Implemented necessity index

app.py

@@ -36,12 +36,19 @@ if uploaded_file is not None:
 
     docs = df[freeform_col].to_list()
 
-    ## 1. EXTRACT GRANT USAGE
+    ## 1. EXTRACT USAGE
 
+    """
     with st.spinner("Extracting usage with AI...", show_time=True):
         extracted_usage = extract_usage(docs)
 
     df['Usage'] = extracted_usage
 
-    st.dataframe(df)
+    st.dataframe(df[[freeform_col, 'Usage']])
+
+    """
+    ## 2. ASSIGN NECESSITY INDEX
+
+    df = df.join(df[freeform_col].apply(compute_necessity))
 
+    st.dataframe(df)