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Model: launch/MET-D-Qwen3-4B-ms-only
Source: Original Platform

README.md

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+---
+license: apache-2.0
+library_name: transformers
+base_model: Qwen/Qwen3-4B
+pipeline_tag: text-generation
+tags:
+  - moral reasoning
+  - value reasoning
+  - persona
+  - chain-of-thought
+language:
+  - ms
+---
+
+# Model Card for MET-D-Qwen3-4B-ms-only
+
+MET-D-Qwen3-4B-ms-only is a Malay-only moral reasoning model fine-tuned from [Qwen3-4B](https://huggingface.co/Qwen/Qwen3-4B). Given a moral dilemma, a character description, and a candidate action, it judges the action from that character's perspective and explains its judgment with an explicit chain-of-thought before answering. Moral dilemmas rarely have a single correct answer, which makes reasoning traces hard to verify. We address this by introducing a character perspective that yields a ground-truth answer, which is used for rejection-sampling the model's own reasoning traces, conditioned on a per-language, per-situation selection of theoretical grounds. Both the reasoning trace and the final answer are generated in Malay.
+
+## Model Details
+
+- **Base model:** Qwen/Qwen3-4B
+- **Task:** for a given `(situation, character description, action)` triple, answer two questions from the character's perspective:
+  1. Is the action acceptable? (`Yes` / `No` / `Ambiguous`)
+  2. Would (not) doing it be emotionally/mentally discomforting? (`Yes` / `No`)
+- **Training data:** self-generated reasoning traces, rejection-sampled against the ground truth per character perspective, in Malay only
+- **Language coverage:** this checkpoint is trained on **Malay only**. The multilingual model and other single-language variants are also available (see [Model Variants](#model-variants) below).
+- **License:** Apache 2.0 (inherited from the base model)
+
+## How to Get Started
+
+```python
+from transformers import AutoTokenizer
+from vllm import LLM, SamplingParams
+
+model_id = "launch/MET-D-Qwen3-4B-ms-only"
+tokenizer = AutoTokenizer.from_pretrained(model_id)
+llm = LLM(model=model_id, max_model_len=16384)
+
+situation = "..."            # the moral dilemma narrative
+character = "..."            # the character description
+action = "..."                # the candidate action to judge
+
+prompt = f"""Saya akan memberikan anda dilema moral dan membentangkan anda dengan penerangan watak dan soalan.
+Jawapan untuk soalan pertama hendaklah Ya, Tidak, atau Ambiguous, dan jawapan untuk soalan kedua hendaklah Ya atau Tidak.
+Anda harus mematuhi format output dengan ketat, kerana ia akan dihuraikan secara automatik.
+Pastikan anda mengeluarkan "Sebab:" dan "Jawapan:" untuk semua 2 soalan.
+
+Dilema Moral:
+{situation}
+
+Perihalan Watak:
+{character}
+
+soalan:
+1. Dari perspektif A, adakah tindakan berikut — sudah dijalankan, dianggap perlu diambil, boleh dianggap diambil, atau disoal dalam konteks situasi — dianggap boleh diterima? "{action}"
+2. Jika jawapan sebelumnya ialah ya, adakah A mendapati melakukan tindakan itu secara mental atau emosi tidak selesa? Sebaliknya, jika jawapan sebelumnya adalah tidak, adakah A mendapati tidak melakukan tindakan itu secara mental atau emosi tidak selesa?
+
+Jawapan anda:
+1. Sebab: {{Sebab}} Jawapan: {{Ya/Tidak/Ambiguous}}
+2. Sebab: {{Sebab}} Jawapan: {{Ya/Tidak}}
+"""
+
+chat_prompt = tokenizer.apply_chat_template(
+    [{"role": "user", "content": prompt}],
+    tokenize=False,
+    add_generation_prompt=True,
+)
+
+sampling_params = SamplingParams(temperature=0.0, max_tokens=2048)
+outputs = llm.generate(chat_prompt, sampling_params)
+print(outputs[0].outputs[0].text)
+```
+
+## Model Variants
+
+This checkpoint is part of the [MET collection](https://huggingface.co/collections/launch/met), which includes the same task across base models and language subsets:
+
+| Repo | Base model | Language(s) |
+|---|---|---|
+| `launch/MET-D-Qwen3-4B` | Qwen3-4B | all 6 (mixed) |
+| `launch/MET-D-Qwen3-4B-en-only` | Qwen3-4B | English only |
+| `launch/MET-D-Qwen3-4B-es-only` | Qwen3-4B | Spanish only |
+| `launch/MET-D-Qwen3-4B-hi-only` | Qwen3-4B | Hindi only |
+| `launch/MET-D-Qwen3-4B-ko-only` | Qwen3-4B | Korean only |
+| `launch/MET-D-Qwen3-4B-ms-only` | Qwen3-4B | Malay only |
+| `launch/MET-D-Qwen3-4B-zh-only` | Qwen3-4B | Chinese only |
+| `launch/MET-D-Qwen3-8B` | Qwen3-8B | all 6 (mixed) |
+| `launch/MET-D-Qwen3-8B-en-only` | Qwen3-8B | English only |
+| `launch/MET-D-Gemma3-4B` | Gemma-3-4B-it | all 6 (mixed) |
+| `launch/MET-D-Gemma3-4B-en-only` | Gemma-3-4B-it | English only |
+
+## Citation
+
+If you use this, please cite:
+
+```bibtex
+@article{lee2026met,
+  title={MET: Theory-Grounded and Culture-Aware Multilingual Moral Reasoning},
+  author={Lee, Ayoung and Kwon, Ryan and Zhang, Yunxiang and Liu, Yuxuan and Railton, Peter and Wang, Lu},
+  journal={arXiv preprint arXiv:2607.11736},
+  year={2026}
+}
+```