Rename metric to not use illegal symbol @

slim/eval_image_classifier.py

@@ -153,7 +153,7 @@ def main(_):
     # Define the metrics:
     names_to_values, names_to_updates = slim.metrics.aggregate_metric_map({
         'Accuracy': slim.metrics.streaming_accuracy(predictions, labels),
-        'Recall@5': slim.metrics.streaming_recall_at_k(
+        'Recall_5': slim.metrics.streaming_recall_at_k(
             logits, labels, 5),
     })