N = len(RV_5min) - 1 RV_real_pred = np.zeros(N+1) RV_real_uub = np.zeros(N+1) RV_real_llb = np.zeros(N+1) RV_real_pred[0] = RV_5min[0] RV_real_uub[0] = RV_5min[0] RV_real_llb[0] = RV_5min[0] alpha=0.05 z_alpha = norm.ppf(1-alpha/2) for i in range(N): RV_real_pred[i+1] = c + beta*RV_5min[i] RV_real_uub[i+1] = RV_real_pred[i+1] + z_alpha*np.sqrt(np.var(RV_diff))*np.sqrt(1+beta**2) RV_real_llb[i+1] = RV_real_pred[i+1] - z_alpha*np.sqrt(np.var(RV_diff))*np.sqrt(1+beta**2) plt.plot(RV_5.index, np.maximum(0, RV_real_pred), 'k:') plt.plot(RV_5.index, np.maximum(0, RV_real_uub), 'r--', RV_5.index, np.maximum(0, RV_real_llb), 'r--') plt.xlabel('Time') plt.ylabel('RV') plt.legend(['Predicted', 'Upper Bound', 'Lower Bound']) plt.show() 画图x和y的长度不一样怎么改

C++11条件变量condition_variable详解与使用

wait(unique_lock<mutex>& _Lck, Predicate Pred)：在等待之前，先检查谓词Pred，如果谓词返回false，线程才会进入等待状态。这有助于避免因虚假唤醒（spurious wakeups）而错误地提前恢复执行。 5. **...

二芳基三嗪类HIV-1逆转录酶抑制剂的分子对接与3D-QSAR分析

"二芳基三嗪类HIV-1逆转录酶抑制剂的分子对接及3D-QSAR研究" 本文主要探讨了二芳基三嗪类化合物作为HIV-1逆转录酶抑制剂的分子对接及3D-定量构效关系(3D-QSAR)研究。这一研究对于理解这类药物的作用机制、优化药物...

%AR（1）预测 % 计算AR(1)模型参数 RV_diff = diff(RV_real); X_ar = RV_real(2:end)'; Y_ar = RV_real(1:end-1)'; beta = 0.8; c = 0; RV_real_pred = zeros(1,N+1); RV_real_uub = zeros(1,N+1); RV_real_llb = zeros(1,N+1); RV_real_pred(1) = RV_real(1); RV_real_uub(1) = RV_real(1); RV_real_llb(1) = RV_real(1); for i = 1:N RV_real_pred(i+1) = c + betaRV_real(i); RV_real_uub(i+1) = RV_real_pred(i+1) + z_alphasqrt(var(RV_diff))sqrt(1+beta^2); RV_real_llb(i+1) = RV_real_pred(i+1) - z_alphasqrt(var(RV_diff))*sqrt(1+beta^2); end % 绘制图形 t = 0:dt:T; hold on; plot(t,max(0,RV_real_pred),'k:'); plot(t,max(0,RV_real_uub),'r--',t,max(0,RV_real_llb),'r--'); 改成python代码

RV_real_uub[i+1] = RV_real_pred[i+1] + z_alpha*np.sqrt(np.var(RV_diff))*np.sqrt(1+beta**2) RV_real_llb[i+1] = RV_real_pred[i+1] - z_alpha*np.sqrt(np.var(RV_diff))*np.sqrt(1+beta**2) # Plot the ...

def competition_log_loss(y_true, y_pred): N_0 = np.sum(1 - y_true) N_1 = np.sum(y_true) p_1 = np.clip(y_pred, 1e-15, 1 - 1e-15) p_0 = 1 - p_1 log_loss_0 = -np.sum((1 - y_true) * np.log(p_0)) / N_0 log_loss_1 = -np.sum(y_true * np.log(p_1)) / N_1 return (log_loss_0 + log_loss_1)/2 def balanced_log_loss(y_true, y_pred): N_0 = np.sum(1 - y_true) N_1 = np.sum(y_true) p_1 = np.clip(y_pred, 1e-15, 1 - 1e-15) p_0 = 1 - p_1 log_loss_0 = -np.sum((1 - y_true) * np.log(p_0)) log_loss_1 = -np.sum(y_true * np.log(p_1)) w_0 = 1 / N_0 w_1 = 1 / N_1 balanced_log_loss = 2(w_0 log_loss_0 + w_1 * log_loss_1) / (w_0 + w_1) return balanced_log_loss/(N_0+N_1)

