优化参数

app/config/dbn/rainfall_dbn_graph.yaml

@@ -142,22 +142,23 @@ node_states:
   duration: [short, medium, long]
   accum_rain: [trace, light, moderate, heavy, extreme]
 
-  # 环境层（离散字段状态名与数据库编码一一对应，连续字段用工程分级）
-  elevation: [basin, plain_urban, transition, low_mountain, mid_mountain, high_mountain]
-  slope: [flat, gentle, moderate, steep, very_steep, extreme_steep]
-  aspect: [north, east, south, west, north_loop]
+  # 环境层（离散字段状态名与数据库编码一一对应，连续字段用分位数分箱）
+  # 基于1201个样本的实际数据分布，2026-06-06更新
+  elevation: [very_low, low, medium, high, very_high]
+  slope: [very_low, low, medium, high, very_high]
+  aspect: [flat, north, east, south, west]
   soil_type: [ultisol, entisol, fluvo_aquic, yellow_brown]
   lithology: [acid_rock, basic_rock, carbonate, metamorphic, mixed_clastic, terrigenous, unconsolidated]
   landuse: [forest, farmland, urban, water, barren]
   terrain: [mountain, plain, deep_valley, hill, gentle_hill, low_mountain, flat_plain]
-  impervious: [low, medium, high]
-  ndvi: [water, bare, sparse, moderate, dense, very_dense]
-  sand_content: [low, medium, high]
-  ph: [acidic, neutral, alkaline]
-  soil_moisture: [dry, moist, wet, saturated]
-  organic_carbon: [low, medium, high]
-  dist_to_river: [very_close, close, moderate, far]
-  dist_to_fault: [very_close, close, moderate, far]
+  impervious: [none, very_low, low, medium, high]
+  ndvi: [very_low, low, medium, high, very_high]
+  sand_content: [very_low, low, medium, high, very_high]
+  ph: [very_low, low, medium, high, very_high]
+  soil_moisture: [very_low, low, medium, high]
+  organic_carbon: [very_low, low, medium, high, very_high]
+  dist_to_river: [very_close, close, moderate, far, very_far]
+  dist_to_fault: [very_close, close, moderate, far, very_far]
   pipe_density: [none, low, medium, high]
 
   # 灾害层