fitting ? (2 msgs)
Graph coloring
Hopfield linear programming neural net
IIE Transactions Special Issue on Manufacturing Logistics
Looking for some training video for IE training
LP/Pascal (4 msgs)
MIPLIB example NOSWOT
New Project Scheduling Software
Non-linear 0-1 programming
Nonconvex Optimization (2 msgs)
Piecewise linear optimization problem (2 msgs)
Q: a queue with a lognormal service distribution
Q: Stochastic Process (3 msgs)
Question re: Enumeration algorithm (2 msgs)
References about Box complex search method
Software info for LP FAQ update
Solving highly constrained integer problems (2 msgs)
Verify Optimality for ILP?? (2 msgs)
What is a "multi-threaded" MIP solver ?

SCI.OP-RESEARCH Digest Mon, 16 Jun 97 Volume 4: Issue 24

Announcing the Steiner Tree Web Page
Automatic recalculation
Call for papers: 2nd Annual International Conference on Industrial Engineering
Applications and Practice
Call for Sessions: INFORMS Montreal/Computer Science Technical Section
Cargo fitting problem (2 msgs)
COMBINATORIAL OPTIMIZATION '98
Conjugate gradient behavior at saddle points (3 msgs)
Constraint Programming
Dynamic programming in economics and finance (2 msgs)
Forecasting Help (6 msgs)
Fourth International Conference on Optimization: Techniques and Applications
Fuzzy linear programming
Help with optimisation coding (2 msgs)
How to obtain all solutions with CPLEX MIP? (2 msgs)
Integer Programming test problems
Job Opening: SAS Programming in DC area
Multi threaded MIP solver (3 msgs)
NLREG - Nonlinear & linear statistical regression program - 147 0614031046 GOR
OR Programs...
Parametric analysis with lp_solve..
Piecewise linear optimization problem
REQ: Articles that mention accuracy of models
Solving highly constrained integer problems
Special Company Seeks Special Developers
TSP circuit (2 msgs)
Updating a lup decomposition
What companies need to use SAS in SF bay area?

SCI.OP-RESEARCH Digest Mon, 9 June 97 Volume 4: Issue 23

Announcement of MCF, a network simplex implementation
Call for papers 2nd International Conference on Industiral Engineering Applications and Practice
Call for Papers: International Journal of Technology Management
Connected components of vector matroids
Finding Simple Paths (General Digraph)
First Call for Papers !!!
Forecasting Help (2 msgs)
Help: Bi-Level Model with Inner LP
How to obtain all solutions with CPLEX MIP? (4 msgs)
k-satisfiability program available
Making and implementing policy
Minimal spanning arborescence
Need help solving large MIP by rounding/fixing parts of RMIP solutions
Non-linear 0-1 programming (2 msgs)
Nonlinear Programming Applet
OAA, BLP, Vertex Enumeration and Cluster Analysis
Optimization Benchmark Updates
Process Simulators Revised SoPlex Distribution
TRUST - Algorithm for Global Optimization
TSP circuit
TSP circuit (humorous commentary)
Updating a lup decomposition

SCI.OP-RESEARCH Digest Mon, 2 Jun 97 Volume 4: Issue 22

A travelling sales person solution in linear programming
Computational Decision Analysis
Conference Announcement ICOTA '98
Electrical Systmes Modeling Workshop
Finding Simple Paths (General Digraph)
Flow Shop Problem
GAMS/ZOOM does not read option file (2 msgs)
Job Announcement
Jobs Offered: Constraint Programming at IC-Parc, London, UK
Knapsack Problem Code?? (3 msgs)
min-cut problem
OPERATIONS RESEARCH (ECONOMETRIE)-medewerker
OR Programs...
Positions for OR consultants
Postdoc pos'n (production scheduling)
Recommendations for nonlinear optimization software? (3 msgs)
The Hamiltonian Page - Announcement
TSP circuit (2 msgs)
Vacature in Nederland
Which program for Gantt charts? (3 msgs)

