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Added support for sparse vectors

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This commit is contained in:
Andrew Kane
2023-11-05 18:12:19 -08:00
parent a01a72d812
commit 492ae1225c
13 changed files with 1147 additions and 36 deletions
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89
sql/vector.sql
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@@ -290,3 +290,92 @@ CREATE OPERATOR CLASS vector_cosine_ops
OPERATOR 1 <=> (vector, vector) FOR ORDER BY float_ops,
FUNCTION 1 vector_negative_inner_product(vector, vector),
FUNCTION 2 vector_norm(vector);
--- svector type
CREATE TYPE svector;
CREATE FUNCTION svector_in(cstring, oid, integer) RETURNS svector
AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE FUNCTION svector_out(svector) RETURNS cstring
AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE FUNCTION svector_typmod_in(cstring[]) RETURNS integer
AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE FUNCTION svector_recv(internal, oid, integer) RETURNS svector
AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE FUNCTION svector_send(svector) RETURNS bytea
AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE TYPE svector (
INPUT = svector_in,
OUTPUT = svector_out,
TYPMOD_IN = svector_typmod_in,
RECEIVE = svector_recv,
SEND = svector_send,
STORAGE = external
);
-- svector functions
CREATE FUNCTION l2_distance(svector, svector) RETURNS float8
AS 'MODULE_PATHNAME', 'svector_l2_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE FUNCTION inner_product(svector, svector) RETURNS float8
AS 'MODULE_PATHNAME', 'svector_inner_product' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE FUNCTION cosine_distance(svector, svector) RETURNS float8
AS 'MODULE_PATHNAME', 'svector_cosine_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE FUNCTION jaccard_distance(svector, svector) RETURNS float8
AS 'MODULE_PATHNAME', 'svector_jaccard_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-- svector private functions
CREATE FUNCTION svector_l2_squared_distance(svector, svector) RETURNS float8
AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE FUNCTION svector_negative_inner_product(svector, svector) RETURNS float8
AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-- svector cast functions
CREATE FUNCTION svector(svector, integer, boolean) RETURNS svector
AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE FUNCTION vector_to_svector(vector, integer, boolean) RETURNS svector
AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
CREATE FUNCTION svector_to_vector(svector, integer, boolean) RETURNS vector
AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-- svector casts
CREATE CAST (svector AS svector)
WITH FUNCTION svector(svector, integer, boolean) AS IMPLICIT;
CREATE CAST (svector AS vector)
WITH FUNCTION svector_to_vector(svector, integer, boolean) AS IMPLICIT;
CREATE CAST (vector AS svector)
WITH FUNCTION vector_to_svector(vector, integer, boolean) AS IMPLICIT;
-- svector operators
CREATE OPERATOR <-> (
LEFTARG = svector, RIGHTARG = svector, PROCEDURE = l2_distance,
COMMUTATOR = '<->'
);
CREATE OPERATOR <#> (
LEFTARG = svector, RIGHTARG = svector, PROCEDURE = svector_negative_inner_product,
COMMUTATOR = '<#>'
);
CREATE OPERATOR <=> (
LEFTARG = svector, RIGHTARG = svector, PROCEDURE = cosine_distance,
COMMUTATOR = '<=>'
);