planning_time_limit: 10.0 max_iterations: 200 max_iterations_after_collision_free: 5 smoothness_cost_weight: 0.1 obstacle_cost_weight: 1.0 learning_rate: 0.01 smoothness_cost_velocity: 0.0 smoothness_cost_acceleration: 1.0 smoothness_cost_jerk: 0.0 ridge_factor: 0.01 use_pseudo_inverse: false pseudo_inverse_ridge_factor: 1e-4 joint_update_limit: 0.1 collision_clearence: 0.2 collision_threshold: 0.07 use_stochastic_descent: true enable_failure_recovery: true max_recovery_attempts: 5

yicuansuanfa.rar_genetic iterations

遗传算法可以通过多次迭代寻找全局最优解，功能交一般的线性规划求解模型更强大

GeneticAlgorithm.rar_genetic iterations_函数优化遗传算法_遗传算法 _遗传算法函数

用遗传算法解决函数优化问题原代码求出最优解与迭代次数

def underwater_image_enhancement(image): # 定义一些常量 alpha = 1.5 # 对比度增强系数 beta = 20 # 亮度增强系数 lambda_ = 0.2 # 模糊程度系数 limit = 2.0 # 限制像素缩放的系数 # 对比度增强 image_contrast = cv2.addWeighted(image, alpha, np.zeros(image.shape, image.dtype), 0, 0) # 亮度增强 image_bright = cv2.add(image_contrast, beta) # 颜色平衡 max_b = np.max(image_bright[:, :, 0]) max_g = np.max(image_bright[:, :, 1]) max_r = np.max(image_bright[:, :, 2]) max_value = max(max_b, max_g, max_r) if max_value > 1.0: image_bright[:, :, 0] = image_bright[:, :, 0] / max_value image_bright[:, :, 1] = image_bright[:, :, 1] / max_value image_bright[:, :, 2] = image_bright[:, :, 2] / max_value # 去雾 gray_image = cv2.cvtColor(image_bright, cv2.COLOR_BGR2GRAY) mean_gray = np.mean(gray_image) std_gray = np.std(gray_image) threshold = max(0, mean_gray - std_gray * lambda_) _, foreground_mask = cv2.threshold(gray_image, threshold, 255, cv2.THRESH_BINARY) kernel = cv2.getStructuringElement(cv2.MORPH_ELLIPSE, (3, 3)) foreground_mask = cv2.erode(foreground_mask, kernel, iterations=1) background = cv2.medianBlur(image_bright, 21) foreground = cv2.medianBlur(image_bright, 3) foreground = cv2.addWeighted(foreground, limit, background, 1 - limit, 0) result = cv2.bitwise_and(foreground, foreground, mask=foreground_mask) return result

这段代码实现了一种用于增强水下图像的算法。具体而言，它包括以下步骤： 1. 对比度增强：通过对原始图像进行加权相加操作，增加图像的对比度。 2. 亮度增强：在对比度增强的基础上，通过加上一个偏移量来增加图像...

逐行解释：opencv_ml_svm: format: 3 svmType: C_SVC kernel: type: INTER gamma: 1. C: 1. term_criteria: { epsilon:1.1920928955078125e-07, iterations:1000 } var_count: 400 class_count: 31 class_labels: !!opencv-matrix rows: 31 cols: 1 dt: i

这段代码是使用OpenCV中的机器学习模块（opencv_ml）中的支持向量机（SVM）算法（svm）进行训练的。以下是每个参数的解释： - format：表示SVM存储格式的版本号。 - svmType：SVM的类型，这里是C_SVC，表示一般的...

