fixup! Vector Store: Add CrateDBVectorStore

crate · Dec 14, 2024 · 92c699e · 92c699e
1 parent f33e0a8
commit 92c699e
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/langchain_cratedb/vectorstores/main.py b/langchain_cratedb/vectorstores/main.py
@@ -31,7 +31,14 @@
 
 from langchain_cratedb.vectorstores.model import ModelFactory
 
-DEFAULT_DISTANCE_STRATEGY = DistanceStrategy.COSINE
+# CrateDB and Lucene currently only implement
+# similarity based on the Euclidean distance.
+#
+# > Today, when creating a FLOAT_VECTOR, it uses the default
+# > EUCLIDEAN_HNSW (L2) similarity.
+# >
+# > -- https://github.com/crate/crate/issues/15768
+DEFAULT_DISTANCE_STRATEGY = DistanceStrategy.EUCLIDEAN
 
 
 VST = TypeVar("VST", bound=VectorStore)