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Add DiskANN index for vec0 virtual table

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Add DiskANN graph-based index: builds a Vamana graph with configurable R
(max degree) and L (search list size, separate for insert/query), supports
int8 quantization with rescore, lazy reverse-edge replacement, pre-quantized
query optimization, and insert buffer reuse. Includes shadow table management,
delete support, KNN integration, compile flag (SQLITE_VEC_ENABLE_DISKANN),
release-demo workflow, fuzz targets, and tests. Fixes rescore int8
quantization bug.
This commit is contained in:
Alex Garcia 2026-03-29 19:46:53 -07:00
parent e2c38f387c
commit 575371d751
23 changed files with 6550 additions and 135 deletions
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tests/fuzz/diskann.dict Normal file
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"neighbor_quantizer"
"binary"
"int8"
"n_neighbors"
"search_list_size"
"search_list_size_search"
"search_list_size_insert"
"alpha"
"="
","