README.md

🌍 Multilingual Translator + Semantic Search (Enhanced)

This project is a smart multilingual translator web app that offers:

• ✅ Automatic language detection
• 🌐 High-quality translation between Indian and foreign languages
• 🧠 Semantic search to find similar Sanskrit-based concepts
• 📊 Optional BLEU score evaluation (with human reference)
• 📄 Downloadable report summarizing the output
• 🚫 Input length handling to avoid translation errors

Developed using Hugging Face Transformers, Sentence Transformers, FAISS, and Gradio — and deployable to Hugging Face Spaces.

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⚠️ Input Limit Notice

Please enter up to 3 lines or 2000 characters maximum.

• If input is too long, the app will show an error and skip translation.

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🚀 Live Demo

🔗 Click here to try the app on Hugging Face Spaces

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🔧 Features

Feature	Description
Language Detection	Auto-identifies input language using xlm-roberta-base-language-detection
Translation	Uses Facebook’s NLLB-200-distilled-600M model
Semantic Search	Finds similar Sanskrit concepts using Sentence Transformers + FAISS
BLEU Score	Optional evaluation metric (if human reference is provided)
Semantic Plot	Horizontal bar chart for top 3 semantic similarity scores
Download Report	Creates a .txt file (includes all outputs + BLEU score)
Error Handling	Graceful messages for empty or long input

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🌐 Supported Languages

Code	Language
eng_Latn	English
hin_Deva	Hindi
tam_Taml	Tamil
tel_Telu	Telugu
san_Deva	Sanskrit
fra_Latn	French
spa_Latn	Spanish
deu_Latn	German
jpn_Jpan	Japanese
zho_Hans	Chinese
arb_Arab	Arabic

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📄 Downloadable Report

The app generates a .txt file containing:

• Detected source language
• Translated output
• Semantic matches (with similarity scores)
• BLEU score (if a human reference translation is given)

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🚧 Future Enhancements

• 🎙️ Speech-to-text input support
• 🔊 Text-to-speech audio output
• 📸 OCR: Translate text from uploaded images
• 🆕 Add more Indian languages and transliteration features

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👩‍💻 Author

Jeevitha Meenakshisundaram
M.Sc. Data Science, SASTRA University

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📜 License

This project is licensed under the MIT License.