Update app.py

app.py

@@ -1,35 +1,33 @@
-# homepage.py
+# app.py
 import streamlit as st
 import runpy
 
 # 1. Page config & title
-st.set_page_config(page_title="Machine Learning Models Visualization tools")
-st.title("Machine Learning Models Visualization tools")
+st.set_page_config(page_title="Machine Learning Models Visualization Hub")
+st.title("Machine Learning Models Visualization Tools")
 
 # 2. Map display names → filenames
 APPS = {
-    "Gradient Descent Visualization":          "gd_sgd_app.py",
-    "Decision Tree (each step)":                "decision_tree_steps.py",
-    "Bagging Classifier Visualization":         "bagging_classifier_viz.py",
-    "Bagging Regressor Visualization":          "bagging_regressor_viz.py",
-    "Voting Classifier Visualization":          "voting_classifier_viz.py",
-    "Voting Regressor Visualization":           "voting_regressor_viz.py",
-    "Decision Tree Visualization":              "decision_tree_viz.py",
+    "Gradient Descent Visualization":      "gd_sgd_app.py",
+    "Decision Tree (step-by-step)":        "decision_tree_steps.py",
+    "Bagging Classifier Visualization":    "bagging_classifier_viz.py",
+    "Bagging Regressor Visualization":     "bagging_regressor_viz.py",
+    "Voting Classifier Visualization":     "voting_classifier_viz.py",
+    "Voting Regressor Visualization":      "voting_regressor_viz.py",
 }
 
-# 3. See if the user clicked into one of the apps already
+# 3. Check for query‑param to run one of the apps
 params   = st.experimental_get_query_params()
 selected = params.get("app", [None])[0]
 
 if selected in APPS.values():
-    # rerun the selected app
+    # Run the selected Streamlit app in this process
     runpy.run_path(selected, run_name="__main__")
 else:
-    # 4. Otherwise show the grid of buttons
+    # 4. Otherwise show a grid of buttons
     cols = st.columns(2)
     for idx, (label, fname) in enumerate(APPS.items()):
         col = cols[idx % 2]
-        # style each button like a “box”
         if col.button(label, key=label):
-            # set query‑param and trigger rerun
+            # set the query‑param and rerun
             st.experimental_set_query_params(app=fname)