{"name":"HoneyChain Beehive Harvest Window Predictor","version":"yield-production-v1","target":"days_to_flow_end (Expected Harvest Window in days)","algorithm":"LightGBM Regressor (LGBMRegressor)","hyperparameters":{"boosting_type":"gbdt","class_weight":"None","colsample_bytree":"0.8","importance_type":"split","learning_rate":"0.05","max_depth":"4","min_child_samples":"10","min_child_weight":"0.001","min_split_gain":"0.0","n_estimators":"300","n_jobs":"None","num_leaves":"15","objective":"None","random_state":"42","reg_alpha":"0.0","reg_lambda":"0.0","subsample":"0.8","subsample_for_bin":"200000","subsample_freq":"0","verbose":"-1"},"minimum_history_days":6,"recommended_history_days":14,"features":["weight","weight_change_1d","gain_rate_3d","gain_rate_7d","gain_rate_14d","weight_std_3d","weight_std_7d","weight_std_14d","gain_accel","weight_vs_14d","flow","flow_roll_3d","flow_roll_7d","flow_abs_7d","temperature","temp_roll_7d","temp_roll_14d","humidity","humid_roll_7d","doy_sin","doy_cos","days_into_flow"],"performance_metrics":{"validation_strategy":"Leave-One-Flow-Out Cross-Validation (LOFO-CV)","mean_absolute_error_days":5.01,"baseline_mae_days":6.31,"typical_error_margin_days":5,"worst_case_error_days":19.8,"r2_score":0.14},"operational_guidance":{"inference_frequency":"Run once per day at 23:59 per active hive","display_recommendation":"Always display the harvestWindowRange rather than raw days","flow_detection_threshold":">= 0.20 kg/day 7-day average gain marks flow start","flow_termination_threshold":"< 0.05 kg/day 7-day average gain marks flow end"}}