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import streamlit as st

# Page configuration
st.set_page_config(
    layout="wide", 
    initial_sidebar_state="auto"
)

# Custom CSS for better styling
st.markdown("""

    <style>

        .main-title {

            font-size: 36px;

            color: #4A90E2;

            font-weight: bold;

            text-align: center;

        }

        .sub-title {

            font-size: 24px;

            color: #4A90E2;

            margin-top: 20px;

        }

        .section {

            background-color: #f9f9f9;

            padding: 15px;

            border-radius: 10px;

            margin-top: 20px;

        }

        .section h2 {

            font-size: 22px;

            color: #4A90E2;

        }

        .section p, .section ul {

            color: #666666;

        }

        .link {

            color: #4A90E2;

            text-decoration: none;

        }

        .benchmark-table {

            width: 100%;

            border-collapse: collapse;

            margin-top: 20px;

        }

        .benchmark-table th, .benchmark-table td {

            border: 1px solid #ddd;

            padding: 8px;

            text-align: left;

        }

        .benchmark-table th {

            background-color: #4A90E2;

            color: white;

        }

        .benchmark-table td {

            background-color: #f2f2f2;

        }

    </style>

""", unsafe_allow_html=True)

# Title
st.markdown('<div class="main-title">Introduction to XLM-RoBERTa Annotators in Spark NLP</div>', unsafe_allow_html=True)

# Subtitle
st.markdown("""

<div class="section">

    <p>XLM-RoBERTa (Cross-lingual Robustly Optimized BERT Approach) is an advanced multilingual model that extends the capabilities of RoBERTa to over 100 languages. Pre-trained on a massive, diverse corpus, XLM-RoBERTa is designed to handle various NLP tasks in a multilingual context, making it ideal for applications that require cross-lingual understanding. Below, we provide an overview of the XLM-RoBERTa annotators for these tasks:</p>

</div>

""", unsafe_allow_html=True)

st.markdown("""<div class="sub-title">Sequence Classification with XLM-RoBERTa</div>""", unsafe_allow_html=True)
st.markdown("""

<div class="section">

    <p>Sequence classification is a common task in Natural Language Processing (NLP) where the goal is to assign a label to a sequence of text, such as sentiment analysis, spam detection, or paraphrase identification.</p>

    <p><strong>XLM-RoBERTa</strong> excels at sequence classification across multiple languages, making it a powerful tool for global applications. Below is an example of how to implement sequence classification using XLM-RoBERTa in Spark NLP.</p>

    <p>Using XLM-RoBERTa for Sequence Classification enables:</p>

    <ul>

        <li><strong>Multilingual Text Classification:</strong> Classify sequences of text in multiple languages with a single model.</li>

        <li><strong>Broad Application:</strong> Apply to tasks such as sentiment analysis, spam detection, and paraphrase identification across languages.</li>

        <li><strong>Transfer Learning:</strong> Utilize pretrained XLM-RoBERTa models to leverage knowledge from extensive cross-lingual datasets.</li>

    </ul>

    <p>Advantages of using XLM-RoBERTa for Sequence Classification in Spark NLP include:</p>

    <ul>

        <li><strong>Scalability:</strong> Spark NLP is built on Apache Spark, ensuring it scales efficiently for large datasets.</li>

        <li><strong>Pretrained Excellence:</strong> Leverage state-of-the-art pretrained models to achieve high accuracy in text classification tasks.</li>

        <li><strong>Multilingual Flexibility:</strong> XLM-RoBERTa’s multilingual capabilities make it suitable for global applications, reducing the need for language-specific models.</li>

        <li><strong>Seamless Integration:</strong> Easily incorporate XLM-RoBERTa into your existing Spark pipelines for streamlined NLP workflows.</li>

    </ul>

</div>

""", unsafe_allow_html=True)

st.markdown("""<div class="sub-title">How to Use XLM-RoBERTa for Sequence Classification in Spark NLP</div>""", unsafe_allow_html=True)
st.markdown("""