如果输入层和隐藏层神经元数均改为5，这段代码怎么改# 第1种取数据方法： X = data_set.iloc[:, 0:20].values.T # 前四列是特征，T表示转置 Y = data_set.iloc[:, 20:].values.T # 后三列是标签 Y = Y.astype('uint8') # 开始训练 start_time = datetime.datetime.now() # 输入20个节点，隐层20个节点，输出1个节点，迭代75000次 parameters = nn_model(X, Y, n_h=20, n_input=20, n_output=1, num_iterations=75000, print_cost=True) end_time = datetime.datetime.now() print("用时：" + str((end_time - start_time).seconds) + 's' + str(round((end_time - start_time).microseconds / 1000)) + 'ms') # 对模型进行测试 # data_test = pd.read_csv('D:\\iris_classification_BPNeuralNetwork-master\\bpnn_V2数据集\\iris_test.csv', header=None) data_test = pd.read_csv('E:\\Program\\nnbc1\\test.csv', header=None) x_test = data_test.iloc[:, 0:20].values.T y_test = data_test.iloc[:, 20:].values.T y_test = y_test.astype('uint8')

parameters = nn_model(X, Y, n_h=5, n_input=5, n_output=1, num_iterations=75000, print_cost=True) 同时，需要修改X的维数，将其改为(5, m)，如下所示： X = data_set.iloc[:, 0:5].values.T.reshape...

根据前端传过来的前端传递过来的开始时间和结束时间参数筛选创建时间在开始时间和结束时间区间的数据修改后端写法def get_bugs_data(): api_url = "https://api.tapd.cn/bugs" api_headers = {"Authorization": "#", "content-type": "application/json"}iterations_url = "https:/"count_url ="https://at" params_count = {"status": "closed","workspace_id": 41571821, } # 发送请求，获取缺陷总数 response = requests.get(count_url, params=params_count, headers=api_headers) if response.status_code == 200: total_bug = response.json()total_count = total_bug['data']['count'] print(total_count) else: print("Error: Failed to retrieve count. Status code: ", response.status_code) start_time = request.get('start_time') end_time = request.get('end_time') start_time =datetime.strptime(start_time, '%Y-%m-%d %H:%M:%S') end_time = datetime.strptime(end_time, '%Y-%m-%d %H:%M:%S') bug_list = [] for i in range(1,total_count//200): params = {"limit": 200, "status": "closed", "workspace_id": 41571821, "page": i } response = requests.get(api_url, params=params, headers=api_headers) if response.status_code == 200: res = response.json() for bug_item in res['data']: if bug_item['Bug']['fixer'] and bug_item['Bug']['fixer'] in white_name:bug_data_dict = {"bug_title": bug_item['Bug']['title'], "bug_created": bug_item['Bug']['created'], "bug_fixer": bug_item['Bug']['fixer'], "bug_resolved": bug_item['Bug']['resolved'], "bug_url": f"https://www.tapd.cn/41571821/bugtrace/bugs/view?bug_id={bug_item['Bug']['id']}" } params_iteration = {"limit": 200, "workspace_id": 41571821, "id": bug_item['Bug']['iteration_id'] }response =requests.get(iterations_url, params=params_iteration, headers=api_headers)if response.status_code == 200: iterations = response.json() iteration_name = iterations['data'][0]['Iteration']['name'] bug_data_dict['iteration_name'] = iteration_name bug_list.append(bug_data_dict) else: print("Error: Failed to retrieve iterations. Status code: ", response.status_code) return {"code": 200, "msg": "成功", "data": bug_list}

params = {"limit": 200, "status": "closed", "workspace_id": 41571821, "page": i} response = requests.get(api_url, params=params, headers=api_headers) if response.status_code == 200: res = response...

with tf.Session() as sess: sess.run(init) saver = tf.train.Saver() train_writer = tf.summary.FileWriter(log_dir+'/train',sess.graph) test_writer = tf.summary.FileWriter(log_dir+'/test') step = 1 coord = tf.train.Coordinator() threads = tf.train.start_queue_runners(sess, coord) print('doing1') # Keep training until reach max iterations try: while step * batch_size <= training_iters: # print('doing2') batch_xs, batch_ys = sess.run([hrrp_batch, label_batch]) # print(batch_xs.shape) # print(batch_ys.shape) # 获取批数据 sess.run(optimizer, feed_dict={x: batch_xs, y: batch_ys, keep_prob: dropout}) if step % display_step == 0: summary= sess.run(merged, feed_dict={x: batch_xs, y: batch_ys, keep_prob: 1.}) test_writer.add_summary(summary, step) # 计算精度 acc = sess.run(accuracy, feed_dict={x: batch_xs, y: batch_ys, keep_prob: 1.}) # 计算损失值 loss = sess.run(cost, feed_dict={x: batch_xs, y: batch_ys, keep_prob: 1.}) 所选择的特征是

