train_predict = model.predict(X_train) test_predict = model.predict(X_test) train_predict = scaler.inverse_transform(train_predict) y_train = scaler.inverse_transform([y_train]) train_predict = np.tile(train_predict, (1, 4)) #将train_predict复制4次，变为(110,4) train_predict = scaler.inverse_transform(train_predict) #进行逆归一化操作 y_train = np.tile(y_train, (1, 4)) #将y_train复制4次，变为(1, 440) y_train = scaler.inverse_transform(y_train.T) #进行逆归一化操作，并将结果reshape为(110,4) test_predict = scaler.inverse_transform(test_predict) y_test = scaler.inverse_transform([y_test])报错Traceback (most recent call last): File "C:\Users\马斌\Desktop\cnn测试\cnn改.py", line 47, in <module> train_predict = scaler.inverse_transform(train_predict) File "D:\python\python3.9.5\pythonProject\venv\lib\site-packages\sklearn\preprocessing_data.py", line 541, in inverse_transform X -= self.min_ ValueError: non-broadcastable output operand with shape (110,1) doesn't match the broadcast shape (110,4)如何修改代码

train代码.train代码。train代码

train代码train代码train代码train代码train代码train代码train代码train代码train代码train代码

tensorflow_Resnet_train_test:用于在自己的数据集上训练不同体系结构（DenseNet，ResNet，AlexNet，GoogLeNet，VGG，NiN）的代码+多GPU支持+批处理和单个图像测试支持

tensorflow_Resnet_train_test 用于在自己的数据集上训练不同体系结构（DenseNet，ResNet，AlexNet，GoogLeNet，VGG，NiN）的代码+多GPU支持+批处理和单个图像测试支持该存储库提供了一种易于使用的方法，用于在您自己的数据集上训练和测试不同的知名深度学习架构。该代码直接从磁盘加载图像。此外，还支持多GPU和传输学习，您也可以选择批量或单次测试图像。基于存储库：＃用法示例：训练：准备训练数据列表：python train_val_datalist_creater.py 培训或转移学习：python train.py 测试： python eval.py 或分批测试：准备测试数据清单： python train_val_datalist_creater.py --create_data val 批量

train注释.py

import pandas as pd import numpy as np import matplotlib.pyplot as plt import tensorflow as tf from tensorflow.keras.models import Sequential from tensorflow.keras.layers import LSTM, Dense data = pd.read_csv('车辆：274序：4结果数据.csv') x = data[['车头间距', '原车道前车速度']].values y = data['本车速度'].values train_size = int(len(x) * 0.7) test_size = len(x) - train_size x_train, x_test = x[0:train_size,:], x[train_size:len(x),:] y_train, y_test = y[0:train_size], y[train_size:len(y)] from sklearn.preprocessing import MinMaxScaler scaler = MinMaxScaler(feature_range=(0, 1)) x_train = scaler.fit_transform(x_train) x_test = scaler.transform(x_test) model = Sequential() model.add(LSTM(50, input_shape=(2, 1))) model.add(Dense(1)) model.compile(loss='mean_squared_error', optimizer='adam') history = model.fit(x_train.reshape(-1, 2, 1), y_train, epochs=100, batch_size=32, validation_data=(x_test.reshape(-1, 2, 1), y_test)) plt.plot(history.history['loss']) plt.plot(history.history['val_loss']) plt.title('Model loss') plt.ylabel('Loss') plt.xlabel('Epoch') plt.legend(['Train', 'Test'], loc='upper right') plt.show() train_predict = model.predict(x_train.reshape(-1, 2, 1)) test_predict = model.predict(x_test.reshape(-1, 2, 1)) train_predict = scaler.inverse_transform(train_predict) train_predict = train_predict.reshape(-1, 1) y_train = scaler.inverse_transform([y_train]) test_predict = scaler.inverse_transform(test_predict) y_test = scaler.inverse_transform([y_test]) plt.plot(y_train[0], label='train') plt.plot(train_predict[:,0], label='train predict') plt.plot(y_test[0], label='test') plt.plot(test_predict[:,0], label='test predict') plt.legend() plt.show()

这段代码是使用LSTM神经网络模型对车辆速度进行预测的例子。它首先读取了一个名为"车辆：274序：4结果数据.csv"的数据集文件，然后使用pandas库将其转换为DataFrame格式。接下来，它将数据集分为训练集和测试集，并...

