import numpy as np # b = np.load("train_od_3936_109_109.npy") # print(b) c = np.load("X_od.npy") D = np.load("Y_od.npy") print(c.shape) print(D.shape) max=np.max(c) train_x=c[0:1000]/max train_y=D[0:1000]/max val_x=c[1000:1150]/max val_y=D[1000:1150]/max test_x=c[1150:]/max twst_y=D[1150:] print(train_x.shape) # print(D.shape) print(val_x.shape) # print(D.shape) print(test_x.shape) # print(D.shape) from keras.layers import Dense, LSTM, ConvLSTM2D, Dropout, Reshape from keras.models import Sequential model = Sequential() model.add(Reshape((5,109,109,1),input_shape=(5,109,109))) model.add(ConvLSTM2D(filters=64, kernel_size=(3, 3), activation='relu', padding='same',input_shape=(5, 109, 109, 1))) # model.add(Dropout(0.2)) model.add(Dense(1)) # 在Dense层中，输出维度应该是(109, 109, 1)，而不是1 model.add(Reshape((109, 109))) # 在Reshape层中，输出维度应该是(109, 109)而不是(5, 109, 109)。 model.summary() model.compile(optimizer='adam', loss='mse') history = model.fit(train_x, train_y, epochs=50, batch_size=32, validation_data=(val_x, val_y), verbose=1, shuffle=False)该段程序怎么改为以LSTM神经网络模型的地铁客流预测和预测结果可视化代码

from sklearn.decomposition import PCA from sklearn.cluster import KMeans from sklearn.metrics import accuracy_score import numpy as np import matplotlib.pyplot as plt from tensorflow.examples.tutorials.mnist import input_data import datetime # 导入数据集 start = datetime.datetime.now() #计算程序运行时间 mnist = input_data.read_data_sets("MNIST_data/", one_hot=True) X_train = mnist.train.images y_train = mnist.train.labels X_test = mnist.test.images y_test = mnist.test.labels #PCA降维 pca = PCA(n_components=10) X_train_pca = pca.fit_transform(X_train) X_test_pca = pca.fit_transform(X_test) # 可视化 plt.scatter(X_train_pca[:, 0], X_train_pca[:, 1], c=np.argmax(y_train, axis=1)) plt.show() # K-means聚类 kmeans_centers = [] # 用于存储初始类中心 for i in range(10): idx = np.where(np.argmax(y_train, axis=1) == i)[0] # 获取第i类数字的索引列表 sample_idx = np.random.choice(idx) # 随机指定一个样本作为初始类中心 kmeans_centers.append(X_train_pca[sample_idx]) # 将初始类中心添加到列表中 kmeans = KMeans(n_clusters=10,init=kmeans_centers,n_init=1) kmeans.fit(X_train_pca) # 计算分类错误率 y_pred = kmeans.predict(X_test_pca) acc = accuracy_score(np.argmax(y_test, axis=1), y_pred) print("分类错误率：{:.2%}".format(1-acc)) # 计算程序运行时间 end = datetime.datetime.now() print("程序运行时间为:"+str((end-start).seconds)+"秒")优化这段代码，输出其中pca降维的因子负荷量

import numpy as np import matplotlib.pyplot as plt from tensorflow.examples.tutorials.mnist import input_data import datetime # 导入数据集 start = datetime.datetime.now() #计算程序运行时间 mnist = ...

