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--- |
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license: cc-by-nc-nd-4.0 |
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task_categories: |
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- text-generation |
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- text-classification |
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language: |
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- ja |
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tags: |
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- nlp |
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- dialogue |
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- dialogue-corpus |
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- dialogue-system |
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size_categories: |
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- 100M<n<1B |
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--- |
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<div align="center"> |
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<img src="./kokorochat_logo_.png" alt="KokoroChat Logo" width="500"/> |
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</div> |
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<!-- [](https://drive.google.com/file/d/1T6XgvZii8rZ1kKLgOUGqm3BMvqQAvxEM/view?usp=sharing) --> |
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[](https://creativecommons.org/licenses/by-nc-nd/4.0/) |
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[](https://huggingface.co/UEC-InabaLab/Llama-3.1-KokoroChat-High) |
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[](https://github.com/UEC-InabaLab/KokoroChat) |
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[](https://aclanthology.org/2025.acl-long.608/) |
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# KokoroChat: A Japanese Psychological Counseling Dialogue Dataset Collected via Role-Playing by Trained Counselors |
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**KokoroChat** is the largest human-collected Japanese psychological counseling dialogue dataset to date (as of June 2025). It was created through role-playing between trained counselors and includes rich, long-form dialogues and detailed client feedback on counseling quality. The dataset supports research on empathetic response generation, dialogue evaluation, and mental health-oriented language modeling. |
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This work has been **accepted to the main conference of ACL 2025**. |
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📄 [View Paper](https://aclanthology.org/2025.acl-long.608/) |
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--- |
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## 🌟 Key Features |
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- 6,589 dialogues, collected between 2020 and 2024 |
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- Avg. 91.2 utterances per dialogue |
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- 480 trained counselors simulating online text-based counseling sessions |
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- 20-dimension Likert-scale client feedback for every session |
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- Broad topic coverage: mental health, school, family, workplace, romantic issues, etc. |
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--- |
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## 📊 Dataset Statistics |
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| Category | Total | Counselor | Client | |
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|----------------------------|-----------|-----------|-----------| |
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| **# Dialogues** | 6,589 | - | - | |
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| **# Speakers** | 480 | 424 | 463 | |
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| **# Utterances** | 600,939 | 306,495 | 294,444 | |
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| **Avg. utterances/dialogue** | 91.20 | 46.52 | 44.69 | |
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| **Avg. length/utterance** | 28.39 | 35.84 | 20.63 | |
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--- |
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## 📁 Dataset Structure |
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Each sample contains: |
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- A full counseling dialogue with role labels (counselor / client) and message timestamps |
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- Structured client feedback on 20 dimensions (0–5 Likert scale) |
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- Flags for ethical concern checks (optional) |
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- Predicted topic label (automatically annotated by GPT-4o-mini) |
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👉 See the `kokorochat_dialogues` folder for the complete dataset. |
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--- |
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## 🤖 Models Trained on KokoroChat |
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The following models were fine-tuned on subsets of the KokoroChat dataset with different feedback score ranges: |
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- [**Llama-3.1-KokoroChat-Low**](https://huggingface.co/UEC-InabaLab/Llama-3.1-KokoroChat-Low): |
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Fine-tuned on **3,870 dialogues** with client feedback scores **< 70** |
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- [**Llama-3.1-KokoroChat-High**](https://huggingface.co/UEC-InabaLab/Llama-3.1-KokoroChat-High): |
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Fine-tuned on **2,601 dialogues** with scores between **70 and 98** |
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- [**Llama-3.1-KokoroChat-Full**](https://huggingface.co/UEC-InabaLab/Llama-3.1-KokoroChat-Full): |
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Fine-tuned on **6,471 dialogues** (excluding 118 test samples with score ≥ 99), with scores **≤ 98** |
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- 🤖 **Score Prediction Model**: |
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- [Llama-3.1-KokoroChat-ScorePrediction](https://huggingface.co/UEC-InabaLab/Llama-3.1-KokoroChat-ScorePrediction): fine-tuned to **predict client feedback scores** based on the full counseling dialogue history. |
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--- |
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## 📄 Citation |
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If you use this dataset, please cite the following paper: |
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```bibtex |
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@inproceedings{qi2025kokorochat, |
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title = {KokoroChat: A Japanese Psychological Counseling Dialogue Dataset Collected via Role-Playing by Trained Counselors}, |
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author = {Zhiyang Qi and Takumasa Kaneko and Keiko Takamizo and Mariko Ukiyo and Michimasa Inaba}, |
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booktitle = {Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics}, |
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year = {2025}, |
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url = {https://github.com/UEC-InabaLab/KokoroChat} |
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} |
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``` |
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--- |
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## ⚖️ License |
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KokoroChat is released under the [**Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)**](https://creativecommons.org/licenses/by-nc-nd/4.0/) license. |
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[![CC BY-NC-ND 4.0][cc-by-nc-nd-image]][cc-by-nc-nd] |
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[cc-by-nc-nd]: http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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[cc-by-nc-nd-image]: https://licensebuttons.net/l/by-nc-nd/4.0/88x31.png |
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[cc-by-nc-nd-shield]: https://img.shields.io/badge/License-CC%20BY--NC--ND%204.0-lightgrey.svg |
