UDTFs

UDTF	Family	Description	Official API
Vector Top-K	Selection	Select the smallest or largest values in every dense vector row.	C++ API
Brute-force kNN	Nearest Neighbors	Exact brute-force nearest-neighbor search over dense vectors.	C API
CAGRA	Nearest Neighbors	Query-local graph approximate nearest-neighbor search.	C API
IVF-Flat	Nearest Neighbors	Query-local inverted-file approximate nearest-neighbor search.	C API
IVF-PQ	Nearest Neighbors	Query-local product-quantized inverted-file nearest-neighbor search.	C API
KMeans	Cluster	K-means clustering assignments for dense vector rows.	C API
Pairwise Distance	Distance	Pairwise distance or similarity for every x and y vector row.	C API
PCA	Preprocessing	Principal-component analysis transform for dense vector rows.	C API