np.append(np.array(y_score), tf.sigmoid(preds).numpy(), axis=0)什么意思

import numpy as np # define 'train' and 'valid' variables first # 将 preds_valid 转换为 NumPy 数组 preds_valid = np.array(preds_valid) # make predictions preds = [] for i in range(0,103): a = train['close'][len(train)-103+i:].sum() + sum(preds) b = a/103 preds.append(b) # calculate RMSE valid = [...] # define 'valid' variable first preds_np = np.array(preds) sum_preds = preds_np.sum() preds_valid = [] for i in range(0, len(preds) - 102): preds_slice = preds_np[i:i+103] sum_slice = preds_slice.sum() b = sum_slice / 103 preds_valid.append(b) rms = np.sqrt(np.mean(np.power((np.array(valid['close'])-preds_valid),2)))有错怎么解决

这个代码中的错误是由于 valid['close'] 和 preds_valid 都不是 NumPy 数组，因此...rms = np.sqrt(np.mean(np.power((valid['close'].values - np.array(preds_valid)), 2))) 以上两种方法都可以解决这个错误。

saved_lines = np.append(saved_lines, fixed_distance[np.newaxis, :, :], axis=0)表示什么意思

这行代码的意思是将 fixed_distance 数组添加到 saved_lines 数组...axis=0 表示在第一个维度（即行）上进行拼接。np.newaxis 用于给 fixed_distance 添加一个新的维度，这样才能与 saved_lines 进行拼接。

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))

在这段代码中，可能存在以下错误： 1. 缺少必要的库或模块。 2. training_set 的文件路径是否正确。...Y_Predict = np.mean(Y_predict, axis=0) Y_Predict_T = np.transpose(np.array(Y_Predict))

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) fuzzy_pred = np.argmax(fuzzy_pred, axis=1) report = classification_report(y_test, fuzzy_pred) print(report)该成四分类

如果你要将该代码从三分类改为四分类...fuzzy_pred = np.array(fuzzy_pred) fuzzy_pred = np.argmax(fuzzy_pred, axis=1) report = classification_report(y_test, fuzzy_pred, labels=[0, 1, 2, 3]) print(report)

修正下列代码cntr, u, u0, d, jm, p, fpc = fuzz.cluster.cmeans(train_X.T, 3, 2, error=0.005, maxiter=1000, init=None) train_u, _, _, _, _, _, = fuzz.cluster.cmeans_predict(train_X.T, cntr, 2, error=0.005, maxiter=1000) train_predictions = np.argmax(train_u, axis=0) train_y = np.array(train_y) train_accuracy = accuracy_score(train_y, train_predictions) print(train_y) print(train_predictions) train_auc = roc_auc_score(train_y, train_u.T, multi_class='ovo') loss = np.sum((train_u - train_y.reshape(-1,1)) ** 2) loss_curve.append(loss) accuracy_curve.append(train_accuracy) auc_curve.append(train_auc)

train_predictions = np.argmax(train_u, axis=0) train_accuracy = accuracy_score(train_y, train_predictions) train_auc = keras.metrics.AUC(multi_label=True)(train_y_onehot, train_u.T).numpy() # 计算多...

from sklearn.neighbors import KNeighborsClassifier k_score = [] k_range = range(1,228) for k in range(1,228): knn = KNeighborsClassifier(n_neighbors=k) knn.fit(X_train,y_train) k_score.append([k,knn.score(X_test,y_test)]) print(k, k_score) k_score = np.array(k_score) k_score = pd.DataFrame(k_score,columns=['Value of K for KNN','Score']) ax = sns.lineplot(data=k_score,x="Value of K for KNN", y="Score",)。改写这段代码

import numpy as np import seaborn as sns from sklearn.neighbors import KNeighborsClassifier k_score = [] for k in range(1, 228): knn = KNeighborsClassifier(n_neighbors=k) knn.fit(X_train, y_train)...

