A log-based 'conjugate graph' added to a standard ANN index redirects stuck searches to true nearest neighbors, improving Recall@1 from 41.74% to 93.42% on GIST1M with negligible query-cost increase.
High-throughput vector similarity search in knowledge graphs,
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EnhanceGraph: A Continuously Enhanced Graph-based Index for High-dimensional Approximate Nearest Neighbor Search
A log-based 'conjugate graph' added to a standard ANN index redirects stuck searches to true nearest neighbors, improving Recall@1 from 41.74% to 93.42% on GIST1M with negligible query-cost increase.