Update duckdb index files

.gitattributes

@@ -54,3 +54,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 Liuyu--sentiment-classification/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Liuyu--sentiment-classification/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+Liuyu--sentiment-classification/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

Liuyu--sentiment-classification/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:01156da15e71247f0854e98b29b83d826488825f1a0c0c469e30973d056d25c9
+size 12857344