train_predict = model.predict（X_train） test_predict = model.predict（X_test） train_predict = scaler.inverse_transform（train_predict） y_train = scaler.inverse_transform（[y_train]） train_predict = np.tile（train_predict，（1， 4）） #将train_predict复制4次，变为（110，4） train_predict = scaler.inverse_transform（train_predict） #进行逆归一化操作 y_train = np.tile（y_train，（1， 4）） #将y_train复制4次，变为（1， 440） y_train = scaler.inverse_transform（y_train.T） #进行逆归一化操作，并将结果reshape为（110，4） y_train = y_train.reshape（110， 4） test_predict = scaler.inverse_transform（test_predict） y_test = scaler.inverse_transform（[y_test]）报错Traceback（最近一次调用）：文件 “C：\Users\马斌\Desktop\cnn测试\cnn改.py”，第 48 行，在 <module> train_predict = scaler.inverse_transform（train_predict）文件 “D：\python\python3.9.5\pythonProject\venv\lib\site-packages\sklearn\preprocessing_data.py”，第 541 行，在 X inverse_transform -= self.min_ 值错误：形状为（110，1）的不可广播输出操作数与广播形状（110，4）不匹配

train_predict = scaler.inverse_transform(train_predict.reshape(-1, 1)) y_train = scaler.inverse_transform([y_train.reshape(-1, 1)]) train_predict = np.tile(train_predict, (1, 4)) y_train = np.tile(y_...

from sklearn.datasets import load_boston import numpy as np import pandas as pd data=pd.read_csv('./data_picture/chapter1/boston_house_prices.csv') data.head() from sklearn.model_selection import train_test_split X=data.drop('MEDV',axis=1) y=data['MEDV'] X=X.values y=y.values X_train,X_test,y_train,y_test=train_test_split(X,y,random_state=33,test_size=0.25) from sklearn.preprocessing import StandardScaler ss_X=StandardScaler() scaler_X=ss_X.fit(X_train) X_train=scaler_X.transform(X_train) X_test=scaler_X.transform(X_test) from sklearn.neural_network import MLPRegressor model = MLPRegressor(solver='lbfgs', hidden_layer_sizes=(15,15), random_state=1) model.fit(X_train, y_train) from sklearn.metrics import r2_score,mean_squared_error,mean_absolute_error print('训练集回归评估指标：') model_score1=model.score(X_train,y_train) print('The accuracy of train data is',model_score1) print('测试集回归评估指标：') model_score2=model.score(X_test,y_test) print('The accuracy of test data is',model_score2) y_test_predict=model.predict(X_test) mse=mean_squared_error(y_test,y_test_predict) print('The value of mean_squared_error:',mse) mae=mean_absolute_error(y_test,y_test_predict) print('The value of mean_absolute_error:',mae)解析一下这段代码

5. 对训练集和测试集中的特征数据X进行标准化处理，使用fit()函数对scaler_X进行训练，再使用transform()函数对X_train和X_test进行标准化处理。 6. 从sklearn.neural_network模块中导入MLPRegressor类，用于创建...

train_predict = scaler.inverse_transform(train_predict) Y_train = scaler.inverse_transform([Y_train]) test_predict = scaler.inverse_transform(test_predict) Y_test = scaler.inverse_transform([Y_test])

在这里，我们使用了scaler.inverse_transform()方法，将train_predict和test_predict进行逆标准化操作，得到真实的预测结果。同时，也将Y_train和Y_test进行逆标准化操作，以便后续对比预测结果和真实值。逆标准化...

# invert predictions train_predict = scaler.inverse_transform(train_predict) Y_train = scaler.inverse_transform([Y_train]) test_predict = scaler.inverse_transform(test_predict) Y_test = scaler.inverse_transform([Y_test])

其中，train_predict表示训练集的预测结果，Y_train表示训练集的真实结果，test_predict表示测试集的预测结果，Y_test表示测试集的真实结果。scaler.inverse_transform()函数是将标准化后的数据转换为原始...

def create_dataset(X, y, time_steps=1): Xs, ys = [], [] for i in range(len(X) - time_steps): Xs.append(X.iloc[i:(i + time_steps)].values) ys.append(y.iloc[i + time_steps]) return np.array(Xs), np.array(ys) TIME_STEPS = 10 X_train, y_train = create_dataset(train[['本车速度', '车头间距', '原车道前车速度']], train['本车加速度'], time_steps=TIME_STEPS) X_test, y_test = create_dataset(test[['本车速度', '车头间距', '原车道前车速度']], test['本车加速度'], time_steps=TIME_STEPS) train_predict = model.predict(X_train) test_predict = model.predict(X_test) train_predict = scaler.inverse_transform(train_predict) y_train = scaler.inverse_transform([y_train]) test_predict = scaler.inverse_transform(test_predict) y_test = scaler.inverse_transform([y_test])Traceback (most recent call last): File "C:\Users\马斌\Desktop\cnn测试\cnn改.py", line 48, in <module> train_predict = scaler.inverse_transform(train_predict) File "D:\python\python3.9.5\pythonProject\venv\lib\site-packages\sklearn\preprocessing\_data.py", line 541, in inverse_transform X -= self.min_ ValueError: non-broadcastable output operand with shape (110,1) doesn't match the broadcast shape (110,4)

这个错误是由于 train_predict 的形状为 (110, 1)，而 y_train 的形状为 (1, 110)，无法进行广播操作。为了解决这个问题，您可以使用 reshape() 方法来调整 train_predict 的形状，使其与 y_train ...

