Research and Analysis

Performance research, optimization analysis, and experimental features.

Early planning docs (archived)

An early (2025-11-11) never-executed planning pair — RESEARCH_INITIATIVES.md and RESEARCH_TRACKING.md — is preserved under docs/archive/research/. Its premise (an OptimizedDawg deprecation analysis) has since been resolved: OptimizedDawg was removed from the source tree, so the proposals it framed are superseded.

Contents

Future Enhancements

Exploration of potential future enhancements:

• Proposed features
• Technical feasibility
• Performance impact analysis
• Implementation considerations

Research Areas

Lowrance–Wagner unrestricted Damerau distance

Scientific and engineering reading of the 1975 recurrence:

• last-occurrence transposition macro
• budget-bounded streaming refinement
• cost-equivalence equation
• implementation, proof, and resource obligations

Edit distance with Real Penalty

Scientific analysis of Chen and Ng's ERP measure:

• exact recurrence and source examples
• raw-sequence pseudometric versus $g$-quotient identity
• gap-mass and interval lower-bound derivations
• implementation, test, and formal-proof mapping

Discrete Fréchet distance

Scientific analysis of Eiter and Mannila's coupling distance:

• coupling semantics and the complete Table 1 recurrence
• raw vectors versus identity modulo consecutive-duplicate collapse
• pinned-endpoint, one-sided-Hausdorff, and interval-bound derivations
• bottleneck-monoid, implementation, test, and formal-proof mapping

Time Warp Edit Distance

Scientific analysis of Marteau's timestamp-aware segment edit distance:

• unit-spaced recurrence and accumulated empty boundaries
• carry-aware interval match/deletion minima and length lower bound
• strict metric-domain correction and zero-parameter counterexample
• API, testing, security, and heterogeneous formal-proof mapping

SIMD Optimization

Research and implementation of SIMD optimizations:

• Vectorization opportunities
• Performance measurements
• Implementation phases
• Results and conclusions

Distance Optimization

Levenshtein distance computation optimization research:

• Algorithm improvements
• Implementation techniques
• Benchmark results
• Roadmap for future work

Comparative Analysis

Comparative analysis of different approaches and implementations:

• Algorithm comparisons
• Backend performance analysis
• Trade-off evaluations

Eviction Wrapper

Cache eviction strategy research and design:

• Eviction policy evaluation
• Implementation architecture
• Performance characteristics

Related Documentation

• Design Documents - Specifications derived from research
• Benchmarks - Performance measurement results
• Developer Guide - Performance optimization guide