---
license: mit
task_categories:
- translation
language:
- en
- hi
tags:
- machine-translation
- english-hindi
- parallel-corpus
- synthetic-data
- large-scale
- nlp
- benchmark
- seq2seq
- huggingface-dataset
size_categories:
- 1M<n<10M
---
# 📘 README.md

👉 Copy everything below into your repository `README.md`

---

# English–Hindi Massive Synthetic Translation Dataset

## 🧠 Overview

This dataset is a large-scale synthetic parallel corpus for **English → Hindi machine translation**, designed to stress-test modern sequence-to-sequence models, tokenizers, and large-scale training pipelines.

The corpus contains **10 million aligned sentence pairs** generated using a high-entropy template engine with:

* 100+ subjects
* 100+ verbs
* 100+ objects
* 100+ adjectives, adverbs, metrics, conditions, and scales
* Structured bilingual phrase composition
* Deterministic alignment between English and Hindi

This produces **trillions of possible combinations**, ensuring minimal repetition even at massive scale.

---

## 📦 Dataset Structure

```
hf_translation_dataset/
 ├── train.jsonl   (8,000,000 sentence pairs)
 ├── test.jsonl    (2,000,000 sentence pairs)
 └── README.md
```

Split ratio:

* **Training:** 80%
* **Testing:** 20%

---

## 🧾 Data Format

Each line is a JSON object:

```json
{
  "id": 934221,
  "en": "AI engineer efficiently_42 build systems condition_17 metric_88 remains optimized_12 and optimized_91 scale_55",
  "hi": "एआई इंजीनियर सिस्टम को कुशलता_42 निर्माण करते हैं स्थिति_17 मेट्रिक_88 अनुकूलित_12 और अनुकूलित_91 पैमाना_55"
}
```

### Fields

| Field    | Type    | Description              |
| -------- | ------- | ------------------------ |
| `id`     | Integer | Unique sample identifier |
| `en`     | String  | English sentence         |
| `hi`     | String  | Hindi translation        |
| Encoding | UTF-8   | Unicode safe             |

---

## 📊 Dataset Characteristics

* ✔️ Total samples: **10,000,000**
* ✔️ Language pair: **English → Hindi**
* ✔️ Vocabulary size: **100+ per lexical category**
* ✔️ Combinatorial space: **>10¹⁴ unique pairs**
* ✔️ Grammar-driven generation
* ✔️ Balanced template distribution
* ✔️ Deterministic alignment
* ✔️ Streaming-friendly JSONL format

---

## 🎯 Intended Use

This dataset is suitable for:

* Machine translation benchmarking
* Seq2Seq model stress testing
* Tokenizer robustness analysis
* Curriculum learning experiments
* Large-scale distributed training validation
* Synthetic data research
* Parallel corpus augmentation

---

## ⚠️ Limitations

* Synthetic grammar (not natural conversational Hindi).
* No discourse-level coherence.
* No idiomatic expressions or cultural nuance.
* Artificial tokens (`optimized_42`, etc.) are symbolic placeholders.
* Not suitable for production translation systems.

This dataset is intended for **algorithmic benchmarking and scaling research**.

---

## 🤗 How to Load

```python
from datasets import load_dataset

dataset = load_dataset("NNEngine/your-dataset-name")
print(dataset)
```

Streaming mode:

```python
dataset = load_dataset(
    "NNEngine/your-dataset-name",
    streaming=True
)
```

---

## 📜 License

MIT License
Free for research and educational usage.

---

## ✨ Author

Created by **NNEngine** for large-scale NLP benchmarking and synthetic data research.