julia-mpsge/MPSGE.jl

Numeraire: always print; and enable auxilliary vars

Open

#232 opened on Aug 12, 2025

View on GitHub
 (0 comments) (0 reactions) (0 assignees)Julia (3 forks)auto 404
enhancementgood first issue

Repository metrics

Stars
 (22 stars)
PR merge metrics
 (PR metrics pending)

Description

Two issues re the numeraire:

  1. It would be good to print the numeraire with the solve when it's user defined. At least when there's only a single fixed variable, and the numeraire is therefore clear. And maybe for multiple fixed variable values, just include them all; they're basically all equivalently the numeraire.
  2. I think we should enable for a fixed auxiliary variable to be the numeraire. My testing suggests that it's not functional at this point. Fixing an auxiliary variable still selects the largest consumer as the default numeraire.

Contributor guide

Research direction
Investigate the numeraire selection logic in the solve function and how auxiliary variables are handled. Modify the printing routine to include the numeraire and extend the selection to allow fixed auxiliary variables as numeraire.
Tech stack
julia
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JuliaGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65