在这段代码中，没有涉及到特征的选择。这段代码是用于在 TensorFlow 中训练一个神经网络模型的。在这段代码中，使用了一个数据队列来读取数据，其中 hrrp_batch 和 label_batch 是从数据队列中读取的批量数据。...

用opencv 重写 fit_line_contour_xld(Contours : : Algorithm, MaxNumPoints, ClippingEndPoints, Iterations, ClippingFactor : RowBegin, ColBegin, RowEnd, ColEnd, Nr, Nc, Dist)

pt1 = (int(cols * 0.1), int(cols * 0.1 * k + b)) pt2 = (int(cols * 0.9), int(cols * 0.9 * k + b)) cv2.line(img, pt1, pt2, (0, 255, 0), 2) # 显示图像 cv2.imshow('image', img) cv2.waitKey(0) cv2....

D:\Python311\Lib\site-packages\sklearn\linear_model\_coordinate_descent.py:617: ConvergenceWarning: Objective did not converge. You might want to increase the number of iterations. Duality gap: 1807.7527351657197, tolerance: 1598.3259543826698 model = cd_fast.enet_coordinate_descent_gram( D:\Python311\Lib\site-packages\sklearn\linear_model\_coordinate_descent.py:617: ConvergenceWarning: Objective did not converge. You might want to increase the number of iterations. Duality gap: 1808.192864873145, tolerance: 1598.3259543826698 model = cd_fast.enet_coordinate_descent_gram( D:\Python311\Lib\site-packages\sklearn\linear_model\_coordinate_descent.py:617: ConvergenceWarning: Objective did not converge. You might want to increase the number of iterations. Duality gap: 1808.489093720222, tolerance: 1598.3259543826698 model = cd_fast.enet_coordinate_descent_gram(

这是一个 Python 中使用 scikit-learn 库进行线性回归时出现的警告信息，提示模型在迭代过程中未达到收敛，建议增加迭代次数。其中“duality gap”表示对偶间隙，是优化问题的一个指标，表示当前解与最优解之间的...

class PSO_VRP: def init(self, num_particles, num_iterations, num_customers, max_capacity, max_distance, distances, demands): self.num_particles = num_particles self.num_iterations = num_iterations self.num_customers = num_customers self.max_capacity = max_capacity self.max_distance = max_distance self.distances = distances self.demands = demands self.global_best_fitness = float('inf') self.global_best_position = [0] * num_customers self.particles = [] def initialize_particles(self): for _ in range(self.num_particles): particle = Particle(self.num_customers, self.max_capacity, self.max_distance) self.particles.append(particle) def update_particles(self): for particle in self.particles: for i in range(len(particle.position)): r1 = random.random() r2 = random.random() particle.velocity[i] = 0.5 * particle.velocity[i] + 2 * r1 * (particle.best_position[i] - particle.position[i]) + 2 * r2 * (self.global_best_position[i] - particle.position[i]) particle.velocity[i] = int(particle.velocity[i]) if particle.velocity[i] < 0: particle.velocity[i] = 0 elif particle.velocity[i] > self.num_customers - 1: particle.velocity[i] = self.num_customers - 1 particle.position = [(particle.position[i] + particle.velocity[i]) % (self.num_customers + 1) for i in range(len(particle.position))] def update_global_best(self): for particle in self.particles: if particle.best_fitness < self.global_best_fitness: self.global_best_fitness = particle.best_fitness self.global_best_position = particle.best_position.copy() def solve(self): self.initialize_particles() for _ in range(self.num_iterations): for particle in self.particles: particle.evaluate_fitness(self.distances, self.demands) self.update_global_best() self.update_particles() return self.global_best_position, self.global_best_fitness添加注释

