---
language:
- code
tags:
- code
- c++
- fill-in-the-middle
- fim
- autocomplete
- code-completion
size_categories:
- 10K<n<100K
task_categories:
- text-generation
pretty_name: fim-dataset
---

# fim-dataset

A Fill-in-the-Middle (FIM) dataset for code autocompletion.

## Dataset Description

This dataset is designed for training code autocompletion models using the Fill-in-the-Middle (FIM) approach.
The dataset contains code snippets formatted with FIM special tokens:
- `<fim_prefix>`: Code before the completion point
- `<fim_suffix>`: Code after the completion point  
- `<fim_middle>`: The code to be completed

## Dataset Structure

### Data Fields

- `text`: The formatted FIM instruction containing prefix, suffix, and middle tokens

### Data Splits

| Split | Examples |
|-------|----------|
| train | 42,922 |
| validation | 2,259 |

## Usage

```python
from datasets import load_dataset

# Load the dataset
dataset = load_dataset("KrzTyb/fim-dataset")

# Access train and validation splits
train_data = dataset["train"]
val_data = dataset["validation"]

# Example: Print first training example
print(train_data[0]["text"])
```

## Training

This dataset can be used to fine-tune code language models for autocompletion:

```python
from transformers import AutoModelForCausalLM, AutoTokenizer, Trainer
from datasets import load_dataset

# Load model and tokenizer
model = AutoModelForCausalLM.from_pretrained("Qwen/Qwen2.5-Coder-0.5B")
tokenizer = AutoTokenizer.from_pretrained("Qwen/Qwen2.5-Coder-0.5B")

# Add FIM tokens
fim_tokens = ["<fim_prefix>", "<fim_suffix>", "<fim_middle>", "<fim_pad>"]
tokenizer.add_special_tokens({"additional_special_tokens": fim_tokens})
model.resize_token_embeddings(len(tokenizer))

# Load dataset
dataset = load_dataset("KrzTyb/fim-dataset")

# Train (see full training script for details)
trainer = Trainer(
    model=model,
    train_dataset=dataset["train"],
    eval_dataset=dataset["validation"],
    # ... other training arguments
)
trainer.train()
```

## Citation

If you use this dataset, please cite:

```bibtex
@dataset{KrzTyb_fim-dataset},
  title={fim-dataset},
  author={Dataset Creator},
  year={2025},
  publisher={Hugging Face},
  howpublished={\url{https://huggingface.co/datasets/KrzTyb/fim-dataset}}
}
```

## License

Please specify the license for your dataset.