SCI.OP-RESEARCH Digest Mon, 26 97 Volume 4: Issue 21

Trust region -- source code -- (2 msgs)
About lp_solve package
Benchmarks/test cases for Flow-Shop-Problem with sequence dependant setups?
CCLP-LAND (2 msgs)
Code for steiner tree problem
ESA'97, Final Program and Registration Information
Function with non-zero gradient (help) (3 msgs)
Global Optimization Software Evaluation
Help needed to run cplex3.0 programs in cplex4.0 environment. (2 msgs)
Help with Min(Max) problem using Solver package
How to check if a convex cone contains only 0?
Jensen's Inequality Restricted
Knapsack Problem Code??
Multicommodity Instances site.
Optimisation of piecewise linear functions (2 msgs)
Optimiz. Benchmark&Software Updates
OR Programs... (2 msgs)
PATAT'97 Call for Participation
Post-Doc position
QP sensitivity
R&D positions available at ILOG
Scheduling - Preferential Bidding? (2 msgs)
Solution to bin packing problems
TSP circuit (2 msgs)
Various metrics for bin packing

SCI.OP-RESEARCH Digest Sat, 17 May 97 Volume 4: Issue 20

2-D Cutting Stock Problem (3 msgs)
Correlations between Safety and Accidents
Cutting Stock Optimization
ESA'97, List of accepted papers
Function with non-zero gradient (help)
Global Optimization Software Evaluation
Help: linear algebra and Excel
Help with Min(Max) problem using Solver package
Knapsack Problem Code??
Matlab and CPLEX (2 msgs)
Nelder & Mead simplex method (help...) (3 msgs)
PERT data wanted!
Piecewise approximation help? (3 msgs)
Summary : Forecasting
Variance and largest components
Visiting Assistant Professor Opening
Wanted: Survey of Ranking of Journals in Operations Research

SCI.OP-RESEARCH Digest Mon, 12 May 97 Volume 4: Issue 19

Algorithm implementation
AMPL modeling (2 msgs)
A question on SQP algorithms
Call for applications for a scolarship in France
Continuous simulated annealing (3 msgs)
Controls Questions
Convex optimization (4 msgs)
CPLEX question
Cutting Stock Optimization
Discrete event simulation in Delphi: Delphisim v.2.01 (4 msgs)
DONLP2_AD
DONLP2_DC (C code for NLP)
EEG data now publicly available
Ellipsoid method for Linear Programming
Forecasting
Help on Link Matrices
How to check if a convex cone contains only 0? (5 msgs)
Ideas for Symposium (2 msgs)
lp_solve: How do I add/adjust functionality?
Minor/Major iterations and other algorithmic details (2 msgs)
MIP or Goal Programming
MPL On-line Tutorial now available FREE on the Web
Muenster Summer School
Need Help!: Calculus of Variations (3 msgs)
On line database of OR/MS related presentations: Call for contributions
Op-Res Majors What Academic Depart? (3 msgs)
optim. code & benchmarks
OR software
OSL
Pick&Place optimization
Pickup and Delivery Problem using GAMS
Portfolio optimization (3 msgs)
Redundancy optimization ...
Round-robin Tournaments
Stochastic modelling software
TABU SEARCH (2 msgs)
tsplib d198 and pr299

SCI.OP-RESEARCH Digest Sat, 3 May 97 Volume 4: Issue 18

"Optimization on the Internet" sessions in San Diego
A comparison of solver engines wanted - updated
CPLEX question
Ellipsoid method for Linear Programming
Help: Travelling Salesman Problem
Markowitz-portfolio-model
MIP or Goal Programming
Modeling Workshop
Q. about Shortest Paths Tree DISTRIBUTED alg.
Retail Applications of OR/MS
Sensitivty analysis (2 msgs)
Software Demonstration sessions in San Diego
Theory of Constraints
Virtual Duality
Vistiting Position in QA Applied Statistics: University of Cincinnati

