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Dockerfile

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+FROM python:3.10-slim
+
+# Create non-root user (required by Hugging Face)
+RUN useradd -m -u 1000 user
+USER user
+ENV PATH="/home/user/.local/bin:$PATH"
+
+WORKDIR /app
+
+COPY --chown=user requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY --chown=user . .
+
+CMD ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0"]

app.py

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+from transformers import T5Tokenizer, T5ForConditionalGeneration
+import streamlit as st
+
+tokenizer = T5Tokenizer.from_pretrained("google/flan-t5-large")
+model = T5ForConditionalGeneration.from_pretrained("google/flan-t5-large")
+
+def llm_response(prompt):
+    input_ids = tokenizer(prompt, return_tensors="pt").input_ids
+    outputs = model.generate(input_ids, max_length=300, do_sample=True, temperature=0.1)
+    return tokenizer.decode(outputs[0])[6:-4]
+
+def predict_review_sentiment(review):
+    sys_prompt = """
+        Categorize the sentiment of the customer review as positive, negative, or neutral.
+        Leverage your expertise in the aviation industry and deep understanding of industry trends to analyze the nuanced expressions and overall tone.
+        It is crucial to accurately identify neutral sentiments, which may indicate a balanced view or neutral stance towards Us Airways. Neutral expressions could involve factual statements without explicit positive or negative opinions.
+        Consider the importance of these neutral sentiments in gauging the public sentiment towards the airline company.
+        For instance, a positive sentiment might convey satisfaction with the airline's services, a negative sentiment could express dissatisfaction, while neutral sentiment may reflect an impartial observation or a neutral standpoint
+    """
+    pred_sent = llm_response(
+        """
+            {}
+            Review text: '{}'
+        """.format(sys_prompt, review)
+    )
+    return pred_sent
+
+st.title("Airline Review Sentiment Classifier")
+
+review = st.text_area("Paste a review:")
+
+if st.button("Analyse Sentiment"):
+    if review.strip():
+        result = predict_review_sentiment(review)
+        st.success(f"Predicted Sentiment: {result}")
+    else:
+        st.warning("Please enter some review text.")

requirements.txt

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+streamlit
+pandas
+numpy
+matplotlib
+seaborn
+transformers==4.40.2
+torch
+scikit-learn
+sentencepiece