# 封装函数来进行knn试探性运算 def knn_score(k,X,y): # 构造算法对象 knn = KNeighborsClassifier(n_neighbors = k) scores = [] train_scores = [] for i in range(100): # 拆分 X_train,X_test,y_train,y_test = train_test_split(X,y,test_size=0.2,random_state=1) # 训练 knn.fit(X_train,y_train) # 评价模型 scores.append(knn.score(X_test,y_test)) # 经验评分 train_scores.append(knn.score(X_train,y_train)) return np.array(scores).mean(),np.array(train_scores).mean() # 调参 result_dict = {} k_list = [1,3,5,7,9,11] for k in k_list: score,train_score = knn_score(k,X,y) result_dict[k] = [score,train_score]利用这段代码调用tkinter库实现界面

return np.array(scores).mean(),np.array(train_scores).mean() # 创建窗口 root = tk.Tk() root.title("KNN试探性运算") # 添加标签 label1 = tk.Label(root, text="KNN试探性运算", font=("Arial", 16)) label...

np.append([0], idx_charge_state_index[:, 1])什么意思

这行代码是将一个数组 [0] 和另一个数组 idx_...np.append() 是 numpy 库中的一个方法，用于将两个数组连接起来，返回一个新的数组。第一个参数传入要连接的数组，第二个参数传入要连接的数组，可以同时连接多个数组。

这段程序的功能？ for subject_id, model_file in personalised_cps.items(): model = torch.load(model_file, map_location=config.device) subj_dev_labels, subj_dev_preds = get_predictions(model=model, task=PERSONALISATION, data_loader=id2data_loaders[subject_id]['devel'], use_gpu=use_gpu) all_dev_labels.append(subj_dev_labels) all_dev_preds.append(subj_dev_preds) all_dev_ids.extend([subject_id]subj_dev_labels.shape[0]) subj_test_labels, subj_test_preds = get_predictions(model=model, task=PERSONALISATION, data_loader=id2data_loaders[subject_id]['test'], use_gpu=use_gpu) all_test_labels.append(subj_test_labels) all_test_preds.append(subj_test_preds) all_test_ids.extend([subject_id]subj_test_labels.shape[0]) all_dev_labels = np.concatenate(all_dev_labels) all_dev_preds = np.concatenate(all_dev_preds) all_test_labels = np.concatenate(all_test_labels) all_test_preds = np.concatenate(all_test_preds)

对于每个模型，它会将开发集和测试集的真实标签和预测值存储在相应的数组 all_dev_labels、all_dev_preds、all_test_labels 和 all_test_preds 中，同时将子主题的 id 存储在 all_dev_ids 和 all_test_ids 中。...

#make predictions preds = [] for i in range(0,103): a = train['close'][len(train)-103+i:].sum() + sum(preds) b = a/103 NameError: name 'rms' is not defined preds.append(b) #calculate rmse import numpy as np preds = [1, 2, 3, 4, 5] preds_np = np.array(preds) sum_preds = preds_np.sum() preds_valid = [] for i in range(0, len(preds) - 102): a = preds[i:i+103].sum() b = a/103 preds_valid.append(b) rms=np.sqrt(np.mean(np.power((np.array(valid['close'])-preds),2))) rms

这段代码中存在两个问题： 1. 在第一部分代码中（make predictions），你使用了未定义的 train ...rms = np.sqrt(np.mean(np.power((np.array(valid['close'])-preds_valid),2))) 这样就可以避免上述错误了。

long = np.append(0,long[:-1])什么意思

这行代码的意思是将数组 long 中的最后一个元素移动到数组的第一个位置，并将...np.append() 是 numpy 库中的函数，用于在数组的末尾添加元素。[:-1] 表示从数组的第一个元素到倒数第二个元素，即不包括最后一个元素。

修正以下代码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)

import numpy as np import skfuzzy as fuzz # 分割训练集和测试集 X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.3, random_state=42) # 对特征进行模糊化处理 X_train_fuzzy = [] X_...

