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Add rescore index for ANN queries

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Add rescore index type: stores full-precision float vectors in a rowid-keyed
shadow table, quantizes to int8 for fast initial scan, then rescores top
candidates with original vectors. Includes config parser, shadow table
management, insert/delete support, KNN integration, compile flag
(SQLITE_VEC_ENABLE_RESCORE), fuzz targets, and tests.
This commit is contained in:
Alex Garcia 2026-03-29 19:45:54 -07:00
parent bf2455f2ba
commit ba0db0b6d6
19 changed files with 3378 additions and 8 deletions
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Makefile
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@ -202,7 +202,7 @@ test-loadable-watch:
watchexec --exts c,py,Makefile --clear -- make test-loadable
test-unit:
$(CC) -DSQLITE_CORE -DSQLITE_VEC_TEST tests/test-unit.c sqlite-vec.c vendor/sqlite3.c -I./ -Ivendor -o $(prefix)/test-unit && $(prefix)/test-unit
$(CC) -DSQLITE_CORE -DSQLITE_VEC_TEST -DSQLITE_VEC_ENABLE_RESCORE tests/test-unit.c sqlite-vec.c vendor/sqlite3.c -I./ -Ivendor -o $(prefix)/test-unit && $(prefix)/test-unit
fuzz-build:
$(MAKE) -C tests/fuzz all