Bob Fourer

President, AMPL Optimization Inc. · Professor Emeritus, Northwestern University

[Bob Fourer @4er]

I have completed an interview for the "Subject to" podcast hosted by Prof. Anand Subramanian.

A video is available on the "Subject to" channel of YouTube at https://t.co/kKR34Ispct, and the audio can be accessed on several podcast platforms listed at https://t.co/GKDucHiO2C.

[Bob Fourer @4er]

@fermatslibrary

[Bob Fourer @4er]

@octonion To avoid having to define the big has_letter table, you can use the AMPL string function "match": simply replace "has_letter[i,j]" by "(if match(i,j) > 0 then 1)" in the constraint.

[Bob Fourer @4er]

I'll be presenting this workshop at INFORMS Analytics in Houston next week. https://t.co/eZF1TUiHWR It's an end-to-end view of how AMPL is used in applications, from prototyping to development to deployment, featuring some notable recent additions to the AMPL toolkit.

[AMPL Optimization @AMPLopt]

Attending INFORMS Analytics in Houston April 4-6? Join us for a comprehensive AMPL Workshop on "Adding Optimization to Your Applications, Quickly and Reliably: From Prototyping to Integration" Sunday 3-4:45, Marriott Kingwood B. Details at https://t.co/zCJQlhzZ4c #2022Analytics

[Bob Fourer @4er]

Announcing our Technology Workshop at the INFORMS Business Analytics Conference https://t.co/7gPN2HMSM4: "Adding Optimization to Your Applications, Quickly and Reliably: From Prototyping to Integration with AMPL" Sunday, April 3, details at https://t.co/eZF1TUiHWR #2022Analytics

[Bob Fourer @4er]

One week left to submit a talk in the ** Software for Optimization ** stream at the EURO 2022 conference, 3-6 July in Finland https://t.co/FXyWYmzi4h If interested, reply with a tentative title, and I will send you an invitation with instructions to complete your submission

[Bob Fourer @4er]

@leandro_cc Thanks for pointing this out. The tweet has been replaced by one that has correct links . . . I hope. Let me know if you see any other trouble.

[Bob Fourer @4er]

From this week's IFORS conference, my talk on "How Linear Programming Became Practical" https://t.co/M3fwKfHnu6 (video), https://t.co/WTzMxlArYQ (slides) #optimization

[Bob Fourer @4er]

I'll be speaking (from home) to student groups at New York Univ (March 18) and Northeastern Univ (April 5) on "Modeling, not Programming: the 'Modern' Approach to Optimization in Operations Research"

[Bob Fourer @4er]

2021 Beale–Orchard-Hays Prize for Excellence in Computational Mathematical Programming *** Nomination Deadline March 15 *** Eligibility: written works 2015-2020 demonstrating excellence in any aspect of computational optimization. Details and instructions: https://t.co/kRZJKwLqTz

[Bob Fourer @4er]

I'm co-organizing the Optimization Software stream at EURO 2021 this summer. Deadline for submissions is this weekend! Thanks to this year's hybrid format, you can submit without making any travel commitments

[AMPL Optimization @AMPLopt]

Optimization software stream @euro2021Athens 11-14 July, ONLINE or IN ATHENS: Deadline to submit at https://t.co/Eiy4aI6gyC is this weekend! Use these session codes: 6ee3c870 LP/MIP, 01fdda27 NLP/MINLP, ab2a7b35 modeling software, 93ad51b6 deployment software, 9c0bd769 all other

[Bob Fourer @4er]

AMPL is hiring for a new position on the business side of the company #ORMS #Analytics #Optimization

[AMPL Optimization @AMPLopt]

Position available: Senior Marketing Professional with strong background and interest in software-related marketing, and familiarity with #optimization or another area of mathematical modeling https://t.co/EDXIY9MxcL

[AMPL Optimization @AMPLopt]

Understand the optimization modeling lifecycle. Learn the benefits of model-based optimization. See case studies of successful applications in diverse businesses. Attend our INFORMS webinar this Thursday, Aug 27, 11:00 EDT (UTC-4) -- registration is free: https://t.co/UkdicMMzQa

[Bob Fourer @4er]

I'll be presenting the first in the new INFORMS series of sponsored webinars, on model-based optimization. Three new case studies included!

[AMPL Optimization @AMPLopt]

Attend our INFORMS webinar, August 27, 11:00 EDT (UTC-4) *** Adding Optimization to Your Applications: AMPL's Model-Based Approach to Fast Development and Reliable Deployment *** Free registration at https://t.co/HKshuwRD3i

[Bob Fourer @4er]

LINDO Global 12.0 for AMPL now available from us, with extensive global optimization support including integer variables, trig functions, min/max/abs, floor/ceil/round/trunc. Learn more: https://t.co/MNNWGO1jHQ Get a demo/trial: https://t.co/keGRuDCIOb

[Bob Fourer @4er]

September 2020 will mark the 35th anniversary of the first work on the AMPL project at Bell Labs, by David Gay, Brian Kernighan, and me. Hear Brian's recollections of that time in this interview by Lex Fridman

[AMPL Optimization @AMPLopt]

Brian Kernighan interviewed by @lexfridman on the origins and principles of AMPL: https://t.co/uO0hpQO0ED #optimization #analytics #orms

[Bob Fourer @4er]

AMPL Optimization Inc. has posted an announcement of a new software development position. @AMPLopt #optimization

[AMPL Optimization @AMPLopt]

Position Available: Senior Optimization Software Developer: combines ability to build and support complex software, specifically in C and C++, with a strong background in the theory and practice of large-scale optimization. Details at https://t.co/l8Q5Gla9wR

[AMPL Optimization @AMPLopt]

New Direct Spreadsheet Interface to #AMPL #optimization models. Works with .xlsx files on Windows, macOS, and Linux. Improved support for multidimensional tables and for sheet names https://t.co/xTo9bJSoiO

[AMPL Optimization @AMPLopt]

2nd of two videos just released: New in AMPL for 2020 https://t.co/AHk9VDiC9m featuring: Direct spreadsheet interface, Solver callbacks, Jupyter notebooks, Beyond the desktop with alternative computing environments & alternatives for access to AMPL

[AMPL Optimization @AMPLopt]

1st of two videos just released: "Model-Based Optimization with AMPL" https://t.co/J34Fc6BsgB featuring: model-based vs. method-based approaches, modeling language vs. programming language approaches, declarative vs. executable approaches