Update README.md

README.md

@@ -25,6 +25,12 @@ to lead to substantial improvements in the upper bound.
 This dataset is a mixture of enriched weaving patterns and
 non-weaving pattern matrices with \\(\{1, 2, \dots, 6\}\\)-entries.
 
+## Updates
+
+- 2026-01-15: We updated both the train and test files to eliminate an error where weaving
+  patterns and non-weaving patterns had slightly different representations. This led to high accuracy in models
+  who learned these patterns rather than mathematically meaningful differences.
+
 ## Dataset Details
 
 Each matrix is stored on a single line in row-major format. For instance,