### Compute metric: Avg number of Interests seen per content name
### normalized by the number of nodes in the shortest path
- content_name_count = len(content_names.values())
+ content_name_count = len(content_names)
nodes_in_shortest_path = len(shortest_path) - 1
metric = interest_count / (float(content_name_count) * float(nodes_in_shortest_path))