from sklearn.datasets import load_breast_cancer from sklearn.model_selection import train_test_split from sklearn.ensemble import RandomForestClassifier from sklearn.metrics import accuracy_score from lime.lime_tabular import LimeTabularExplainer import numpy as np import pandas as pd # 准备数据 data = load_breast_cancer() # df=pd.DataFrame(data.data,columns=data.feature_names) # df['target']=data.target # print(df.head()) X = data.data y = data.target # 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, random_state=42) # 训练模型 rfc = RandomForestClassifier(n_estimators=100, random_state=42) rfc.fit(X_train, y_train) # 预测结果 y_pred = rfc.predict(X_test) accuracy = accuracy_score(y_test, y_pred) print(f"Accuracy:{accuracy:.3f}") # 解释模型结果 def explain_sample(x, model, feature_names): explainer = LimeTabularExplainer(X_train, feature_names=feature_names, class_names=data.target_names) exp = explainer.explain_instance(x, model.predict_proba, num_features=len(feature_names)) return exp # 随机选择一个测试样本并解释 idx = np.random.randint(len(X_test)) x=X_test[idx] exp=explain_sample(x,rfc,data.feature_names) fig=exp.as_pyplot_figure() print(f"Sample index:{idx}") fig.show()优化一下这段代码，让可视化图片不要一闪而过

import numpy as np import pandas as pd import matplotlib.pyplot as plt # 准备数据 data = load_breast_cancer() X = data.data y = data.target # 划分训练集和测试集 X_train, X_test, y_train, y_...

base_dir = 'C:\\Users\\dell\\Desktop\\U\\Unet3-Plus-main\\Unet3+' x_train = os.path.join(base_dir, "image") y_train = os.path.join(base_dir, 'label') #DATASET_PATH = 'D:\pythonProject' #x_train, y_train = load_dataset(DATASET_PATH) # # image = cv2.imread(x_train, y_train,cv2.IMREAD_COLOR) # x_train = np.asarray(x_train) # y_train = np.asarray(y_train) # Normalizing data. x_train = (x_train - 127.5) / 127.5 y_train = (y_train - 127.5) / 127.5

import numpy as np # 定义数据集路径 base_dir = 'C:\\Users\\dell\\Desktop\\U\\Unet3-Plus-main\\Unet3+' x_train_path = os.path.join(base_dir, 'image') y_train_path = os.path.join(base_dir, 'label') # ...

import numpy as np import matplotlib.pyplot as plt from keras.layers import Dense,LSTM,Dropout from keras.models import Sequential # 加载数据 X = np.load("X_od.npy") Y = np.load("Y_od.npy") # 数据归一化 max = np.max(X) X = X / max Y = Y / max # 划分训练集、验证集、测试集 train_x = X[:1000] train_y = Y[:1000] val_x = X[1000:1150] val_y = Y[1000:1150] test_x = X[1150:] test_y = Y # 构建LSTM模型 model = Sequential() model.add(LSTM(units=64, input_shape=(5, 109))) model.add(Dropout(0.2)) model.add(Dense(units=109, activation='linear')) model.summary() # 编译模型 model.compile(optimizer='adam', loss='mse') # 训练模型 history = model.fit(train_x, train_y, epochs=50, batch_size=32, validation_data=(val_x, val_y), verbose=1, shuffle=False) # 评估模型 test_loss = model.evaluate(test_x, test_y) print('Test loss:', test_loss) # 模型预测 train_predict = model.predict(train_x) val_predict = model.predict(val_x) test_predict = model.predict(test_x) # 预测结果可视化 plt.figure(figsize=(20, 8)) plt.plot(train_y[-100:], label='true') plt.plot(train_predict[-100:], label='predict') plt.legend() plt.title('Training set') plt.show() plt.figure(figsize=(20, 8)) plt.plot(val_y[-50:], label='true') plt.plot(val_predict[-50:], label='predict') plt.legend() plt.title('Validation set') plt.show() plt.figure(figsize=(20, 8)) plt.plot(test_y[:50], label='true') plt.plot(test_predict[:50], label='predict') plt.legend() plt.title('Test set') plt.show()如何用返回序列修改这段程序

import numpy as np import matplotlib.pyplot as plt from keras.layers import Dense, LSTM, Dropout from keras.models import Sequential # 加载数据 X = np.load("X_od.npy") Y = np.load("Y_od.npy") # 数据...

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

import numpy as np # 将 valid['close'] 和 preds_valid 都转换为 NumPy 数组 close_np = np.array(valid['close']) preds_valid_np = np.array(preds_valid) # 计算均方根误差 rms = np.sqrt(np.mean(np.power(...

