Update README.md

README.md

@@ -3,3 +3,93 @@ license: other
 license_name: open-data-attribution-training-disclosure-license-odatl-1.0
 license_link: LICENSE
 ---
+
+# Code-Syntax-Expanded
+
+A **massive, high-quality synthetic dataset** for training LLMs to identify and correct syntax errors across **33 programming languages**. Contains **5+ million unique examples** (~1.1 GB) with English explanations – no artificial padding, no duplicate rows.
+
+---
+
+## 📊 Dataset Overview
+
+| Property | Value |
+|----------|-------|
+| **Total rows** | 5,000,000+ |
+| **File size** | ~1.1 GB (uncompressed CSV) |
+| **Languages** | 33 |
+| **Unique templates** | 160+ error patterns |
+| **Format** | CSV (4 columns) |
+| **License** | ODA-TL v1.0 |
+
+---
+
+## 📁 Dataset Structure
+
+Each row contains:
+
+| Column | Description |
+|--------|-------------|
+| `wrong_code` | Code snippet containing a syntax error |
+| `correct_code` | Corrected version of the snippet |
+| `explanation` | Concise English explanation of the error and fix |
+| `language` | Programming language (e.g., `Python`, `JavaScript`, `Rust`) |
+
+---
+
+## 🧠 Languages Covered
+
+### General Purpose
+Python, JavaScript, TypeScript, Java, C#, C++, Rust, Go, Ruby, PHP, Perl, Swift, Kotlin, R, MATLAB, Scala, Lua, Dart
+
+### Web Technologies
+HTML, CSS
+
+### Database
+SQL (MySQL/PostgreSQL-style)
+
+### Shell & Scripting
+Bash, PowerShell
+
+### Markup & Configuration
+YAML, JSON, XML, Markdown
+
+### Backend & Frameworks
+Node.js (Express, fs, JWT, bcrypt, Mongoose)
+
+---
+
+## 📈 Dataset Statistics
+
+| Language | Examples (approximate) | Key Error Types |
+|----------|------------------------|-----------------|
+| Python | 350,000+ | Missing colons, indentation, `==` vs `=`, imports |
+| JavaScript | 300,000+ | Missing parentheses, `===` vs `==`, const reassignment |
+| Rust | 200,000+ | Borrow checker, moves, mutable references |
+| Java | 250,000+ | Semicolons, type mismatches, array bounds |
+| SQL | 200,000+ | Missing commas, WHERE typos, quoting |
+| HTML/CSS | 250,000+ | Nesting, self-closing tags, attribute quoting |
+| Others | 3,200,000+ | Language-specific syntax rules |
+
+---
+
+## 🎯 Use Cases
+
+- **Fine-tuning LLMs** for code correction and syntax repair
+- **Building code review assistants** that detect common mistakes
+- **Teaching programming** with a massive bank of error/fix examples
+- **Benchmarking** model understanding of language-specific syntax
+- **Creating educational tools** for learning programming languages
+
+---
+
+## 💡 Example Entries
+
+| wrong_code | correct_code | explanation | language |
+|------------|--------------|-------------|----------|
+| `if x > 5\n    print('hello')` | `if x > 5:\n    print('hello')` | Colon missing after if. | Python |
+| `console.log('world'` | `console.log('world')` | Close parenthesis. | JavaScript |
+| `let mut x=5; let r1=&mut x; let r2=&mut x;` | `let mut x=5; { let r1=&mut x; } let r2=&mut x;` | Only one mutable borrow allowed. | Rust |
+| `SELECT name age FROM users;` | `SELECT name, age FROM users;` | Missing comma between columns. | SQL |
+| `<p>Hello <b>world!</p></b>` | `<p>Hello <b>world!</b></p>` | Improper nesting of tags. | HTML |
+
+---