Jürgen Lentz (8 notebooks)#

AMPL Bin Packing Problem with GCG#

Notebooks > AMPL Bin Packing Problem with GCG
bpp.ipynb Open In Colab Open In Deepnote Open In Kaggle Open In Gradient Open In SageMaker Studio Lab
Description: Dantzig-Wolfe decomposition for Bin Packing Problem with GCG
Tags: gcg, bpp, amplpy, dantzig-wolfe-decomposition, branch-price-and-cut, highlights
Author: Jürgen Lentz (8 notebooks) <lentz@ampl.com>

AMPL Capacitated p-Median Problem with GCG#

Notebooks > AMPL Capacitated p-Median Problem with GCG
cpmp.ipynb Open In Colab Open In Deepnote Open In Kaggle Open In Gradient Open In SageMaker Studio Lab
Description: Dantzig-Wolfe decomposition for Capacitated p-Median Problem with GCG
Tags: gcg, cpmp, amplpy, dantzig-wolfe-decomposition, branch-price-and-cut, highlights
Author: Jürgen Lentz (8 notebooks) <lentz@ampl.com>

Diverse Circuit Routing in Multi-Layer Optical Networks#

Notebooks > Diverse Circuit Routing in Multi-Layer Optical Networks
diverse_routing.ipynb Open In Colab Open In Deepnote Open In Kaggle Open In Gradient Open In SageMaker Studio Lab
Description: SRLG-diverse routing of circuits over a heterogeneous multi-layer DWDM network with express and multiplex links, node inclusion/exclusion and maximally diverse routing, following Xu et al. (2013)
Tags: telecom, network-design, diverse-routing, srlg, multi-objective, mip, amplpy, highs
Author: Jürgen Lentz (8 notebooks) <lentz@ampl.com>

Handling AMPL Errors and Warnings: ErrorHandler in amplpy#

Notebooks > Handling AMPL Errors and Warnings: `ErrorHandler in amplpy <../notebooks/handling-ampl-errors-and-warnings-errorhandler-in-amplpy.html>`_
error_handler.ipynb Open In Colab Open In Deepnote Open In Kaggle Open In Gradient Open In SageMaker Studio Lab
Description: Shows how to use amplpy.ErrorHandler and amplpy.AMPLException to intercept, filter, and route AMPL errors and warnings — covering default raise behaviour, custom recovery strategies, and logging integration.
Tags: amplpy, api, error-handler, exceptions, logging, highlights
Author: Jürgen Lentz (8 notebooks) <lentz@ampl.com>

Inspecting AMPL Models: expand and show with amplpy#

Notebooks > Inspecting AMPL Models: `expand and show with amplpy <../notebooks/inspecting-ampl-models-expand-and-show-with-amplpy.html>`_
expand_show.ipynb Open In Colab Open In Deepnote Open In Kaggle Open In Gradient Open In SageMaker Studio Lab
Description: Demonstrates the ampl.show(), ampl.expand(), and entity-level expand() methods introduced in amplpy 0.17.0, using the classic diet problem as a running example.
Tags: amplpy, api, expand, show, diet, highlights
Author: Jürgen Lentz (8 notebooks) <lentz@ampl.com>

Intercepting AMPL Output: OutputHandler and Kind in amplpy#

Notebooks > Intercepting AMPL Output: `OutputHandler and Kind in amplpy <../notebooks/intercepting-ampl-output-outputhandler-and-kind-in-amplpy.html>`_
output_handler.ipynb Open In Colab Open In Deepnote Open In Kaggle Open In Gradient Open In SageMaker Studio Lab
Description: Shows how to use amplpy.OutputHandler and amplpy.Kind to intercept, filter, and route AMPL interpreter output — covering silent solving, solver log capture, and structured logging by output kind.
Tags: amplpy, api, output-handler, logging, highlights
Author: Jürgen Lentz (8 notebooks) <lentz@ampl.com>

Multi-Objective Knapsack Problem with AMPLPY#

Notebooks > Multi-Objective Knapsack Problem with AMPLPY
knapsack.ipynb Open In Colab Open In Deepnote Open In Kaggle Open In Gradient Open In SageMaker Studio Lab
Description: knapsack problem using multiple objectives, setting objective-specific options
Tags: multi-objective, multi-objective-options, lexicographic-objectives, knapsack, amplpy, highlights
Author: Jürgen Lentz (8 notebooks) <lentz@ampl.com>

Setting and Getting AMPL Options in amplpy#

Notebooks > Setting and Getting AMPL Options in amplpy
options.ipynb Open In Colab Open In Deepnote Open In Kaggle Open In Gradient Open In SageMaker Studio Lab
Description: Shows every way amplpy exposes to set and get AMPL options — snake_case methods, dict-style indexing, camelCase aliases, and per-solve keyword overrides — covering interpreter options, solver-specific option strings, value types, and restore patterns.
Tags: amplpy, api, options, solver-options, highlights
Author: Jürgen Lentz (8 notebooks) <lentz@ampl.com>