ZAIC 2026 LifeMate: Qwen3-4B LoRA adapter

LoRA adapter (r=16, alpha=32, 1 epoch, lr 1e-4, seed 42) for Qwen/Qwen3-4B-Instruct-2507, used as a Vietnamese tool-calling agent. Trained on the LifeMate train split minus a 200-sample dev hold-out, with 50% of user turns replaced by Qwen3-ASR-0.6B transcripts.

Setup	Input text	Dev score (official metric, 200 samples)
Qwen3-4B base, prompt + guard + 4-shot	Qwen3-ASR-0.6B	25.14
Qwen3-4B + this LoRA	PhoWhisper-large	34.71

System budget: Qwen3-4B (4.02B) + PhoWhisper-large (1.55B) = 5.57B parameters.

Serve with vLLM: --enable-lora --lora-modules lifemate=<path> --max-lora-rank 16.