diff --git a/.gitignore b/.gitignore
index 6df8c65..1d0e276 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,7 +2,6 @@
 venv/
 .venv/
 
-data/
-res/
+*.json
 
 *.dat
diff --git a/benchmark.py b/benchmark.py
index be8132e..e8b36b3 100755
--- a/benchmark.py
+++ b/benchmark.py
@@ -3,19 +3,20 @@
 import glob
 import os
 import time
+import argparse
 from pathlib import Path
 
 from pyctbn.legacy import JsonImporter
 from pyctbn.legacy import SamplePath
 from pyctbn.legacy import StructureConstraintBasedEstimator
 
-def structure_constraint_based_estimation_example():
+def structure_constraint_based_estimation_example(network_file_path):
     Path("./data").mkdir(parents=True, exist_ok=True)
     # <read the json files in ./data path>
     read_files = glob.glob(os.path.join("./data/", "*.json"))
     # <initialize a JsonImporter object for the first file>
     importer = JsonImporter(
-        file_path=read_files[0],
+        file_path=network_file_path,
         samples_label='samples',
         structure_label='dyn.str',
         variables_label='variables',
@@ -56,4 +57,8 @@ def structure_constraint_based_estimation_example():
     # (remember to specify the path AND the .png extension)
     #se1.save_plot_estimated_structure_graph("./res/result0.png")
 
-structure_constraint_based_estimation_example()
+parser = argparse.ArgumentParser()
+parser.add_argument('filename', help="path of the network in json format")
+args = parser.parse_args()
+
+structure_constraint_based_estimation_example(args.filename)