PSTACK-COMPRESS: Reference Implementation and Reproducibility Code

Reference implementation of the PSTACK-COMPRESS algorithm and scripts reproducing all experimental results from the paper "PSTACK: An Optimal Online Compression Algorithm for Hysteresis-Driven Data Streams" (submitted to Theoretical Computer Science, Elsevier). Contents: - pstack_implementation.py: Algorithm 1 (online Preisach extremum stack) - run_experiments.py: reproduces Tables 3-4 and Experiments 1-4 - README.txt: usage instructions Requirements: Python >= 3.9, numpy >= 1.24 Runtime: < 60 seconds on a standard laptop (CPU only, seed=42)