phung1112/lab21-2A202601286-qwen35-triage-vi

Qwen3.5-4B LoRA — Vietnamese Customer Support Triage

LoRA adapter cho bài toán phân loại ticket chăm sóc khách hàng tiếng Việt thành JSON gồm bốn trường: intent, urgency, product, sentiment.

Base model

unsloth/Qwen3.5-4B

Training configuration

• —LoRA rank: 16
• —LoRA alpha: 32
• —Learning rate: 1e-4
• —Optimizer steps: 30
• —Mask mode: assistant-only
• —Target placement: text-linear

Evaluation

• —Fine-tune target: 0.970
• —Optimized-base target: 0.765
• —Fine-tune format: 1.000
• —Fine-tune regression: 0.5667
• —Optimized-base regression: 0.7578

The adapter improved target accuracy but failed the regression gate because general capability decreased by 0.1911. See submission/REPORT.md for the complete analysis.

This is a PEFT adapter, not a standalone base model.