Nested
An autonomous, persistent tracker that logs both macro and micro iterations of a nested solver architecture to a single CSV file.
Autonomous Lifecycle Management
This tracker listens to the parent (macro) solver's lifecycle to automatically manage OS file locks. It lazily opens the CSV file in append mode when a run starts and safely closes the file when the run ends. This allows a user to execute the solver multiple times sequentially without manually managing the tracker, resulting in all consecutive runs being cleanly appended to the same file.
Data Structure
The output CSV inherently interleaves "MACRO" summary rows and "MICRO" detail rows. It leverages the TrackingContext to stamp each row with a run number, an optional experiment name, and to correlate micro iterations to their parent macro iteration.
Parameters
The outer solver managing the high-level algorithm (e.g., RandomRestartSolver).
The inner solver executing the detailed optimization steps (e.g., RSplineSolver).
The file destination for the CSV data.
A list of NestedTrackerColumn definitions detailing the CSV structure. Defaults to defaultColumns.