补全程序，完成以下功能：创建一个存储了21~30的整数的Series对象，索引值为1~10，将其中小于等于25的元素赋值为0。import pandas as pd import numpy as np data = np._____(21, 31, 1, np.int32) index = np.arange(1, 11, 1) num = pd.Series(_, _) print(num) num[num.values <= _] = ___ print(num)

import pandas as pd import numpy as np data = np.arange(21, 31, 1, np.int32) index = np.arange(1, 11, 1) num = pd.Series(data, index) print(num) num[num.values <= 25] = 0 print(num)

import pandas as pd import numpy as np from sklearn.model_selection import train_test_split from sklearn.metrics import accuracy_score from sklearn.linear_model import LinearRegression #1.加载数据 data = pd.read_csv(r"E:\winequality-red.csv") data = np.array(data) x = data[:,0:11] y = data[:,-1] #2.划分训练集和测试集 train_x,test_x,train_y,test_y=train_test_split(x,y,test_size=0.3) #3.构建分类模型 model = LinearRegression() #4.训练模型 model.fit(train_x,train_y) #5.预测 test_y_pre = model.predict(test_x) #6.评估模型 print(accuracy_score(test_y_pre,test_y)) 为什么这段代码报错

import numpy as np from sklearn.model_selection import train_test_split from sklearn.metrics import mean_squared_error from sklearn.linear_model import LinearRegression # 1.加载数据 data = pd.read_...

from sklearn.datasets import load_breast_cancer from sklearn.svm import SVC from sklearn.model_selection import train_test_split import matplotlib.pyplot as plt import numpy as np #导入乳腺癌数据集 cancers = load_breast_cancer() #下载乳腺癌数据集 X = cancers.data #获取特征

这是一些Python代码，导入了sklearn的数据集、支持向量机模型和模型选择方法，同时还导入了matplotlib库和numpy库。这些代码通常用于机器学习任务中的数据预处理、训练模型和可视化结果。其中，load_breast_cancer是...

import numpy as np a=np.arange(5) np.save('get.npy',a)

这段代码使用 NumPy 库创建一个长度为 5 的一维数组 a，并将其保存为名为 get.npy 的文件。...import numpy as np b = np.load('get.npy') print(b) 输出结果为：[0 1 2 3 4]，即数组 a 中的元素。

from sklearn.datasets import load_iris from sklearn.tree import DecisionTreeClassifier from sklearn.model_selection import train_test_split from sklearn.metrics import accuracy_score,confusion_matrix import numpy as np # 导入iris数据集 iris = load_iris() # 提取数据集中的特征数据 X = iris.data # 提取label y = iris.target # 划分训练集和测试集 X_train,X_test,y_train,y_test = train_test_split(X,y,random_state=42,test_size=0.5,stratify=y) # 导入决策树，设置参数，最大深度为3，使用gini系数 tree = DecisionTreeClassifier(criterion='gini', max_depth=3, random_state=42) # 拟合训练集 tree.fit(X_train,y_train) # 预测测试集 y_predict = tree.predict(X_test) # 计算准确率 accuracy = accuracy_score(y_test,y_predict) # 混淆矩阵 cm = confusion_matrix(y_test,y_predict) TP = np.diag(cm) FN = cm.sum(axis=1) - np.diag(cm) FP = cm.sum(axis=0) - np.diag(cm) TN = cm.sum() - (TP+FN+FP) recall = TP / (TP+FN) # Overall Accuracy OA = (TP+TN) / (TP+FN+FP+TN) print(OA) # Average Accuracy AA = recall.sum() / len(recall) print(AA)将每个部分分析一下

import numpy as np 这里导入了scikit-learn的iris数据集、决策树分类器、数据集划分函数、准确率和混淆矩阵评估指标以及numpy库。 2. 提取数据集中的特征数据和标签数据： iris = load_iris() X = iris....

import numpy as np x=np.random.randn(1000,2) w=np.array([[1],[2]]) b=-3 y=x*w+b print(y)

import numpy as np # generate random data x = np.random.randn(1000,2) w = np.array([[1],[2]]) b = -3 # compute output y = np.dot(x, w) + b print(y) In this code, we first import the numpy ...

