chore: change default walker for HALK with MUTAG

Author: rememberYou

examples/mutag.py

@@ -8,7 +8,7 @@
 from pyrdf2vec import RDF2VecTransformer
 from pyrdf2vec.embedders import Word2Vec
 from pyrdf2vec.graphs import KG
-from pyrdf2vec.walkers import RandomWalker
+from pyrdf2vec.walkers import HALKWalker
 
 # Ensure the determinism of this script by initializing a pseudo-random number.
 RANDOM_STATE = 22
@@ -32,7 +32,7 @@
     # Extract all walks with a maximum depth of 2 for each entity using two
     # processes and use a random state to ensure that the same walks are
     # generated for the entities.
-    walkers=[RandomWalker(2, None, n_jobs=1, random_state=RANDOM_STATE)],
+    walkers=[HALKWalker(2, None, n_jobs=2, random_state=RANDOM_STATE)],
     verbose=1,
 ).fit_transform(
     KG(