fixed bug

ref_seg_ger.py

@@ -252,6 +252,8 @@ class RefSeg(datasets.GeneratorBasedBuilder):
                 # split_rgbs = rgbs[index:index + self.CHUNK_SIZE]
                 # split_fonts = fonts[index:index + self.CHUNK_SIZE]
                 split_labels = labels[index:max(len(input_ids), index + self.CHUNK_SIZE)]
+                split_labels = [item for sublist in split_labels for item in sublist]
+                assert(len(split_ids) == len(split_labels))
                 #print(split_labels, len(split_labels))
                 #print(split_ids, len(split_ids))