1. 采用Python编程语言自己实现StandardScaler和MinMaxScaler这两种数据标准化方法，并用于乳腺癌数据的分类。要求模型预测的准确率结果必须与以下sklearn的一样： from sklearn.datasets import load_breast_cancer from sklearn.model_selection import train_test_split cancer = load_breast_cancer() X = cancer.data y = cancer.target X_train, X_test, y_train, y_test = train_test_split(X, y, random_state=0, test_size=0.3) from sklearn.preprocessing import MinMaxScaler from sklearn.preprocessing import StandardScaler scaler = StandardScaler() #scaler = MinMaxScaler() scaler.fit(X_train) X_train_scaled = scaler.transform(X_train) X_test_scaled = scaler.transform(X_test) from sklearn.linear_model import LogisticRegression logreg=LogisticRegression() logreg.fit(X_train_scaled, y_train) y_pred = logreg.predict(X_test_scaled) from sklearn.metrics import accuracy_score accuracy_score(y_test, y_pred)

X_train_scaled = scaler.transform(X_train) X_test_scaled = scaler.transform(X_test) # 使用逻辑回归进行分类 from sklearn.linear_model import LogisticRegression logreg = LogisticRegression() logreg....

dataset = new_data.values train= dataset #valid = dataset[2187:,:] #converting dataset into x_train and y_train scaler = MinMaxScaler(feature_range=(0, 1)) scaled_data = scaler.fit_transform(dataset) x_train, y_train = [], [] for i in range(60,len(train)): x_train.append(scaled_data[i-60:i,0]) y_train.append(scaled_data[i,0]) x_train, y_train = np.array(x_train), np.array(y_train) x_train = np.reshape(x_train, (x_train.shape[0],x_train.shape[1],1)) # 重塑训练数据格式为三维形式 x_train = np.reshape(x_train, (x_train.shape[0], x_train.shape[1], 1)) # 创建 LSTM 模型 model = Sequential() model.add(LSTM(units=50, activation='relu', input_shape=(x_train.shape[1], 1))) model.add(Dense(1)) # 编译并拟合模型 model.compile(optimizer='adam', loss='mse') model.fit(x_train, y_train, epochs=10, batch_size=32, verbose=1) #predicting 246 values, using past 60 from the train data inputs = new_data[len(new_data) - 30 - 60:].values inputs = inputs.reshape(-1,1) inputs = scaler.transform(inputs) X_test = [] for i in range(60,inputs.shape[0]): X_test.append(inputs[i-60:i,0]) X_test = np.array(X_test) X_test = np.reshape(X_test, (X_test.shape[0],X_test.shape[1],1)) closing_price = model.predict(X_test)模型预测值为nan

根据代码，可能的原因有以下几种： 1. 数据集中可能存在缺失值或异常值。可以通过检查数据集来解决此问题。 2. 在进行数据归一化时，MinMaxScaler可能没有正确地处理数据。可以尝试使用其他归一化方法来处理数据。...

import numpy as np import pandas as pd from sklearn.model_selection import train_test_split from sklearn.preprocessing import StandardScaler from sklearn.tree import DecisionTreeClassifier from sklearn.metrics import accuracy_score, precision_score, recall_score, f1_score # 加载数据 data = pd.read_csv('heart_2020_cleaned.csv') # 特征工程 X = data.drop('HeartDisease', axis=1) y = data['HeartDisease'] X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42) scaler = StandardScaler() X_train = scaler.fit_transform(X_train) X_test = scaler.transform(X_test) # 模型训练 model = DecisionTreeClassifier(max_depth=3) model.fit(X_train, y_train) # 模型评估 y_pred = model.predict(X_test) acc = accuracy_score(y_test, y_pred) precision = precision_score(y_test, y_pred) recall = recall_score(y_test, y_pred) f1 = f1_score(y_test, y_pred) print('Accuracy:', acc) print('Precision:', precision) print('Recall:', recall) print('F1:', f1)转换数值类型

上述代码中似乎没有出现需要转换数值类型的情况，如果您需要将某个特征的数据类型从字符串转换为数值型，可以使用以下代码： python data['SomeFeature'] = data['SomeFeature'].astype(float) ...