SCI.OP-RESEARCH Digest Mon, 28 April 97 Volume 4: Issue 17

"Theory of Constraints" (3 msgs)
A comparison of solver engines wanted (5 msgs)
Announce: Qhull 2.4 for convex hull, halfspace intersection, Delaunay triangulation, and Voronoi vertices
A question on positive definite matrices (2 msgs)
A question on SQP algorithms
Bland's rule applied to dual simplex
CO98 - First announcement
Combinatorics conference in Australia
Computer Simulation of Urban Transit System
Contents. Optimization Methods and Software
CPLEX with AMPL (2 msgs)
Distance to boundary of convex hull?
Dual solution from primal solution?
Forecasting
Help! Set Covering Problems...
Help with Search Techniques (3 msgs)
Integer programming examples ?
JOB - LP modeller/Programmer - Chicago area
K.E.Stecke article
l_1 norm min or constraints - which is better?
Linear Programming Cycling Problem (2 msgs)
Max Flow Min cut problem
Maximizing polygon area
Mesh optimization (2 msgs)
NASA Lattice Planning Technique
Optimization on a hypersurface
PCx (linear programming code) announcement
Q: AI in OR?
Q:machine scheduling with release times (2 msgs)
Reference on sequential ordering problems (2 msgs)
Roun-robin Tournaments
Sensitivty analysis
Shortest Paths Tree Distributed Algorithm?
Solver engines, what to look at
Survey paper on Matroids

SCI.OP-RESEARCH Digest Mon, 21 April 97 Volume 4: Issue 16

2nd Announcement: PNPM'97 and TOOLS'97
[Q] Complexity of NLP (2 msgs)
Distance to boundary of convex hull?
Dual solution from primal solution? (2 msgs)
Econometric Analysis (2 msgs)
Forecasting
Help on MPS Format (4 msgs)
Help with Search Techniques (4 msgs)
Is there an obvious solution to this
l_1 norm min or constraints - which is better? (3 msgs)
Linear Programming Cycling Problem (5 msgs)
Maximizing polygon area
Non-linear multiobjective optimization
POSITIONS AVAILABLE
Q: AI in OR? (2 msgs)
Questions regarding a MIP setup
Reference on sequential ordering problems
Roun-robin tournaments
Scheduling
UPS - OR Analyst
Urban Transportation and OR/MS journals

SCI.OP-RESEARCH Digest Mon, 14 April 97 Volume 4: Issue 15

[Q] Complexity of NLP (2 msgs)
Algorithm G.R.G. (2 msgs)
A question on positive definite matrices
Bland's rule applied to dual simplex
Dual solution from primal solution? (2 msgs)
General Optimization Question
Help with Search Techniques
INFORMS San Diego Program Available
Job for PhD in Computer Science or OR
k-th best solution in ILP (3 msgs)
keeping up with the job market
Linear Programming and Optimization
Maximizing polygon area (2 msgs)
Maximum cliques
Modeling customer attrition/retention
Positions available
Quality Week '97 Brochure
Questions regarding a MIP setup (3 msgs)
Research Position: Constraint-Directed Scheduling
Scheduling with penalty functions (2 msgs)
Series parallel graphs
Split Delivery Vehicle Routing Problem, Single Depot, Multiple Commodity. References?
Want Book with LP applications for Undergraduate Class (4 msgs)

SCI.OP-RESEARCH Digest Mon, 7 April 97 Volume 4: Issue 14

Bland's rule applied to dual simplex
Branch and bound in C??
Dyn.Progr.Software (2 msgs)
Fuzzy Decision Making
Help! Set Covering Problems... (4 msgs)
Integer programming examples ? (2 msgs)
ISO Gauss-Newton or quasi-Newton software in C for least-squares problems (4 msgs)
Job announcement
Linear Programming and Optimization (4 msgs)
Maximizing polygon area
maximum weighted node-weighted independent set
Mixed integer programming and combinatorial optimization (2 msgs)
New code for SDP.
Nonlinear Multicriteria Optimization (2 msgs)
Northern California Chapter to meet April 9
paralell LP?
Representation of Hydro and Thermal Plants
scheduling and integer programming (3 msgs)
Series parallel graphs
Unbounded Knapsack Problem (3 msgs)
Variational inequality algorithms (2 msgs)
Version 1.2 of cGOP for global optimization available

