wine_data=pd.read_csv(r'C:\Users\20778\Desktop\batch1(xin).csv') data=wine_data.iloc[:,1:] target=wine_data.iloc[:,0] data1=wine_data.iloc[:,1:333] data2=wine_data.iloc[:,333:] y_known = data1=wine_data.iloc[:,1:333] y_unknown = data2=wine_data.iloc[:,333:] x_train, x_test, y_train, y_test = train_test_split(data1, y_known, test_size=0.2, random_state=1) model = Sequential() model.add(Dense(64, activation='relu', input_dim=x_train.shape[1])) model.add(Dense(64, activation='relu')) model.add(Dense(1, activation='sigmoid')) model.compile(optimizer='adam', loss='binary_crossentropy', metrics=['accuracy']) model.fit(x_train, y_train, epochs=300)错误在哪

时间: 2024-01-13 09:05:04 浏览: 34
这段代码有一个错误：在定义y_known时，代码重复赋值了y_known和data1，导致y_known的取值与实际意图不符。下面是修改后的代码： ``` wine_data = pd.read_csv(r'C:\Users\20778\Desktop\batch1(xin).csv') data = wine_data.iloc[:,1:] target = wine_data.iloc[:,0] data1 = wine_data.iloc[:,1:333] data2 = wine_data.iloc[:,333:] y_known = wine_data.iloc[:,0] # 修改此行代码 y_unknown = data2 x_train, x_test, y_train, y_test = train_test_split(data1, y_known, test_size=0.2, random_state=1) model = Sequential() model.add(Dense(64, activation='relu', input_dim=x_train.shape[1])) model.add(Dense(64, activation='relu')) model.add(Dense(1, activation='sigmoid')) model.compile(optimizer='adam', loss='binary_crossentropy', metrics=['accuracy']) model.fit(x_train, y_train, epochs=300) ``` 修改后的代码将y_known的取值设为全部数据的第0列，即目标变量列。

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修改一下这段代码在pycharm中的实现，import pandas as pd import numpy as np from sklearn.model_selection import train_test_split import torch import torch.nn as nn import torch.nn.functional as F import torch.optim as optim #from torchvision import datasets,transforms import torch.utils.data as data #from torch .nn:utils import weight_norm import matplotlib.pyplot as plt from sklearn.metrics import precision_score from sklearn.metrics import recall_score from sklearn.metrics import f1_score from sklearn.metrics import cohen_kappa_score data_ = pd.read_csv(open(r"C:\Users\zhangjinyue\Desktop\rice.csv"),header=None) data_ = np.array(data_).astype('float64') train_data =data_[:,:520] train_Data =np.array(train_data).astype('float64') train_labels=data_[:,520] train_labels=np.array(train_data).astype('float64') train_data,train_data,train_labels,train_labels=train_test_split(train_data,train_labels,test_size=0.33333) train_data=torch.Tensor(train_data) train_data=torch.LongTensor(train_labels) train_data=train_data.reshape(-1,1,20,26) train_data=torch.Tensor(train_data) train_data=torch.LongTensor(train_labels) train_data=train_data.reshape(-1,1,20,26) start_epoch=1 num_epoch=1 BATCH_SIZE=70 Ir=0.001 classes=('0','1','2','3','4','5') device=torch.device("cuda"if torch.cuda.is_available()else"cpu") torch.backends.cudnn.benchmark=True best_acc=0.0 train_dataset=data.TensorDataset(train_data,train_labels) test_dataset=data.TensorDataset(train_data,train_labels) train_loader=torch.utills.data.DataLoader(dtaset=train_dataset,batch_size=BATCH_SIZE,shuffle=True) test_loader=torch.utills.data.DataLoader(dtaset=train_dataset,batch_size=BATCH_SIZE,shuffle=True)

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# 加载数据集 train_data = pd.read_csv('mnist_dataset/mnist_train.csv') test_data = pd.read_csv('mnist_dataset/mnist_test.csv') # 提取特征和标签 train_features, train_labels = train_data.iloc[:, 1:], train_data.iloc[:, 0] test_features, test_labels = test_data.iloc[:, 1:], test_data.iloc[:, 0]# 对标签进行二进制编码 lb = LabelBinarizer() train_labels = lb.fit_transform(train_labels) test_labels = lb.fit_transform(test_labels) # 将特征值缩放到0-1之间并且reshape为(28,28,1) train_features = train_features.values.reshape(-1, 28, 28, 1) / 255. test_features = test_features.values.reshape(-1, 28, 28, 1) / 255.在以上代码基础上使用tensorflow构建深度神经网络处理mnist数据集，给出代码

train_data = pd.read_csv('mnist_dataset/mnist_train.csv') test_data = pd.read_csv('mnist_dataset/mnist_test.csv') train_features, train_labels = train_data.iloc[:, 1:], train_data.iloc[:, 0] test_...