它首先计算了目标变量中正类和负类的样本数量，然后通过对预测概率进行裁剪（使用np.clip函数）来避免概率为0或1的情况。接下来，根据真实值和预测概率计算了两个类别的对数损失，并将两个损失值求平均。 ...

len1 = 0 len2 = 0 for i in range(len(X_test)): len20 = 0 len1 = len1+ len(X_test[i]) for j in range(len(X_test[i])): if (y_Pred[i-1][j-1]==y_test[i-1][j-1]): len20 = len20 + 1 len2 = len2 + len20为什么 if (y_Pred[i-1][j-1]==y_test[i-1][j-1]): IndexError: list index out of range

这段代码中出现了 IndexError: list index out of range 错误...这可能是由于 i 或 j 的值超出了 X_test 或 y_Pred 或 y_test 列表的索引范围所致。你需要检查循环的索引范围是否正确，并确保它们不会超出列表的边界。

def discriminator_loss(self, x, z): y_real = self.discriminator_model(x) discriminator_loss_real = self._bce(y_true=ones_like(y_real), y_pred=y_real) y_fake = self.adversarial_supervised(z) discriminator_loss_fake = self._bce(y_true=zeros_like(y_fake), y_pred=y_fake) y_fake_e = self.adversarial_embedded(z) discriminator_loss_fake_e = self._bce(y_true=zeros_like(y_fake_e), y_pred=y_fake_e) return (discriminator_loss_real + discriminator_loss_fake + self.gamma * discriminator_loss_fake_e)

在函数中，首先通过鉴别器模型对真实样本进行预测，得到y_real。然后使用二元交叉熵损失函数 _bce 计算真实样本的鉴别器损失 discriminator_loss_real。接下来，通过对生成样本使用两个不同的辅助鉴别器模型...

def call(self, pred, label): B = len(label) pred_shape = pred.shape repeat = pred.shape[1]//3200 pred = pred.view(pred_shape[0]repeat, pred_shape[1]//repeat) label = torch.stack([label]repeat, dim=1).view(B*repeat) B = len(label) pred = self.model(pred) max_data, max_idx = torch.topk(pred, k=2, dim=1) pred_true = max_idx[:,0]==label pred_false = max_idx[:, 0] != label loss_true = pred[torch.arange(B), label][pred_true]-pred[torch.arange(B), max_idx[:, 1]][pred_true]+self.margin loss_true = torch.sum(loss_true.mul(self.mul))/(len(loss_true)+1e-5) loss_false = (pred[torch.arange(B), label][pred_false]-pred[torch.arange(B), max_idx[:,0]][pred_false]+self.margin) loss_false = loss_false[loss_false>0] loss_false = torch.sum(loss_false.mul(self.mul))/(len(loss_false)+1e-5) loss = loss_true + loss_false return loss

首先计算 Batch size B 和预测结果的形状 pred_shape，然后根据 repeat 变量将预测结果 pred 和标签 label 进行重复，以便与原始的输入数据形状匹配。然后将预测结果 pred 输入到模型 self.model 中进行计算，得到...

def error_compoute(y_pred_upper, y_pred_lower, y_tes, alpha): # Ravel for ease of computation y_pred_upper = y_pred_upper.ravel() y_pred_lower = y_pred_lower.ravel() y_tes = y_tes.ravel() # Find out of bound indices for WS idx_oobl = np.where((y_tes < y_pred_lower))[0] # 低于下限 # idx_oolu = np.where((y_tes >= y_pred_lower & y_tes <= y_pred_upper))[0] # 介于上下限之间 idx_oobu = np.where((y_tes > y_pred_upper))[0] # 高于上限 picp = np.sum((y_tes > y_pred_lower) & (y_tes <= y_pred_upper)) / len(y_tes) * 100 ace = picp - (1 - alpha) * 100 pinaw = np.sum(y_pred_upper - y_pred_lower) / (np.max(y_tes) - np.min(y_tes)) / len(y_tes) ws = np.sum(np.sum(-2 * alpha * (y_pred_upper - y_pred_lower)) + np.sum(-4 * (y_pred_lower[idx_oobl] - y_tes[idx_oobl])) + np.sum(-4 * (y_tes[idx_oobu] - y_pred_upper[idx_oobu]))) / len(y_tes) print("PICP: {:.4f}%".format(picp)) print("ACE: {:.4f}".format(ace)) print("PINAW: {:.4f}".format(pinaw)) print("WS: {:.4f}".format(ws))

