Fix label2id mapping.

head_config.json

@@ -3,29 +3,29 @@
     "activation_function": "tanh",
     "head_type": "tagging",
     "label2id": {
-      "LABEL_0": 0,
-      "LABEL_1": 1,
-      "LABEL_10": 10,
-      "LABEL_11": 11,
-      "LABEL_12": 12,
-      "LABEL_13": 13,
-      "LABEL_14": 14,
-      "LABEL_15": 15,
-      "LABEL_16": 16,
-      "LABEL_17": 17,
-      "LABEL_18": 18,
-      "LABEL_19": 19,
-      "LABEL_2": 2,
-      "LABEL_20": 20,
-      "LABEL_21": 21,
-      "LABEL_22": 22,
-      "LABEL_3": 3,
-      "LABEL_4": 4,
-      "LABEL_5": 5,
-      "LABEL_6": 6,
-      "LABEL_7": 7,
-      "LABEL_8": 8,
-      "LABEL_9": 9
+      "O": 0,
+      "B-ADJP": 1,
+      "I-ADJP": 2,
+      "B-ADVP": 3,
+      "I-ADVP": 4,
+      "B-CONJP": 5,
+      "I-CONJP": 6,
+      "B-INTJ": 7,
+      "I-INTJ": 8,
+      "B-LST": 9,
+      "I-LST": 10,
+      "B-NP": 11,
+      "I-NP": 12,
+      "B-PP": 13,
+      "I-PP": 14,
+      "B-PRT": 15,
+      "I-PRT": 16,
+      "B-SBAR": 17,
+      "I-SBAR": 18,
+      "B-UCP": 19,
+      "I-UCP": 20,
+      "B-VP": 21,
+      "I-VP": 22
     },
     "layers": 1,
     "num_labels": 23