add blanc metric

app.py

@@ -1,6 +1,10 @@
 import streamlit as st
 import PyPDF2
-from extractive_model import summarize_with_textrank  # Renamed function
+from extractive_model import summarize_with_textrank
+from blanc import BlancHelp
+
+# Initialize BLANC
+blanc_help = BlancHelp()
 
 # Set page to wide mode
 st.set_page_config(layout="wide")
@@ -47,6 +51,9 @@ def main():
             if radio_selection == "Extractive":
                 summary = summarize_with_textrank(file_content)
                 st.session_state.summary = summary
+                # Perform BLANC evaluation
+                blanc_help_score = blanc_help.eval_once(file_content, st.session_state.summary)
+                st.session_state.blanc_help = blanc_help_score
 
             # Perform extractive summarization
             if radio_selection == "Abstractive":
@@ -59,6 +66,7 @@ def main():
         st.write("Summary:")
         if 'summary' in st.session_state:
             st.write(st.session_state.summary)
+            st.write(f"BLANC-Help: {st.session_state.blanc_help}")
 
 if __name__ == "__main__":
     main()