Changelog • hrvester

Quality Assessment System

Quality grades (A/B/C/D/F) for each measurement phase based on clinical HRV standards
Signal quality index (0-100) calculated from artifact levels and data completeness
Automatic quality filtering via min_quality_threshold parameter in process_fit_file() and process_fit_directory()
Thresholds aligned with HRV literature

Enhanced Data Processing

Processing functions include quality metrics in output
Quality metrics stored in cache for re-processing
Improved error handling and validation in preprocessing pipeline

New Functions

Enhanced process_fit_file() and process_fit_directory() with quality filtering
Quality assessment integrated into preprocessing functions

Bug Fixes

Fixed artifact detection edge cases in preprocessing pipeline
Improved handling of missing or invalid RR interval data
Enhanced robustness of heart rate recovery calculations

Features

Initial release with core HRV processing functionality
Kubios-style artifact detection and correction
Multiple correction methods (linear, cubic spline, Lipponen-Tarvainen)
Orthostatic test analysis with phase-specific processing
Caching system for efficient batch processing