Update app.py

app.py

@@ -1,10 +1,10 @@
-from transformers import GPT2LMHeadModel, GPT2Tokenizer
+from transformers import GPT2LMHeadModel, GPT2TokenizerFast
 import streamlit as st
 
 # Load pre-trained GPT-2 model and tokenizer
 model_name = "gpt2"  # You can try other GPT-2 variants as well
-tokenizer = GPT2Tokenizer.from_pretrained(model_name)
-model = GPT2LMHeadModel.from_pretrained(model_name)
+tokenizer = GPT2TokenizerFast.from_pretrained(model_name)
+model = GPT2LMHeadModel.from_pretrained(model_name, pad_token_id=tokenizer.eos_token_id)
 
 st.title("Theme Generation App")
 
@@ -19,7 +19,7 @@ if st.button("Generate Themes"):
     input_ids = tokenizer.encode(prompt, return_tensors="pt")
 
     # Generate themes using GPT-2
-    output = model.generate(input_ids, max_length=480, num_beams=5, no_repeat_ngram_size=2, top_k=50, top_p=0.95, temperature=0.7)
+    output = model.generate(input_ids, max_length=480, num_beams=5, no_repeat_ngram_size=2, top_k=50, top_p=0.95, temperature=0.5)
 
     # Decode the generated themes
     generated_themes = tokenizer.decode(output[0], skip_special_tokens=True)