14. Success Criteria¶

14.1. Technical Metrics¶

14.1.1. Search Performance¶

Metric	Target	Measurement Method
Vector search latency (p95)	<100ms	Elasticsearch slow log analysis
kNN recall@10	>85%	Evaluation on curated test set
Text search latency (p95)	<50ms	Elasticsearch slow log analysis
Completion suggest latency (p95)	<20ms	Elasticsearch slow log analysis
Query error rate	<0.1%	Application error logging

14.1.2. Index Quality¶

Metric	Target	Measurement Method
Embedding coverage	>99% of toponyms	Field existence query
Cross-reference coverage	>50% of places	Relations field analysis
Duplicate rate	<1%	Clustering analysis

14.1.3. Training Data Quality¶

Metric	Target	Measurement Method
Training candidate coverage	>50% of languages	Language distribution analysis
Cluster purity	>90%	Manual spot-check of sample clusters
Triplet validity	>95%	Validation against known equivalents

14.1.4. Operational¶

Metric	Target	Measurement Method
Index uptime	>99.9%	Cluster health monitoring
Snapshot success rate	100%	Snapshot status API
Reindex duration	<24 hours	Job timing logs
Recovery time objective	<1 hour	Restore drill timing

14.2. User Experience Metrics¶

14.2.1. Search Quality¶

Metric	Target	Measurement Method
Relevant results in top 10	>80%	User evaluation study
Cross-lingual match success	>70%	Curated test queries
Historical variant match	>60%	Curated test queries
Typo tolerance	>90% for 1-2 char errors	Synthetic typo test set

14.2.2. User Satisfaction¶

Metric	Target	Measurement Method
Search success rate	>90%	“No results” rate reduction
Click-through rate	Improvement vs baseline	Analytics tracking
User feedback score	>4/5	Survey responses

14.3. Research Impact¶

14.3.1. Data Contribution¶

Deliverable	Target
Trained Siamese BiLSTM model	Open-source release
Training data (triplets)	Publicly available
Processing pipeline	Documented and reproducible
Evaluation test set	Published for benchmarking

14.3.2. Scholarly Output¶

Deliverable	Target
Methodology paper	Peer-reviewed publication
Technical documentation	Comprehensive and maintained
Workshop/tutorial	Conference presentation