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import streamlit as st
from transformers import AutoModelForSequenceClassification, AutoTokenizer
import torch
# Set up the device (GPU or CPU)
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
# Streamlit app
def main():
st.title("Sentiment Analysis App")
st.write("Enter a text and select a pretrained model to perform sentiment analysis.")
text = st.text_area("Enter text", value="I am leaving my hometown for greener pastures.")
model_options = {
"distilbert-base-uncased-finetuned-sst-2-english": "DistilBERT (SST-2)",
"distilbert-base-uncased": "DistilBERT Uncased",
"roberta-base": "RoBERTa Base",
"albert-base-v2": "ALBERT Base v2"
# Can add more models here if desired
}
# Load the pretrained model and tokenizer
model_name = st.selectbox("Select a pretrained model", list(model_options.keys()))
model = AutoModelForSequenceClassification.from_pretrained(model_name)
tokenizer = AutoTokenizer.from_pretrained(model_name)
if st.button("Submit"):
# Perform sentiment analysis
inputs = tokenizer(text, padding=True, truncation=True, return_tensors="pt")
inputs = inputs.to(device)
outputs = model(**inputs)
logits = outputs.logits
probabilities = torch.softmax(logits, dim=1).detach().cpu().numpy()[0]
sentiment_label = "Positive" if probabilities[1] > probabilities[0] else "Negative"
st.write(f"Sentiment: {sentiment_label}")
st.write(f"Positive probability: {probabilities[1]}")
st.write(f"Negative probability: {probabilities[0]}")
if __name__ == "__main__":
main()