<div class="section">

<p>To leverage XLM-RoBERTa for sequence classification, Spark NLP provides an intuitive pipeline setup. The following example shows how to use XLM-RoBERTa for sequence classification tasks such as sentiment analysis, paraphrase detection, or categorizing text sequences into predefined classes. XLM-RoBERTa’s multilingual training enables it to perform sequence classification across various languages, making it a powerful tool for global NLP tasks.</p>

</div>

""", unsafe_allow_html=True)

# Code Example
st.code('''

from sparknlp.base import *

from sparknlp.annotator import *

from pyspark.ml import Pipeline

        

documentAssembler = DocumentAssembler() \\

    .setInputCol("text") \\

    .setOutputCol("document")



tokenizer = Tokenizer() \\

    .setInputCols("document") \\

    .setOutputCol("token")



seq_classifier = XlmRoBertaForSequenceClassification.pretrained("xlmroberta_classifier_base_mrpc","en") \\

    .setInputCols(["document", "token"]) \\

    .setOutputCol("class")



pipeline = Pipeline(stages=[documentAssembler, tokenizer, seq_classifier])



data = spark.createDataFrame([["PUT YOUR STRING HERE"]]).toDF("text")



result = pipeline.fit(data).transform(data)

result.select("class.result").show(truncate=False)

''', language='python')

st.text("""

+-------+

|result |

+-------+

|[True] |

+-------+

""")

# Model Info Section
st.markdown('<div class="sub-title">Choosing the Right Model</div>', unsafe_allow_html=True)
st.markdown("""

<div class="section">

    <p>The XLM-RoBERTa model used here is pretrained and fine-tuned for sequence classification tasks such as paraphrase detection. It is available in Spark NLP, providing high accuracy and multilingual support.</p>

    <p>For more information about the model, visit the <a class="link" href="https://huggingface.co/xlm-roberta-base" target="_blank">XLM-RoBERTa Model Hub</a>.</p>

</div>

""", unsafe_allow_html=True)

# References Section
st.markdown('<div class="sub-title">References</div>', unsafe_allow_html=True)
st.markdown("""

<div class="section">

    <ul>

        <li><a class="link" href="https://arxiv.org/abs/1911.02116" target="_blank">XLM-R: Cross-lingual Pre-training</a></li>

        <li><a class="link" href="https://huggingface.co/xlm-roberta-base" target="_blank">XLM-RoBERTa Model Overview</a></li>

    </ul>

</div>

""", unsafe_allow_html=True)

# Footer
st.markdown("""

<div class="section">

    <ul>

        <li><a class="link" href="https://sparknlp.org/" target="_blank">Official Website</a>: Documentation and examples</li>

        <li><a class="link" href="https://join.slack.com/t/spark-nlp/shared_invite/zt-198dipu77-L3UWNe_AJ8xqDk0ivmih5Q" target="_blank">Slack</a>: Live discussion with the community and team</li>

        <li><a class="link" href="https://github.com/JohnSnowLabs/spark-nlp" target="_blank">GitHub</a>: Bug reports, feature requests, and contributions</li>

        <li><a class="link" href="https://medium.com/spark-nlp" target="_blank">Medium</a>: Spark NLP articles</li>

        <li><a class="link" href="https://www.youtube.com/channel/UCmFOjlpYEhxf_wJUDuz6xxQ/videos" target="_blank">YouTube</a>: Video tutorials</li>

    </ul>

</div>

""", unsafe_allow_html=True)

st.markdown('<div class="sub-title">Quick Links</div>', unsafe_allow_html=True)

st.markdown("""

<div class="section">

    <ul>

        <li><a class="link" href="https://sparknlp.org/docs/en/quickstart" target="_blank">Getting Started</a></li>

        <li><a class="link" href="https://nlp.johnsnowlabs.com/models" target="_blank">Pretrained Models</a></li>

        <li><a class="link" href="https://github.com/JohnSnowLabs/spark-nlp/tree/master/examples/python/annotation/text/english" target="_blank">Example Notebooks</a></li>

        <li><a class="link" href="https://sparknlp.org/docs/en/install" target="_blank">Installation Guide</a></li>

    </ul>

</div>

""", unsafe_allow_html=True)