使用tensorflow对mnist数据集进行深度神经网络构建，train_data = pd.read_csv('mnist_dataset/mnist_train.csv') test_data = pd.read_csv('mnist_dataset/mnist_test.csv')，请给出包括但不限于数据归一化、标准化、CNN构建、适当的损失函数和优化器选择、模型训练和评估、调整超参数等的代码

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File "C:\Users\20778\AppData\Local\Temp\ipykernel_9340\2533689733.py", line 1 data=pd.read_csv('C:\Users\20778\Desktop\batch1(xin).csv') ^ SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape

这个错误提示显示在读取数据文件时出现了Syntax...data=pd.read_csv(r'C:\Users\20778\Desktop\batch1(xin).csv') 这样Python就会将路径字符串视为原始字符串，不会对其中的反斜杠进行转义，从而避免解码错误。

csv_data = tf.reshape ( csv_data[:, :, 0], [batch_size, *noise_dim] )啥意思

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import numpy as np import pandas as pd from keras.models import Sequential from keras.layers import Dense, LSTM # 读取csv文件 data = pd.read_csv('3c_left_1-6.csv') # 将数据转换为numpy数组 data = np.array(data) data = data.reshape((data.shape[0], 1, data.shape[1])) # 获取数据的维度信息 n_samples, n_timesteps, n_features = data.shape # 定义模型 model = Sequential() model.add(LSTM(64, input_shape=(n_timesteps, n_features), return_sequences=True)) model.add(Dense(n_features)) # 编译模型 model.compile(loss='mse', optimizer='adam') # 训练模型 model.fit(data, data, epochs=1, batch_size=32) # 对数据进行去噪 denoised_data = model.predict(data) # 计算去噪后的SNR,MSE,PSNR snr = np.mean(np.power(data, 2)) / np.mean(np.power(data - denoised_data, 2)) mse = np.mean(np.power(data - denoised_data, 2)) psnr = 10 * np.log10((np.power(data.max(), 2) / mse)) print("Signal-to-Noise Ratio (SNR): {:.2f} dB".format(snr)) print("Mean Squared Error (MSE): {:.2f}".format(mse)) print("Peak Signal-to-Noise Ratio (PSNR): {:.2f} dB".format(psnr)) data = {'SNR': [snr], 'MSE': [mse], 'PSNR': [psnr]} df = pd.DataFrame(data) df.to_csv('indicator_lstm.csv', index=False) # 将结果保存为csv文件 denoised_data = pd.DataFrame(denoised_data.reshape(n_samples, n_timesteps * n_features)) denoised_data.to_csv('denoised_data_lstm.csv', index=False)为该代码添加防止过拟合

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下面代码转化为paddle2.2.2代码 ： gt_batch_list.append(gt_pack) input_batch = np.concatenate(input_batch_list, axis=0) gt_batch = np.concatenate(gt_batch_list, axis=0) in_data = torch.from_numpy(input_batch.copy()).permute(0,3,1,2).cuda() gt_data = torch.from_numpy(gt_batch.copy()).permute(0,3,1,2).cuda()

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下面的这段python代码，哪里有错误，修改一下：import numpy as np import matplotlib.pyplot as plt import pandas as pd import torch import torch.nn as nn from torch.autograd import Variable from sklearn.preprocessing import MinMaxScaler training_set = pd.read_csv('CX2-36_1971.csv') training_set = training_set.iloc[:, 1:2].values def sliding_windows(data, seq_length): x = [] y = [] for i in range(len(data) - seq_length): _x = data[i:(i + seq_length)] _y = data[i + seq_length] x.append(_x) y.append(_y) return np.array(x), np.array(y) sc = MinMaxScaler() training_data = sc.fit_transform(training_set) seq_length = 1 x, y = sliding_windows(training_data, seq_length) train_size = int(len(y) * 0.8) test_size = len(y) - train_size dataX = Variable(torch.Tensor(np.array(x))) dataY = Variable(torch.Tensor(np.array(y))) trainX = Variable(torch.Tensor(np.array(x[1:train_size]))) trainY = Variable(torch.Tensor(np.array(y[1:train_size]))) testX = Variable(torch.Tensor(np.array(x[train_size:len(x)]))) testY = Variable(torch.Tensor(np.array(y[train_size:len(y)]))) class LSTM(nn.Module): def __init__(self, num_classes, input_size, hidden_size, num_layers): super(LSTM, self).__init__() self.num_classes = num_classes self.num_layers = num_layers self.input_size = input_size self.hidden_size = hidden_size self.seq_length = seq_length self.lstm = nn.LSTM(input_size=input_size, hidden_size=hidden_size, num_layers=num_layers, batch_first=True) self.fc = nn.Linear(hidden_size, num_classes) def forward(self, x): h_0 = Variable(torch.zeros( self.num_layers, x.size(0), self.hidden_size)) c_0 = Variable(torch.zeros( self.num_layers, x.size(0), self.hidden_size)) # Propagate input through LSTM ula, (h_out, _) = self.lstm(x, (h_0, c_0)) h_out = h_out.view(-1, self.hidden_size) out = self.fc(h_out) return out num_epochs = 2000 learning_rate = 0.001 input_size = 1 hidden_size = 2 num_layers = 1 num_classes = 1 lstm = LSTM(num_classes, input_size, hidden_size, num_layers) criterion = torch.nn.MSELoss() # mean-squared error for regression optimizer = torch.optim.Adam(lstm.parameters(), lr=learning_rate) # optimizer = torch.optim.SGD(lstm.parameters(), lr=learning_rate) runn = 10 Y_predict = np.zeros((runn, len(dataY))) # Train the model for i in range(runn): print('Run: ' + str(i + 1)) for epoch in range(num_epochs): outputs = lstm(trainX) optimizer.zero_grad() # obtain the loss function loss = criterion(outputs, trainY) loss.backward() optimizer.step() if epoch % 100 == 0: print("Epoch: %d, loss: %1.5f" % (epoch, loss.item())) lstm.eval() train_predict = lstm(dataX) data_predict = train_predict.data.numpy() dataY_plot = dataY.data.numpy() data_predict = sc.inverse_transform(data_predict) dataY_plot = sc.inverse_transform(dataY_plot) Y_predict[i,:] = np.transpose(np.array(data_predict)) Y_Predict = np.mean(np.array(Y_predict)) Y_Predict_T = np.transpose(np.array(Y_Predict))

