Update duckdb index files

.gitattributes

@@ -67,3 +67,4 @@ in_center_single_out_center_single/train/index.duckdb filter=lfs diff=lfs merge=
 in_center_single_out_center_single/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 in_distribute_four_out_center_single/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 in_distribute_four_out_center_single/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+in_distribute_four_out_center_single/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

in_distribute_four_out_center_single/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5d3a1df5976f32a714f68f441ad2fe6d6b860956e1fab55ccdb506aebcf5773f
+size 208154624