修改和补充下列代码得到十折交叉验证的平均每一折auc值和平均每一折aoc曲线，平均每一折分类报告以及平均每一折混淆矩阵 min_max_scaler = MinMaxScaler() X_train1, X_test1 = x[train_id], x[test_id] y_train1, y_test1 = y[train_id], y[test_id] # apply the same scaler to both sets of data X_train1 = min_max_scaler.fit_transform(X_train1) X_test1 = min_max_scaler.transform(X_test1) X_train1 = np.array(X_train1) X_test1 = np.array(X_test1) config = get_config() tree = gcForest(config) tree.fit(X_train1, y_train1) y_pred11 = tree.predict(X_test1) y_pred1.append(y_pred11 X_train.append(X_train1) X_test.append(X_test1) y_test.append(y_test1) y_train.append(y_train1) X_train_fuzzy1, X_test_fuzzy1 = X_fuzzy[train_id], X_fuzzy[test_id] y_train_fuzzy1, y_test_fuzzy1 = y_sampled[train_id], y_sampled[test_id] X_train_fuzzy1 = min_max_scaler.fit_transform(X_train_fuzzy1) X_test_fuzzy1 = min_max_scaler.transform(X_test_fuzzy1) X_train_fuzzy1 = np.array(X_train_fuzzy1) X_test_fuzzy1 = np.array(X_test_fuzzy1) config = get_config() tree = gcForest(config) tree.fit(X_train_fuzzy1, y_train_fuzzy1) y_predd = tree.predict(X_test_fuzzy1) y_pred.append(y_predd) X_test_fuzzy.append(X_test_fuzzy1) y_test_fuzzy.append(y_test_fuzzy1)y_pred = to_categorical(np.concatenate(y_pred), num_classes=3) y_pred1 = to_categorical(np.concatenate(y_pred1), num_classes=3) y_test = to_categorical(np.concatenate(y_test), num_classes=3) y_test_fuzzy = to_categorical(np.concatenate(y_test_fuzzy), num_classes=3) print(y_pred.shape) print(y_pred1.shape) print(y_test.shape) print(y_test_fuzzy.shape) # 深度森林 report1 = classification_report(y_test, y_prprint("DF",report1) report = classification_report(y_test_fuzzy, y_pred) print("DF-F",report) mse = mean_squared_error(y_test, y_pred1) rmse = math.sqrt(mse) print('深度森林RMSE:', rmse) print('深度森林Accuracy:', accuracy_score(y_test, y_pred1)) mse = mean_squared_error(y_test_fuzzy, y_pred) rmse = math.sqrt(mse) print('F深度森林RMSE:', rmse) print('F深度森林Accuracy:', accuracy_score(y_test_fuzzy, y_pred)) mse = mean_squared_error(y_test, y_pred) rmse = math.sqrt(mse)

mean_tpr = np.mean(aoc_tprs, axis=0) mean_auc = auc(mean_fpr, mean_tpr) print("Mean AOC (10-Fold CV): ", mean_auc) 在修改后的代码中，StratifiedKFold函数被用来进行十折交叉验证。每一折的训练数据...

label_tarin.append(np.array(np.where(ground_truth == 0 & 1)).T)

Sorry, as an AI language model, I am not able to provide context to complete the code snippet. Can you please provide more information about the code and the programming language you are working with?

np.append(np.array(y_score), tf.sigmoid(preds).numpy(), axis=0)什么意思

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saved_lines = np.append(saved_lines, fixed_distance[np.newaxis, :, :], axis=0)表示什么意思

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) fuzzy_pred = np.argmax(fuzzy_pred, axis=1) report = classification_report(y_test, fuzzy_pred) print(report)该成四分类

np.append([0], idx_charge_state_index[:, 1])什么意思

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