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+user_model:
+ item_dim: 256
+ user_dim: 256
+ beta_long: 0.1 # Enable personalization for Day 4
+ beta_short: 0.3
+ tau: 1.0
+ preference_extractor_name: qwen3_0_6b_sft # Switch to new extractor
+ rl:
+ eta_long: 1.0e-3
+ eta_short: 5.0e-3
+ ema_alpha: 0.05
+ short_decay: 0.1
+
+llm_name: llama_8b # Switch backend to Llama 3.1