具体来说，代码中定义了一个PSO_VRP类，其中包括了num_particles（粒子个数）、num_iterations（迭代次数）、num_customers（顾客数量）、max_capacity（车辆最大容量）、max_distance（车辆最大行驶距离）、...

import numpy as np from platypus import NSGAII, Problem, Real, Integer # 定义问题 class JobShopProblem(Problem): def init(self, jobs, machines, processing_times): num_jobs = len(jobs) num_machines = len(machines[0]) super().init(num_jobs, 1, 1) self.jobs = jobs self.machines = machines self.processing_times = processing_times self.types[:] = Integer(0, num_jobs - 1) self.constraints[:] = [lambda x: x[0] == 1] def evaluate(self, solution): job_order = np.argsort(np.array(solution.variables[:], dtype=int)) machine_available_time = np.zeros(len(self.machines)) job_completion_time = np.zeros(len(self.jobs)) for job_idx in job_order: job = self.jobs[job_idx] for machine_idx, processing_time in zip(job, self.processing_times[job_idx]): machine_available_time[machine_idx] = max(machine_available_time[machine_idx], job_completion_time[job_idx]) job_completion_time[job_idx] = machine_available_time[machine_idx] + processing_time solution.objectives[:] = [np.max(job_completion_time)] # 定义问题参数 jobs = [[0, 1], [2, 0], [1, 2]] machines = [[0, 1, 2], [1, 2, 0], [2, 0, 1]] processing_times = [[5, 4], [3, 5], [1, 3]] # 创建算法实例 problem = JobShopProblem(jobs, machines, processing_times) algorithm = NSGAII(problem) algorithm.population_size = 100 # 设置优化目标 problem.directions[:] = Problem.MINIMIZE # 定义算法参数 algorithm.population_size = 100 max_generations = 100 mutation_probability = 0.1 # 设置算法参数 algorithm.max_iterations = max_generations algorithm.mutation_probability = mutation_probability # 运行算法 algorithm.run(max_generations) # 输出结果 print("最小化的最大完工时间：", algorithm.result[0].objectives[0]) print("工件加工顺序和机器安排方案：", algorithm.result[0].variables[:]) 请检查上述代码

algorithm.max_iterations = max_generations algorithm.mutation_probability = mutation_probability # 运行算法 algorithm.run(max_generations) # 输出结果 print("最小化的最大完工时间：", algorithm.result...

while rounds < max_iterations: rounds += 1 solutions = [] for _ in range(optimizer.population_size): x = optimizer.ask() x[0] = int(x[0]) x[1] = int(x[1]) # 添加随机扰动，以扩大搜索空间 x[2] += random.uniform(-0.1, 0.1) x[3] += random.uniform(-0.1, 0.1) # 检查解向量是否在搜索空间内 if (x[0] < Min_pump_zcjj or x[0] > Max_pump_zcjj or x[1] < Min_pump_bdljd or x[1] > Max_pump_bdljd or x[2] < Min_pump_bdwz or x[2] > Max_pump_bdwz or x[3] < Min_pump_skhd or x[3] > Max_pump_skhd): continue if (x[0] == 51 and x[1] == 51) or (x[0] == 26 and x[1] == 26): continue value = quadratic(x[0], x[1], x[2], x[3]) solutions.append((x, value))

while rounds < max_iterations: rounds += 1 solutions = [] 这是一个 while 循环，用于控制优化器的迭代次数。rounds 表示当前迭代的轮数，max_iterations 表示设定的最大迭代次数。solutions 表示...