# 导入需要的库import pandas as pdimport numpy as npfrom sklearn import linear_modelfrom sklearn.model_selection import train_test_split# 读取数据data = pd.read_csv('diabetes.csv')# 将数据拆分为特征和目标变量X = data.iloc[:, :-1]y = data.iloc[:, -1]# 将数据拆分为训练集和测试集X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=0)# 创建线性回归模型model = linear_model.LinearRegression()# 训练模型model.fit(X_train, y_train)# 预测测试集数据y_pred = model.predict(X_test)# 计算模型的准确率accuracy = model.score(X_test, y_test)print("模型准确率:", accuracy)，优化这段代码

import numpy as np from sklearn import linear_model from sklearn.model_selection import train_test_split # 读取数据 data = pd.read_csv('./diabetes.csv', header=0) # 将数据拆分为训练集和测试集 X_...

导入波士顿房价数据集，计算房价的最小值，最大值，均值，中位数，方差，标准差，协方差。 import sklearn.datasets as datasets import pandas as pd import numpy as np boston=datasets.load_boston()#导入数据集

import numpy as np boston = datasets.load_boston() # 导入波士顿房价数据集 # 将数据集转化为DataFrame格式 boston_df = pd.DataFrame(boston.data,columns=boston.feature_names) # 添加目标值MEDV boston_df...

import numpy as npimport randomrandom_list = [random.randint(0, 9) for _ in range(88200)]np_array = np.array(random_list)这段代码得到的结果怎么变成浮点数类型

import numpy as np import random random_list = [random.randint(0, 9) for _ in range(88200)] np_array = np.array(random_list) # 将 np_array 转换为浮点数类型的数组 np_float_array = np_array.astype(np....

import pandas as pd import numpy as np import os from sklearn.datasets import load_breast_cancer cancer_data = load_breast_cancer() cancer_data.head()

import numpy as np from sklearn.datasets import load_breast_cancer cancer_data = load_breast_cancer() df = pd.DataFrame(data=np.c_[cancer_data['data'], cancer_data['target']], columns=list(cancer_...

import pandas as pd data = pd.read_csv('gdpcost.csv') import numpy as np from sklearn.model_selection import train_test_split # 将数据拆分成训练集和测试集 train_data, test_data, train_labels, test_labels = train_test_split(data['GDP'].values, data['Cost'].values, test_size=0.2) # 将数据转换为 NumPy 数组并进行标准化处理 train_data = (train_data - np.mean(train_data)) / np.std(train_data) test_data = (test_data - np.mean(train_data)) / np.std(train_data) train_labels =(train_labels - np.mean(train_labels)) / np.std(train_labels) test_labels= (test_labels - np.mean(train_labels)) / np.std(train_labels) # 将数据转换为 NumPy 数组并进行重塑 train_data = train_data.reshape(-1, 1) test_data = test_data.reshape(-1, 1) train_labels = train_labels.reshape(-1, 1) test_labels = test_labels.reshape(-1, 1) from keras.models import Sequential from keras.layers import Dense # 定义模型 model = Sequential() model.add(Dense(10, activation='relu', input_shape=(1,))) model.add(Dense(1)) # 编译模型 model.compile(optimizer='adam', loss='mse') # 训练模型 model.fit(train_data, train_labels, epochs=100, batch_size=32) # 评估模型 loss = model.evaluate(test_data, test_labels) print('Test loss:', loss)请解释每行代码

3. import numpy as np：导入 numpy 库并给它取别名 np。 4. from sklearn.model_selection import train_test_split：从 sklearn 库中导入 train_test_split 方法，用于拆分数据集成训练集和测试集。 5. train...

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