Custom MATLAB problem libraries

A custom provider can live in any user-owned writable directory. It must define a selector and loader with stable MATLAB function names:

• myproblems_select(options) returns the matching problem names;

• myproblems_load(name) returns a Problem.

Register the root and canonical functions once:

registration = struct( ...
    'name', 'myproblems', ...
    'root', '/path/to/myproblems', ...
    'select_function', 'myproblems_select', ...
    'load_function', 'myproblems_load');
registerProblemLibrary(registration);

Then select it like a built-in provider:

options.plibs = {'s2mpj', 'myproblems'};
scores = benchmark({@solver1, @solver2}, options);

An identical repeated registration is harmless. The same public name cannot silently be redirected to a different root or different functions; unregister the old provider before registering a replacement.

unregisterProblemLibrary('myproblems');

Unregistering removes the registry and MATLAB path entries but preserves the provider directory and its data. Generic tools may call resolveProblemLibrary('myproblems') to obtain validated function handles. Ordinary benchmark users need only options.plibs.