/usr/local/lib/python3.6/site-packages/sklearn/neural_network/_multilayer_perceptron.py:500: ConvergenceWarning: lbfgs failed to converge (status=1): STOP: TOTAL NO. of ITERATIONS REACHED LIMIT. Increase the number of iterations (max_iter) or scale the

这个问题是关于使用Scikit-learn库中的多层感知器（Multilayer ...为了解决这个问题，你可以尝试增加最大迭代次数（max_iter），或者对数据进行特征缩放，或者尝试其他优化器（如Adam或SGD）等方法来训练模型。

class NeuralNetwork: def init(self, layers_strcuture, print_cost = False): self.layers_strcuture = layers_strcuture self.layers_num = len(layers_strcuture) self.param_layers_num = self.layers_num - 1 self.learning_rate = 0.0618 self.num_iterations = 2000 self.x = None self.y = None self.w = dict() self.b = dict() self.costs = [] self.print_cost = print_cost self.init_w_and_b() def set_learning_rate(self,learning_rate): self.learning_rate=learning_rate def set_num_iterations(self, num_iterations): self.num_iterations = num_iterations def set_xy(self, input, expected_output): self.x = input self.y = expected_output

- print_cost: 表示是否打印每次迭代的损失值该类还包含了一些其他方法，包括set_learning_rate()、set_num_iterations()和set_xy()等，用于设置神经网络的学习率、迭代次数和输入数据等。这些方法可以在实例化该...

MAX_ITERATIONS = 300 iteration = 0 while sp_obj <= -tol:#就是如果子问题的目标函数值小于0，人家才会迭代的意思吗？np.abs(reduced_cost) <= TOL or reduced_cost >= 0 route_sequence.append(new_path) pi,obj,include,route_cost=rmp(customer_number,route_sequence) sp_obj,new_path,new_path_cost,x_mat =sp(customer_number,vertex_number,ready_time,due_time,vehicle_capacity, vehicle_number,demand,B,pi) iteration += 1 print('目前的迭代次数为：',iteration) if iteration == MAX_ITERATIONS: print("Reached maximum number of iterations.")这个代码中为什么if函数不起作用

根据你提供的代码，if函数应该是起作用的。但是需要注意的是，if函数仅在while循环结束后执行一次，而不是在每次循环迭代时...同时，你可以检查一下MAX_ITERATIONS和tol的值是否合理，以及reduced_cost的计算是否正确。

def kmeans(X, k, max_iterations=20): n_samples = X.shape[0] centroids = X[np.random.choice(n_samples, k, replace=False)] for i in range(max_iterations): clusters = [[] for _ in range(k)] for sample_id, sample in enumerate(X): closest_centroid = np.argmin(np.sqrt(np.sum((sample - centroids)**2, axis=1))) clusters[closest_centroid].append(sample_id) prev_centroids = centroids for j, cluster in enumerate(clusters): centroids[j] = np.mean(X[cluster], axis=0) if np.allclose(prev_centroids, centroids): break return centroids, clusters

这是一个 K-Means 聚类的 Python 实现，输入参数 X ...max_iterations 表示最大迭代次数，如果在迭代次数内聚类中心不再发生变化，则停止迭代。函数会返回最终的聚类中心 centroids，以及每个样本所属的类别 clusters。

以下这段代码是关于CatBoost模型的超参数调整，但里面好像不是在五倍交叉验证下做的分析，请问应该怎么加上五倍交叉验证呢？import os import time import pandas as pd from catboost import CatBoostRegressor from hyperopt import fmin, hp, partial, Trials, tpe,rand from sklearn.metrics import r2_score, mean_squared_error from sklearn.model_selection import train_test_split from sklearn.model_selection import KFold, cross_val_score as CVS, train_test_split as TTS 自定义hyperopt的参数空间 space = {"iterations": hp.choice("iterations", range(1, 30)), "depth": hp.randint("depth", 16), "l2_leaf_reg": hp.randint("l2_leaf_reg", 222), "border_count": hp.randint("border_count", 222), 'learning_rate': hp.uniform('learning_rate', 0.001, 0.9), } data = pd.read_csv(r"E:\exercise\synthesis\synthesis_dummy_2.csv") #验证随机森林填补缺失值方法是否有效 X = data.iloc[:,1:] y = data.iloc[:,0] Xtrain,Xtest,Ytrain,Ytest = TTS(X_wrapper,y,test_size=0.2,random_state=100) def epoch_time(start_time, end_time): elapsed_secs = end_time - start_time elapsed_mins = elapsed_secs / 60 return elapsed_mins, elapsed_secs 自动化调参并训练 def cat_factory(argsDict): estimator = CatBoostRegressor(loss_function='RMSE', random_seed=22, learning_rate=argsDict['learning_rate'], iterations=argsDict['iterations'], l2_leaf_reg=argsDict['l2_leaf_reg'], border_count=argsDict['border_count'], depth=argsDict['depth'], verbose=0) estimator.fit(Xtrain, Ytrain) val_pred = estimator.predict(Xtest) mse = mean_squared_error(Ytest, val_pred) return mse