X = data.iloc[:, :-1].values y = data.iloc[:, -1].values X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42) # 导入MNIST数据集 # 对数据进行归一化处理 min_max_scaler = MinMaxScaler() X_train = min_max_scaler.fit_transform(X_train) X_test = min_max_scaler.transform(X_test) y_train = np_utils.to_categorical(y_train, 3) y_test = np_utils.to_categorical(y_test, 3) # 创建DNFN模型 start_time=time.time() model = Sequential() model.add(Dense(64, input_shape=(11,), activation='relu')) model.add(Dropout(0.5)) model.add(Dense(128, activation='relu')) model.add(Dropout(0.5)) model.add(Dense(3, activation='softmax')) # 编译模型 model.compile(loss='categorical_crossentropy', optimizer=Adam(), metrics=['accuracy']) # 训练模型 model.fit(X_train, y_train, validation_data=(X_test, y_test), epochs=100, batch_size=32) y_pred = model.predict(X_test) y_pred = np.argmax(y_pred, axis=1) # 计算模糊分类 fuzzy_pred = [] for i in range(len(y_pred)): fuzzy_class = np.zeros((3,)) fuzzy_class[y_pred[i]] = 1.0 fuzzy_pred.append(fuzzy_class) fuzzy_pred = np.array(fuzzy_pred)画它的loss曲线

history = model.fit(X_train, y_train, validation_data=(X_test, y_test), epochs=100, batch_size=32) plt.plot(history.history['loss']) plt.plot(history.history['val_loss']) plt.title('Model Loss') plt....

import numpy as npimport pandas as pdfrom sklearn.preprocessing import MinMaxScalerfrom keras.models import Sequentialfrom keras.layers import Dense, Dropout, LSTMdf = pd.read_csv('AAPL.csv') # 载入股票数据# 数据预处理scaler = MinMaxScaler(feature_range=(0, 1))scaled_data = scaler.fit_transform(df['Close'].values.reshape(-1, 1))# 训练集和测试集划分prediction_days = 30x_train = []y_train = []for x in range(prediction_days, len(scaled_data)): x_train.append(scaled_data[x-prediction_days:x, 0]) y_train.append(scaled_data[x, 0])x_train, y_train = np.array(x_train), np.array(y_train)x_train = np.reshape(x_train, (x_train.shape[0], x_train.shape[1], 1))# 构建BP神经网络模型model = Sequential()model.add(LSTM(units=50, return_sequences=True, input_shape=(x_train.shape[1], 1)))model.add(Dropout(0.2))model.add(LSTM(units=50, return_sequences=True))model.add(Dropout(0.2))model.add(LSTM(units=50))model.add(Dropout(0.2))model.add(Dense(units=1))model.compile(optimizer='adam', loss='mean_squared_error')model.fit(x_train, y_train, epochs=25, batch_size=32)# 使用模型进行预测test_start = len(scaled_data) - prediction_daystest_data = scaled_data[test_start:, :]x_test = []for x in range(prediction_days, len(test_data)): x_test.append(test_data[x-prediction_days:x, 0])x_test = np.array(x_test)x_test = np.reshape(x_test, (x_test.shape[0], x_test.shape[1], 1))predicted_price = model.predict(x_test)predicted_price = scaler.inverse_transform(predicted_price)# 可视化预测结果import matplotlib.pyplot as pltplt.plot(df['Close'].values)plt.plot(range(test_start, len(df)), predicted_price)plt.show()介绍

6. 使用模型进行预测：将测试集输入到模型中，使用predict函数对测试集进行预测，并使用inverse_transform函数将预测结果反归一化。 7. 可视化预测结果：使用matplotlib库将实际股票价格和预测股票价格可视化比较。...

train_dictionaries_3.zip_train_图像超分辨率_基于字典算法_字典超分辨率_字典训练

基于训练字典的图像超分辨率算法,灵活的应用先验约束

train_forward_Inverse.py

train.py

处理数据集脚本文件，用于生成train.txt、 test.txt、 train.names等文件

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train代码.train代码。train代码

tensorflow_Resnet_train_test:用于在自己的数据集上训练不同体系结构（DenseNet，ResNet，AlexNet，GoogLeNet，VGG，NiN）的代码+多GPU支持+批处理和单个图像测试支持

train注释.py

train_predict = scaler.inverse_transform(train_predict) Y_train = scaler.inverse_transform([Y_train]) test_predict = scaler.inverse_transform(test_predict) Y_test = scaler.inverse_transform([Y_test])

# invert predictions train_predict = scaler.inverse_transform(train_predict) Y_train = scaler.inverse_transform([Y_train]) test_predict = scaler.inverse_transform(test_predict) Y_test = scaler.inverse_transform([Y_test])

train_dictionaries_3.zip_train_图像超分辨率_基于字典算法_字典 超分辨率_字典训练

train_forward_Inverse.py

train.py

处理数据集脚本文件，用于生成train.txt、 test.txt、 train.names等文件

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