ArffFiles/CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[1.2.1] 2025-07-15 Bug Fixes and Improvements

Added

• Library version from CMake projecto to ArffFiles.hpp
• Library catch2 as a conan test requirement
• Install target for CMake

[1.2.0] 2025-06-27 Refactoring and Improvements

Added

• Claude TECHNICAL_REPORT.md for detailed analysis
• Claude CLAUDE.md for AI engine usage
• Method summary that returns the number of features, samples, and classes without loading the data
• Check for file size before loading to prevent memory issues
• Check for number of samples and features before loading to prevent memory issues
• Check for number of classes before loading to prevent memory issues

Internal

• Refactored code to improve readability and maintainability
• Improved error handling with exceptions
• Actions to build and upload the conan package to Cimmeria
• Eliminate redundant memory allocations and enhance memory usage
• Enhance error handling with exceptions
• Change getSize return type to size_t for better compatibility with standard library containers
• Implement move semantics for better performance

[1.1.0] 2024-07-24 String Values in Features

Added

• Allow string values in features
• Library logo

Fixed

• Fixed bug in numeric attributes states

Removed

• Catch2 git submodule
• iostream include

[1.0.0] 2024-05-21 Initial Release

Added

• Read Arff Files with last or first column as target
• Read Arff Files with determined target column
• Return X with a vector of vectors of dimensions (n_features, n_samples), this way each feature is a vector
• The class values a factorized to integers (factorize method can be used to factorize any vector of strings)
• Return y as a vector of integers
• Values marked as ? are replaced with -1
• Can return the original lines read as a vector of strings
• Can return the className and the classType
• Can return the features as a vector of strings (exluding the target)