13. Success Criteria

13.1. Technical Metrics

  • Query latency <100ms (p95) for vector search.

  • kNN recall@10 >85% on evaluation set.

  • Bulk push success rate >99.9%.

  • Index size <10GB for 1M unique IPA forms.

13.2. User Experience Metrics

  • Increased search success rate (fewer “no results” queries).

  • Reduced typo-related search failures.

  • Positive user feedback on multilingual search.

  • Click-through rate improvement on search results.

13.3. Research Impact

  • Published dataset of IPA-enriched historical toponyms.

  • Reproducible methodology for phonetic gazetteer construction.

  • Open-source Epitran/PanPhon integration library for WHG.