接下来，通过计算 (y_tes > y_pred_lower) & (y_tes <= y_pred_upper) 来确定落在上下限之间的样本数量，并将其除以样本总数得到覆盖概率（PICP）。ACE 是覆盖概率与置信水平之差。 PINAW 是上下限范围的平均宽度...

def train(self, X, y): num_samples, num_features = X.shape # 初始化权重和偏置 self.weights = np.zeros(num_features) self.bias = 0 for _ in range(self.num_iterations): linear_model = np.dot(X, self.weights) + self.bias y_pred = self.sigmoid(linear_model) # 计算梯度 dw = (1 / num_samples) * np.dot(X.T, (y_pred - y)) db = (1 / num_samples) * np.sum(y_pred - y) # 添加正则化项 if self.regularization == 'l1': dw += (self.reg_strength / num_samples) * np.sign(self.weights) elif self.regularization == 'l2': dw += (self.reg_strength / num_samples) * self.weights # 更新权重和偏置 self.weights -= self.learning_rate * dw self.bias -= self.learning_rate * db

其中train函数用于训练模型，输入的X是一个n*m的矩阵，其中n是样本数，m是特征数；y是一个长度为n的向量，表示每个样本的标签；num_iterations表示迭代次数；regularization表示正则化方式，可以是'l1'或'l2'；reg_...

y_true = y_true.astype(np.int64) assert y_pred.size == y_true.size D = max(y_pred.max(), y_true.max()) + 1 w = np.zeros((D, D), dtype=np.int64) for i in range(y_pred.size): w[y_pred[i], y_true[i]] += 1 ind = linear_assignment(w.max() - w) return sum([w[i, j] for i, j in ind]) * 1.0 / y_pred.size

具体来说，y_pred和y_true分别表示模型的预测和真实标签，D等于两者中最大的标签加1，w是大小为DxD的矩阵，其中w[i, j]表示预测为i且真实标签为j的样本数量。然后通过匈牙利算法求解最大权匹配，得到ind表示最优匹配...

rf_pred = rf.predict(fuzzy_inputs) dnn_pred = dnn.predict(fuzzy_inputs) y_pred += (rf_pred + np.argmax(dnn_pred, axis=1)) / 2是什么意思

- y_pred = (rf_pred + np.argmax(dnn_pred, axis=1)) / 2 将随机森林模型和深度神经网络模型的预测结果进行融合。具体来说，对于每个样本，它们的预测值由两个模型的预测结果加权平均得到，其中随机森林模型的...

逐行注释下面这段代码： dx = delta[:, 0] / self.weights[0] dy = delta[:, 1] / self.weights[1] dw = delta[:, 2] / self.weights[2] dh = delta[:, 3] / self.weights[3] dw = torch.clamp(dw, max=self.bbox_xform_clip) dh = torch.clamp(dh, max=self.bbox_xform_clip) width = box[:, 2] - box[:, 0] height = box[:, 3] - box[:, 1] ctr_x = box[:, 0] + 0.5 * width ctr_y = box[:, 1] + 0.5 * height pred_ctr_x = dx * width + ctr_x pred_ctr_y = dy * height + ctr_y pred_w = torch.exp(dw) * width pred_h = torch.exp(dh) * height xmin = pred_ctr_x - 0.5 * pred_w ymin = pred_ctr_y - 0.5 * pred_h xmax = pred_ctr_x + 0.5 * pred_w ymax = pred_ctr_y + 0.5 * pred_h target = torch.stack((xmin, ymin, xmax, ymax), dim=1) return target

dy = delta[:, 1] / self.weights[1] # 计算 delta_y dw = delta[:, 2] / self.weights[2] # 计算 delta_w dh = delta[:, 3] / self.weights[3] # 计算 delta_h # 对 dw、dh 进行剪裁，限制在一个范围内 dw = torch...

