Use distilroberta-base as the scoring model

preprocessor_config.json

@@ -2,7 +2,7 @@
 	"cpnet_vocab_path": "concept.txt",
 	"pattern_path": "matcher_patterns.json",
 	"pruned_graph_path": "conceptnet_en_pruned.pickle.gz",
-	"score_model": "roberta-large",
+	"score_model": "distilroberta-base",
 	"feature_extractor_type": "GreaseLMFeatureExtractor",
 	"max_node_num": 200
 }