要在这段代码中添加五倍交叉验证，你...best = fmin(fn=cat_factory, space=space, algo=tpe.suggest, max_evals=100, trials=trials) 这样，你就在代码中添加了五倍交叉验证来评估CatBoost模型的超参数调整效果。

import pandas as pd import warnings import sklearn.datasets import sklearn.linear_model import matplotlib import matplotlib.font_manager as fm import matplotlib.pyplot as plt import numpy as np import seaborn as sns data = pd.read_excel(r'C:\Users\Lenovo\Desktop\data.xlsx') print(data.info()) fig = plt.figure(figsize=(10, 8)) sns.heatmap(data.corr(), cmap="YlGnBu", annot=True) plt.title('相关性分析热力图') plt.rcParams['axes.unicode_minus'] = False plt.rcParams['font.sans-serif'] = 'SimHei' plt.show() y = data['y'] x = data.drop(['y'], axis=1) print('输出新的特征集数据***') print(x.head()) from sklearn.model_selection import train_test_split x_train, x_test, y_train, y_test = train_test_split(x, y, test_size=0.2, random_state=42) def relu(x): output=np.maximum(0, x) return output def relu_back_propagation(derror_wrt_output,x): derror_wrt_dinputs = np.array(derror_wrt_output, copy=True) derror_wrt_dinputs[x <= 0] = 0 return derror_wrt_dinputs def activated(activation_choose,x): if activation_choose == 'relu': return relu(x) def activated_back_propagation(activation_choose, derror_wrt_output, output): if activation_choose == 'relu': return relu_back_propagation(derror_wrt_output, output) class NeuralNetwork: def init(self, layers_strcuture, print_cost = False): self.layers_strcuture = layers_strcuture self.layers_num = len(layers_strcuture) self.param_layers_num = self.layers_num - 1 self.learning_rate = 0.0618 self.num_iterations = 2000 self.x = None self.y = None self.w = dict() self.b = dict() self.costs = [] self.print_cost = print_cost self.init_w_and_b() def set_learning_rate(self,learning_rate): self.learning_rate=learning_rate def set_num_iterations(self, num_iterations): self.num_iterations = num_iterations def set_xy(self, input, expected_output): self.x = input self.y = expected_output

这段代码存在两个问题： ... def set_num_iterations(self, num_iterations): self.num_iterations = num_iterations def set_xy(self, input, expected_output): self.x = input self.y = expected_output

for t in range(num_iterations): TypeError: 'float' object cannot be interpreted as an integer

这个错误通常发生在使用range()函数时，参数应该是整数类型，但是传入了一个浮点数。请检查代码中使用range()函数...num_iterations = int(num_iterations_float) for t in range(num_iterations): # do something

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逐行解释：opencv_ml_svm: format: 3 svmType: C_SVC kernel: type: INTER gamma: 1. C: 1. term_criteria: { epsilon:1.1920928955078125e-07, iterations:1000 } var_count: 400 class_count: 31 class_labels: !!opencv-matrix rows: 31 cols: 1 dt: i

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/usr/local/lib/python3.6/site-packages/sklearn/neural_network/_multilayer_perceptron.py:500: ConvergenceWarning: lbfgs failed to converge (status=1): STOP: TOTAL NO. of ITERATIONS REACHED LIMIT. Increase the number of iterations (max_iter) or scale the

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给定不超过6的正整数A，考虑从A开始的连续4个数字。请输出所有由它们组成的无重复数字的3位数。编写一个C语言程序

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