veritext/changelog.md

Changelog

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

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

[Unreleased]

Added

• Project scaffold with pyproject.toml and development tooling
• Core exception hierarchy (VeritextError and subclasses)
• Core types: ValidationContext, CheckResult, ValidationResult
• Word tokeniser with Unicode normalisation support
• Configuration module with pydantic-settings
• Structured logging with structlog
• Metrics module with Metric protocol, AggregateStats, and BatchResult types
• BLEU metric implementation (BLEU-1 through BLEU-4 with brevity penalty)
• Lexical similarity metric (Jaccard similarity and token overlap)
• ROUGE metric (ROUGE-1, ROUGE-2, ROUGE-L with precision/recall/F-measure)
• Flesch-Kincaid readability metrics (grade level and reading ease)
• Batch scoring with aggregate statistics for all metrics
• Validators module with Check protocol for validation checks
• Metric-based validators: BleuValidator, RougeValidator, LexicalValidator
• Constraint validators: LengthValidator, ReadabilityValidator, ContainsValidator, ExcludesValidator
• Composite validators: AllOf (all checks must pass), AnyOf (any check must pass)
• Factory functions for clean validator API (bleu(), rouge(), lexical(), length(), readability(), contains(), excludes(), all_of(), any_of())
• Semantic similarity module with embedding-based text comparison (requires veritext[semantic] extra)
• SemanticSimilarity metric using sentence-transformers for semantic relatedness
• SemanticValidator for threshold-based semantic similarity validation
• semantic() factory function for creating semantic validators
• Embedding caching for performance optimisation in repeated comparisons
• Native pytest plugin for CI/CD integration (entry point: pytest11)
• validate_text() assertion function for expressive test assertions
• text_validation marker for filtering validation tests
• Pytest fixtures: text_validator factory and validation_context helper
• Detailed failure messages with text preview and check diagnostics