SCI.OP-RESEARCH Digest Mon, 31 Mar 97 Volume 4: Issue 13

2d Cutting Stock Problem (3 msgs)
Branch and bound in C??
Fuzzy Decision Making
Help for "frequencies planification"
Heuristical Solution of MINLP
Info
ISO Gauss-Newton or quasi-Newton software in C for least-squares problems (2 msgs)
Job Offer
Linear Optimization
Linear Systems (2 msgs)
Maximum weight node-weighted independent set
Paralell LP? (2 msgs)
Parallel LP?
Plea for Global Optimization Applications
Position for PhD from the former SU
Problem scaling: what is it? (3 msgs)
Question in Combinatorial Optimization (6 msgs)
Ranking
Third ISIR Summer School On Inventory Modeling

SCI.OP-RESEARCH Digest Mon, 24 Mar 97 Volume 4: Issue 12

2d Cutting Stock Problem
A Variation on the TSP - Help!
Belgium/Fuzzy: Call for Participation
Call for Papers: Journal of Intelligent Manufacturing
CFP: Design and Implementation of Agile Manufacturing Systems
Conjugate Gradient/Line search code
Def. "H Mobius Loop"????
Help:History of Linear Programming (6 msgs)
Help for "frequencies planification"
Heuristical Solution of MINLP
IDEFIX and CIM
ISR 8:1 Contents and Editorial Notes
Job announcement
Minimization of the quantity of dye batches and cuts of jobs for textile dyeing processes (4 msgs)
Need help with OSL and User Exit subroutines
NEW BOOK: INTRO. TO LINEAR OPTIMIZATION
NLP software with automatic differentiation
OR & file use... (2 msgs)
OR/MS in Aquaculture
Partial Expectation refrence for inventory planning
Pipeline networks simulation
Plea for Global Optimization Applications (2 msgs)
Position
Training Course Optimization Problem (2 msgs)
TSP-software (2 msgs)
TSP in March Scientific American (6 msgs)
Two Stage Stochastic Programming with Recourse
Upper- and lower bounds for the TSP solution (9 msgs)
Wanted: Periodic Scheduling

SCI.OP-RESEARCH Digest Mon, 17 Mar 97 Volume 4: Issue 11

Another question about Cutting Stock problems
Code for MIN COST NET FLOW alg. with CONVEX function cost
Conjugate Gradient/Line search code (2 msgs)
CPLEX routines and FORTRAN on SUN (2 msgs)
DataBuster Shopping Agent Demo - Annoucement by Aptronix, Inc.
Data Envelopment Analysis software package (3 msgs)
Factory Schedule Show - A new siftware
HELP: Dynamic programming
HELP: Dynamic programming (2)
Help in modeling a problem
Help regarding matrix generation to interface with cplex
Help requested, need PERT, critical path software (2 msgs)
HIGH PERFORMANCE COMPUTING COLLOQUIUM
How Many paths through a network? (3 msgs)
I NEED HELP With OSL and C programs (2 msgs)
Invitation and Call for Papers for the 2nd Annual International Conference on Industrial Engineering Applications and Practice
Monte carlo simulation PC software needed
Need help with OSL and User Exit subroutines
Newbie -- Help needed!
Optimization benchmarks
OR in the real world - part 2
Partial Expectation refrence for inventory planning
Q : Jobs on Operaions Research
S: Dynamic Programming (3 msgs)
Two Stage Stochastic Programming with Recourse
Upper- and lower bounds for the TSP solution

SCI.OP-RESEARCH Digest Mon, 10 Mar 97 Volume 4: Issue 10

A new nonlinear (non-smooth) optimization freeware is available
APORS 97, Nov 30 - Dec 4, 1997, Melbourne, Australia
C++/Constraint Programming/OO Development Positions Available
Call for Contribution and Participation
DelphiSim: Discrete Event Simulation in Pascal
Dynamic Probabilistic Systems Textbook
Free NExS Spreadsheet Genetic Algorithm Plug-In
Generating Combinations
HELP: conferences in maintenance related topics
How Many paths through a network? (2 msgs)
I NEED HELP With OSL and C programs
MIT Professional Program: Individual Choice Behavior
New Book Announcement and Special Offer
Parallel Algorithms Book Anouncement
Shortest paths
Trim Loss Problem (2 msgs)
When solutions are not unique in Integer Programming question (2 msgs)

