Make conversion true id to int id in RW run (#15)

Author: pedugnat

dynnode2vec/biased_random_walk.py

@@ -145,7 +145,7 @@ def _generate_walk_simple(
 
     def run(
         self,
-        nodes: List[int],
+        nodes: List[Any],
         *,
         n_walks: int = 10,
         walk_length: int = 10,
@@ -160,6 +160,8 @@ def run(
         """
         rn = random.Random(seed)
 
+        nodes = self.convert_true_ids_to_int_ids(nodes)
+
         # weights are multiplied by inverse p and q
         ip, iq = 1.0 / p, 1.0 / q
 

dynnode2vec/dynnode2vec.py

@@ -163,11 +163,8 @@ def generate_updated_walks(
             # that changed compared to the previous time step
             delta_nodes = self.get_delta_nodes(current_graph, previous_graph)
 
-        brw = BiasedRandomWalk(current_graph)
-        delta_nodes = brw.convert_true_ids_to_int_ids(delta_nodes)
-
         # run walks for updated nodes only
-        updated_walks = brw.run(
+        updated_walks = BiasedRandomWalk(current_graph).run(
             nodes=delta_nodes,
             walk_length=self.walk_length,
             n_walks=self.n_walks_per_node,

dynnode2vec/utils.py

@@ -24,6 +24,9 @@ def generate_dynamic_graphs(
     # Create a random graph
     graph = nx.fast_gnp_random_graph(n=n_base_nodes, p=base_density)
 
+    # add one to each node to avoid the perfect case where true_ids match int_ids
+    graph = nx.relabel_nodes(graph, mapping={n: n + 1 for n in graph.nodes()})
+
     # initialize graphs list with first graph
     graphs = [graph.copy()]
 

tests/test_biased_random_walk.py

@@ -82,4 +82,4 @@ def test_run(graphs, p, q, weighted):
     random_walks = brw.run(graph.nodes(), p=p, q=q, weighted=weighted)
 
     assert all(isinstance(walk, list) for walk in random_walks)
-    assert all(n in brw.graph.nodes() for walk in random_walks for n in walk)
+    assert all(n in graph.nodes() for walk in random_walks for n in walk)