import numpy as np from sklearn.datasets import load_iris from sklearn.model_selection import train_test_split import matplotlib.pyplot as plt # 加载 iris 数据 iris = load_iris() # 只选取两个特征和两个类别进行二分类 X = iris.data[(iris.target==0)|(iris.target==1), :2] y = iris.target[(iris.target==0)|(iris.target==1)] # 将标签转化为 0 和 1 y[y==0] = -1 # 将数据集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=42) # 实现逻辑回归算法 class LogisticRegression: def init(self, lr=0.01, num_iter=100000, fit_intercept=True, verbose=False): self.lr = lr self.num_iter = num_iter self.fit_intercept = fit_intercept self.verbose = verbose def __add_intercept(self, X): intercept = np.ones((X.shape[0], 1)) return np.concatenate((intercept, X), axis=1) def sigmoid(self, z): return 1 / (1 + np.exp(-z)) def loss(self, h, y): return (-y * np.log(h) - (1 - y) * np.log(1 - h)).mean() def fit(self, X, y): if self.fit_intercept: X = self.__add_intercept(X) # 初始化参数 self.theta = np.zeros(X.shape[1]) for i in range(self.num_iter): # 计算梯度 z = np.dot(X, self.theta) h = self.sigmoid(z) gradient = np.dot(X.T, (h - y)) / y.size # 更新参数 self.theta -= self.lr * gradient # 打印损失函数 if self.verbose and i % 10000 == 0: z = np.dot(X, self.theta) h = self.sigmoid(z) loss = self.__loss(h, y) print(f"Loss: {loss} \t") def predict_prob(self, X): if self.fit_intercept: X = self.__add_intercept(X) return self.__sigmoid(np.dot(X, self.theta)) def predict(self, X, threshold=0.5): return self.predict_prob(X) >= threshold # 训练模型 model = LogisticRegressio

n() model.fit(X_train, y_train) # 在测试集上进行预测 y_pred = model.predict(X_test) # 计算准确率 accuracy = np.sum(y_pred == y_test) / y_test.shape[0] print(f"Accuracy: {accuracy}") # 可视化...

s = self.psself.skip + self.Ck-1 + self.h-1 X1 = np.zeros((self.n-s, self.w, self.m)) # short term dataset X2 = np.zeros((self.n-s, self.psself.Ck, self.m)) # long term dataset Y = np.zeros((self.n-s, self.m)) # output dataset for i in range(s, self.n): t = i-self.h+1 X1[i-s] = self.raw[t-self.w:t].copy() idx = [] for k in range(self.ps): # 执行4次，每次间隔skip长，取Ck=6， total = 4 * 6 = 24 idx = list(range(t-self.Ck-kself.skip, t-kself.skip)) + idx idx = np.array(idx, dtype=int) X2[i-s] = self.raw[idx].copy() Y[i-s] = self.raw[i].copy() return X1, X2, Y 把这个单步预测改为多步预测结构

X2 = np.zeros((self.n-s, self.ps*self.Ck, self.m)) # long term dataset horizon = 3 # 预测的时间步数 Y = np.zeros((self.n-s-horizon, horizon, self.m)) # output dataset for i in range(s, self.n-...

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

下面是使用matplotlib绘制训练过程中的loss曲线的代码： python import matplotlib.pyplot as plt history = model.fit(X_train, y_train, validation_data=(X_test, y_test), epochs=100, batch_size=32) ...

class KNearestNeighbor(object): def init(self): pass def train(self, X, y): self.X_train = X self.y_train = y def predict(self, X, k=1): num_test = X.shape[0] num_train = self.X_train.shape[0] dists = np.zeros((num_test, num_train)) d1 = -2 * np.dot(X, self.X_train.T) d2 = np.sum(np.square(X), axis=1, keepdims=True) d3 = np.sum(np.square(self.X_train), axis=1) dist = np.sqrt(d1 + d2 + d3) y_pred = np.zeros(num_test) for i in range(num_test): dist_k_min = np.argsort(dist[i])[:k] y_kclose = self.y_train[dist_k_min] y_pred[i] = np.argmax(np.bincount(y_kclose.tolist())) return y_pred注释每一行代码

y_pred = np.zeros(num_test) # 创建一个长度为num_test的数组，用于存储预测结果 # 针对每个测试数据，选出距离最近的k个训练数据，并进行分类 for i in range(num_test): dist_k_min = np.argsort(dist[i])[:...