training_set = pd.read_csv('CX2-36_1971.csv') training_set = training_set.iloc[:, 1:2].values # 定义数据处理函数 def sliding_windows(data, seq_length): x = [] y = [] for i in range(len(data) - ...

修正以下的代码data = pd.read_excel(r"D:\pythonProject60\filtered_data1.xlsx") X = data.iloc[:, :-1] y = data.iloc[:, -1] from scipy.interpolate import interp1d # 数据归一化 scaler = StandardScaler() # 将X,Y数据进行归一化 X = scaler.fit_transform(X) # 随机划分训练集和测试集 X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.3, train_size=0.7) X_fuzzy = [] for i in range(X.shape[1]): fuzzy_vals = fuzz.trimf(X[:,i], [np.min(X[:,i]), np.mean(X[:,i]), np.max(X[:,i])]) X_fuzzy.append(fuzzy_vals) X_fuzzy = np.array(X_fuzzy).T # 构建深度神经模糊网络 model = tf.keras.Sequential([ tf.keras.layers.Dense(64, activation='relu', input_dim=X_fuzzy.shape[1]), tf.keras.layers.Dense(32, activation='relu'), tf.keras.layers.Dense(1, activation='sigmoid') ]) model.compile(optimizer='adam', loss='binary_crossentropy', metrics=['accuracy']) model.fit(X_fuzzy, y, epochs=10, batch_size=32) # 训练随机森林分类器 rf_clf = RandomForestClassifier(n_estimators=100, max_depth=5) rf_clf.fit(model.predict(X_fuzzy), y) # 预测新数据点 new_data = np.random.rand(5) new_data_fuzzy = [] for i in range(new_data.shape[0]): fuzzy_val = fuzz.interp_membership(np.linspace(np.min(X[:,i]), np.max(X[:,i]), 100), fuzz.trimf(np.linspace(np.min(X[:,i]), np.max(X[:,i]), 100), [np.min(X[:,i]), np.mean(X[:,i]), np.max(X[:,i])]), new_data[i]) new_data_fuzzy.append(fuzzy_val) new_data_fuzzy = np.array(new_data_fuzzy).reshape(1,-1)

data = pd.read_excel(r"D:\pythonProject60\filtered_data1.xlsx") X = data.iloc[:, :-1] y = data.iloc[:, -1] # 数据归一化 scaler = StandardScaler() X = scaler.fit_transform(X) # 随机划分训练集和测试集...

# 定义数据集 train_data = torchvision.datasets.ImageFolder(os.path.join(data_dir, 'train'), transform=transform_train) val_data = torchvision.datasets.ImageFolder(os.path.join(data_dir, 'val'), transform=transform_val) # 定义数据加载器 train_loader = torch.utils.data.DataLoader(train_data, batch_size=32, shuffle=True, num_workers=4) val_loader = torch.utils.data.DataLoader(val_data, batch_size=32, shuffle=False, num_workers=4)，好像并没有按照一定的比例你分割数据集

train_loader = torch.utils.data.DataLoader(train_data, batch_size=32, shuffle=True, num_workers=4) val_loader = torch.utils.data.DataLoader(val_data, batch_size=32, shuffle=False, num_workers=4) ...

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