SCI.OP-RESEARCH Digest Mon, 3 Mar 97 Volume 4: Issue 9

[HELP!] Question about the CPXgetx() (and CPXgetpi()) in CPLEX v4.0 (2 msgs)
Alabama paradox (3 msgs)
Chinese postmans prob
DelphiSim: Discrete event simulation with Borland's Delphi2
Help: Tool for Drawing Gantt-Charts
help with queueing problem (6 msgs)
looking for test problems. (2 msgs)
Need OR programmer
New Web Page
Non-linear optimisation (3 msgs)
Production book just published!
projection pursuit alg.
Round and round... (2 msgs)
SoPlex -- new LP solver available for accademic use
Survey
Survey: Virtual electronic communities for OR/MS: 4 questions

SCI.OP-RESEARCH Digest Mon, 24 Feb 97 Volume 4: Issue 8

[HELP!] Question about the CPXgetx() in CPLEX v4.0 (4 msgs)
[HELP] Linear Programming Question [LONG] (2 msgs)
BIN PCKING 3D AND 2D
Call for papers
Call for Papers: Journal of Intelligent Manufacturing
Chinese postmans prob
computational complexity question
Contents. Optimization Methods and Software
ESA'97: Last call for papers
Gomory Cuts Implemented in CPLEX?? (2 msgs)
Help: articles needed
help on set covering problems
Influence diagrams - Free Software?
Is there application case? (2 msgs)
Looking for packing algorithm
Network file formats
Network Solver in C/C++ (2 msgs)
nl file format (2 msgs)
online courses
programer with experience in 3d-tin...
Traveling Salesman Heuristics in Excel? (2 msgs)
Tutorial allocation software (6 msgs)
yield management and logistics

SCI.OP-RESEARCH Digest Mon, 17 Feb 97 Volume 4: Issue 7

1997 Winter Simulation Conference
[Fwd: 1997 International Credit Risk Management Conference]
EXCEL 7 and need to solve search methods
EXCEL Templates
Finding ALL cycles (loops) in undirected graph (2 msgs)
Help me on OR techniques and programing
Help with multiobjective combinatorial optimizations?
ILP size versus running time
Influence diagrams - Free Software? (2 msgs)
Integer Prog. with Genetic Algoritms
Is there application case?
PATAT'97 call for abstracts
Reduced gradient
Scheduling shareware or cheap software

SCI.OP-RESEARCH Digest Mon, 10 Feb 97 Volume 4: Issue 6

2-Dim. cutting stock (2 msgs)
Academic position
Bazaraa-Sherali-Shetty NLP book question (2 msgs)
CFP: International Journal of Production Economics
CPLEX parallel MIP on Sun Ultrasparc (and Origin?)
Dijsktra + small changes
Fast Orthogonal Search Algorithm - where ?
Finding ALL cycles (loops) in undirected graph
GAs for multiconstraint knapsack & set partitioning
job opportunities
linear programming plug-in for the NExS spreadsheet
Matlab for Lp (5 msgs)
New at IOL
Open PhD student positions
ORS Training Courrses for 1997
Ph.D. Fellowships - Spatially Distributed Control
Short Courses
Short Courses on Data Fusion and Control Theory (2 msgs)
Strengths and weaknesses of Disjunctive Graphs for scheduling
The 17th Seminar on Stochastic Processes
Visualizing sparsity structure? (2 msgs)