分析这个代码class OhemCrossEntropy(nn.Module): def init(self, ignore_label=-1, thres=0.7, min_kept=100000, weight=None): super(OhemCrossEntropy, self).init() self.thresh = thres self.min_kept = max(1, min_kept) self.ignore_label = ignore_label self.criterion = nn.CrossEntropyLoss( weight=weight, ignore_index=ignore_label, reduction='none' ) def _ce_forward(self, score, target): ph, pw = score.size(2), score.size(3) h, w = target.size(1), target.size(2) if ph != h or pw != w: score = F.interpolate(input=score, size=( h, w), mode='bilinear', align_corners=config.MODEL.ALIGN_CORNERS) loss = self.criterion(score, target) return loss def _ohem_forward(self, score, target, **kwargs): ph, pw = score.size(2), score.size(3) h, w = target.size(1), target.size(2) if ph != h or pw != w: score = F.interpolate(input=score, size=( h, w), mode='bilinear', align_corners=config.MODEL.ALIGN_CORNERS) pred = F.softmax(score, dim=1) pixel_losses = self.criterion(score, target).contiguous().view(-1) mask = target.contiguous().view(-1) != self.ignore_label tmp_target = target.clone() tmp_target[tmp_target == self.ignore_label] = 0 pred = pred.gather(1, tmp_target.unsqueeze(1)) pred, ind = pred.contiguous().view(-1,)[mask].contiguous().sort() min_value = pred[min(self.min_kept, pred.numel() - 1)] threshold = max(min_value, self.thresh) pixel_losses = pixel_losses[mask][ind] pixel_losses = pixel_losses[pred < threshold] return pixel_losses.mean() def forward(self, score, target): if config.MODEL.NUM_OUTPUTS == 1: score = [score] weights = config.LOSS.BALANCE_WEIGHTS assert len(weights) == len(score) functions = [self._ce_forward] * \ (len(weights) - 1) + [self._ohem_forward] return sum([ w * func(x, target) for (w, x, func) in zip(weights, score, functions) ])

min_kept表示每张图中保留的难样本最小数量；ignore_label表示忽略的标签；weight表示权重。_ce_forward函数实现了普通的交叉熵损失的计算；_ohem_forward函数实现了OHEM的计算。在forward函数中，对于有多个输出的...

import numpy as np import matplotlib.pyplot as plt import pickle as pkl import pandas as pd import tensorflow.keras from tensorflow.keras.models import Sequential, Model, load_model from tensorflow.keras.layers import LSTM, GRU, Dense, RepeatVector, TimeDistributed, Input, BatchNormalization, \ multiply, concatenate, Flatten, Activation, dot from sklearn.metrics import mean_squared_error,mean_absolute_error from tensorflow.keras.optimizers import Adam from tensorflow.python.keras.utils.vis_utils import plot_model from tensorflow.keras.callbacks import EarlyStopping from keras.callbacks import ReduceLROnPlateau df = pd.read_csv('lorenz.csv') signal = df['signal'].values.reshape(-1, 1) x_train_max = 128 signal_normalize = np.divide(signal, x_train_max) def truncate(x, train_len=100): in_, out_, lbl = [], [], [] for i in range(len(x) - train_len): in_.append(x[i:(i + train_len)].tolist()) out_.append(x[i + train_len]) lbl.append(i) return np.array(in_), np.array(out_), np.array(lbl) X_in, X_out, lbl = truncate(signal_normalize, train_len=50) X_input_train = X_in[np.where(lbl <= 9500)] X_output_train = X_out[np.where(lbl <= 9500)] X_input_test = X_in[np.where(lbl > 9500)] X_output_test = X_out[np.where(lbl > 9500)] # Load model model = load_model("model_forecasting_seq2seq_lstm_lorenz.h5") opt = Adam(lr=1e-5, clipnorm=1) model.compile(loss='mean_squared_error', optimizer=opt, metrics=['mae']) #plot_model(model, to_file='model_plot.png', show_shapes=True, show_layer_names=True) # Train model early_stop = EarlyStopping(monitor='val_loss', patience=20, verbose=1, mode='min', restore_best_weights=True) #reduce_lr = ReduceLROnPlateau(monitor='val_loss', factor=0.2, patience=9, verbose=1, mode='min', min_lr=1e-5) #history = model.fit(X_train, y_train, epochs=500, batch_size=128, validation_data=(X_test, y_test),callbacks=[early_stop]) #model.save("lstm_model_lorenz.h5") # 对测试集进行预测 train_pred = model.predict(X_input_train[:, :, :]) * x_train_max test_pred = model.predict(X_input_test[:, :, :]) * x_train_max train_true = X_output_train[:, :] * x_train_max test_true = X_output_test[:, :] * x_train_max # 计算预测指标 ith_timestep = 10 # Specify the number of recursive prediction steps # List to store the predicted steps pred_len =2 predicted_steps = [] for i in range(X_output_test.shape[0]-pred_len+1): YPred =[],temdata = X_input_test[i,:] for j in range(pred_len): Ypred.append (model.predict(temdata)) temdata = [X_input_test[i,j+1:-1],YPred] # Convert the predicted steps into numpy array predicted_steps = np.array(predicted_steps) # Plot the predicted steps #plt.plot(X_output_test[0:ith_timestep], label='True') plt.plot(predicted_steps, label='Predicted') plt.legend() plt.show()

