# 問題一：隨機森林回歸from?sklearn.ensemble?import?RandomForestRegressormodel_rf = RandomForestRegressor()model_rf.fit(X_train, y_train)# 問題二：LSTM時間序列預測from?tensorflow.keras.models?import?Sequentialmodel_lstm = Sequential()model_lstm.add(LSTM(50, input_shape=(window_size, n_features)))model_lstm.add(Dense(60?*?2)) ?# 預測60步，每步兩個濃度# 問題三：時間點預測def?predict_event_time(predictions, k1, k2):? ??for?i, (so2, h2s)?in?enumerate(predictions):? ? ? ??if?so2 > k1?or?h2s > k2:? ? ? ? ? ??return?i +?10??# t+10為起始點? ??return?None

2025年第十八屆“認證杯”數學中國數學建模網絡挑戰賽B題完整word論文+代碼+結果https://download.csdn.net/download/qq_52590045/905927492025年第十八屆“認證杯”數學中國數學建模網絡挑戰賽C題完整word論文+代碼+結果https://download.csdn.net/download/qq_52590045/90592761

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