SCI.OP-RESEARCH Digest Mon, 3 Feb 97 Volume 4: Issue 5

"Optimal Repairman Strategies" (3 msgs)
(Mixed) Integer Programming (2 msgs)
2D graph layout question
A: standard textbook on queueing theory
Belgium Fuzzy
Bi-Level Optimization
Call for "SPEC98" codes from the INFORMS community
Complexity of Convex Programming (2 msgs)
Conference
CPLEX parallel MIP on Sun Ultrasparc (and Origin?)
Feedback
Java in optimization? (2 msgs)
Large-scale QP (3 msgs)
Looking for Mathcad and/or S-Plus users
LP Polytopes
Mean-variance analyses in portfolio analyses
Modeling sessions at Lausanne Math Prog Symp
Network Problem
Positions available
Q: standard textbook on Queueing Theory (5 msgs)
Questions on CPLEX3.0 and 4.0
Ratios
Search trajectories and TSP (2 msgs)
Simulating Wiener/Borwnian Processses
Textbook for an applications oriented course in nonlinear programming (3 msgs)
Using Cplex in Matlab
Vehicle routing/scheduling

SCI.OP-RESEARCH Digest Mon, 27 Jan 97 Volume 4: Issue 4

(Mixed) Integer Programming (5 msgs)
2D graph layout question (2 msgs)
[Q]: approximation methods for complex rational functions
APORS 97 Conference, Nov 30 -Dec 4, 1997, Melbourne, Australia
A probability question. (3 msgs)
A special chinese postman problem
Choosing from two prob distributions (2 msgs)
Clustering algorithm
Container storage and retrieval system
Hospital personal planning
Incremental Shortest Path Algorithm
INFORMS Job Placement
Job opening in MCDA
lp_solve and vc++ (3 msgs)
Mean-variance analyses in portfolio analyses
Model for scheduling classroom.
MSTM Director Search
Need Help:Who has the general GAs code ? (2 msgs)
Papers: Canonical momenta indicators ...
PhD thesis on Batch Scheduling
Selecting Optimal Combinations
Separation,minimum-norm,projection,convex analysis
Spreadsheets
TSP: Complete Enumeration of paths for optimal solution
UCLA short course on "Evolutionary Computation"

SCI.OP-RESEARCH Digest Mon, 20 Jan 97 Volume 4: Issue 3

2-d bin packing (2 msgs)
2D graph layout question
Clustering algorithm
Complexity of norm maximization
CPLEX ERROR (2 msgs)
CUTTING and PACKING/ NESTING, too
Good book for Hidden Markov Models
Graduate Assistant Position (University of Cyprus)
How to evaluate air warfare effectivness?
Incremental Shortest Path Algorithm
Indefinite quadratic minimization on a simplex. (5 msgs)
Mean-variance analyses in portfolio analyses
Mean Variance Portfolio Optimizer
N-dimensional assignment
Network Programming
PERFORMANCE OF FINANCIAL INSTITUTIONS
Royal Optimization: The N-Queens Puzzle! (2 msgs)
Set covering
Software for distributing parametric studies across workstations
Special issue of Optimization Methods & Software
Spreadsheets
TSP Solvers
UK Job in Constraint Programming
Update of Optimization Benchmark Webpage
Wanted: Simulation package in Borland Delphi

SCI.OP-RESEARCH Digest Mon, 13 Jan 97 Volume 4: Issue 2

Announcement: AMPL Training Seminarin Reno 1/20-21
Computing a boundary representation from lin. inequalities (6 msgs)
CUTTING and PACKING/ NESTING, too
Dual of an MILP (2 msgs)
Heuristic TSP
LP questions (2 msgs)
Network Flows Solution Manual
OR-Notes
Probabilistic Interpretations
Set covering (2 msgs)
Test problems
Two disjoint path problems

SCI.OP-RESEARCH Digest Mon, 6 Jan 97 Volume 4: Issue 1

A problem in extremal graph theory (3 msgs)
book on interior-point methods
Career Opportunity
Complexity of linear programming with TUM(Totally Unimodular Matrx)
DSP application of OR
IOL News and Call for Volunteers
Location Theory: Need Help
NP-complete kludge? (5 msgs)
OR Analyst Positions [Atlanta GA]
Problem in graph theory (2 msgs)
pseudopolynomiality
Simulated Annealing in Matlab (2 msgs)
WANTED : Algorithm for vehicle loading problem