这段代码看起来是一个用于时间序列预测的深度学习模型。该模型使用了序列到序列 LSTM (Seq2Seq LSTM) 模型进行预测，使用了 EarlyStopping 回调函数来避免过度拟合，并使用 Adam 优化器来进行模型优化。...

arima_model = ARIMA(train_ts, order=(1, 1, 1)) arima_result = arima_model.fit()pred_ts = [] for i in range(len(test_ts)): # 预测ARIMA模型的下一个值 arima_pred = arima_result.forecast()[0][0] # 使用GARCH模型计算方差 var = garch_result.forecast(horizon=1).variance.iloc[-1, 0] # 计算标准差 std = np.sqrt(var) # 计算置信区间 conf_int = (arima_pred - 1.96 * std, arima_pred + 1.96 * std) # 将预测结果添加到列表中 pred_ts.append(arima_pred) # 将预测结果添加到模型中 arima_result = arima_result.append(pd.Series([test_ts[i]], index=[test_ts.index[i]])) garch_result = garch_result.append(pd.Series([arima_result.resid[-1]], index=[test_ts.index[i]]))这段代码错误在哪怎么改正

garch_result = garch_model.fit(update_freq=5).forecast(horizon=len(test_ts), reindex=False) arima_model = ARIMA(train_ts, order=(1, 1, 1)) arima_result = arima_model.fit() pred_ts = [] for i in range...

相关推荐

C++11条件变量condition_variable详解与使用

二芳基三嗪类HIV-1逆转录酶抑制剂的分子对接与3D-QSAR分析

len1 = 0 len2 = 0 for i in range(len(X_test)): len20 = 0 len1 = len1+ len(X_test[i]) for j in range(len(X_test[i])): if (y_Pred[i-1][j-1]==y_test[i-1][j-1]): len20 = len20 + 1 len2 = len2 + len20为什么 if (y_Pred[i-1][j-1]==y_test[i-1][j-1]): IndexError: list index out of range

y_true = y_true.astype(np.int64) assert y_pred.size == y_true.size D = max(y_pred.max(), y_true.max()) + 1 w = np.zeros((D, D), dtype=np.int64) for i in range(y_pred.size): w[y_pred[i], y_true[i]] += 1 ind = linear_assignment(w.max() - w) return sum([w[i, j] for i, j in ind]) * 1.0 / y_pred.size

rf_pred = rf.predict(fuzzy_inputs) dnn_pred = dnn.predict(fuzzy_inputs) y_pred += (rf_pred + np.argmax(dnn_pred, axis=1)) / 2是什么意思

最新推荐

解决keras,val_categorical_accuracy:,0.0000e+00问题

解决Tensorflow2.0 tf.keras.Model.load_weights() 报错处理问题

华普微四通道数字隔离器

正整数数组验证库：确保值符合正整数规则

管理建模和仿真的文件

【损失函数与随机梯度下降】：探索学习率对损失函数的影响，实现高效模型训练

在ADS软件中，如何选择并优化低噪声放大器的直流工作点以实现最佳性能？

系统移植工具集：镜像、工具链及其他必备软件包

"互动学习：行动中的多样性与论文攻读经历"

【损失函数与批量梯度下降】：分析批量大小对损失函数影响，优化模型学习路径