app.py

import streamlit as st
from huggingface_hub import InferenceApi
import pandas as pd
from transformers import pipeline

STYLE = """
<style>
img {
    max-width: 100%;
}

th {
    text-align: left!important
}

td {
    font-size:
}
</style>
"""

MASK_TOKEN = "<mask>"

EMOJI_MAP = {
    "anger": "😡",
    "fear": "😱",
    "happy": "😄",
    "love": "😍",
    "sadness": "😭",
    "positive": "🤗",
    "negative": "😤",
    "neutral": "😐",
}


def display_table(df: pd.DataFrame, subheader: str):
    st.subheader(subheader)
    st.table(df)


def setup():
    st.markdown(STYLE, unsafe_allow_html=True)
    st.markdown(
        """
        # 🇮🇩 Indonesian RoBERTa Base

        Demo Powered by [Indonesian RoBERTa Base](https://huggingface.co/flax-community/indonesian-roberta-base).
        """
    )
    st.sidebar.subheader("Settings")


def main():
    setup()

    analyze = st.sidebar.selectbox(
        "What should we analyze?",
        ("Emotion", "Sentiment"),
        help="Classifier model to choose for text analysis",
    )

    user_input = st.text_input(
        f"Insert a sentence to predict with a {MASK_TOKEN} token // Masukkan kalimat untuk diisi dengan token {MASK_TOKEN}",
        value=f"Gila! Hari ini aku {MASK_TOKEN} banget..",
    )

    mlm_model = "flax-community/indonesian-roberta-base"
    mask_api = InferenceApi(mlm_model)

    if analyze == "Emotion":
        sa_model = "StevenLimcorn/indonesian-roberta-base-emotion-classifier"
    elif analyze == "Sentiment":
        sa_model = "w11wo/indonesian-roberta-base-sentiment-classifier"

    sa_pipeline = pipeline("sentiment-analysis", model=sa_model, tokenizer=sa_model)

    if len(user_input) > 0:
        try:
            user_input.index(MASK_TOKEN)
        except ValueError:
            st.error(
                f"Please enter a sentence with the correct {MASK_TOKEN} token // Harap masukkan kalimat dengan token {MASK_TOKEN} yang benar"
            )
        else:
            # render masked language modeling table
            mlm_result = mask_api(inputs=user_input)

            if mlm_result == None:
                st.write("Model is loading. Please try again later...")
                return

            mlm_df = pd.DataFrame(mlm_result)
            mlm_df.drop(columns=["token", "token_str"], inplace=True)
            mlm_df_styled = mlm_df.copy(deep=False)
            mlm_df_styled = mlm_df_styled.style.set_properties(
                subset=["sequence", "score"], **{"text-align": "left"}
            )
            display_table(mlm_df_styled, "🎈 Top 5 Predictions")

            # render sentiment analysis table
            sa_df = pd.DataFrame(columns=["sequence", "label", "score"])
            for sequence in mlm_df["sequence"].values:
                sa_output = sa_pipeline(sequence)  # predict for every mlm output
                result_dict = {"sequence": sequence}
                result_dict.update(sa_output[0])
                sa_df = sa_df.append(result_dict, ignore_index=True)

            sa_df["label"] = sa_df["label"].apply(lambda x: x + " " + EMOJI_MAP[x])
            sa_df_styled = sa_df.copy(deep=False)
            sa_df_styled = sa_df_styled.style.set_properties(
                subset=["sequence", "label", "score"], **{"text-align": "left"}
            )
            display_table(sa_df_styled, "🤔 By saying that, I guess you are feeling..")


if __name__ == "__main__":
    main()