优化下列代码 def rule_evaluation(self, x): rule_out = np.zeros((x.shape[0], self.n_mf ** self.n_input)) for i in range(x.shape[0]): rule = np.zeros((self.n_mf, self.n_input)) for j in range(self.n_input): rule[:, j] = self.membership_function(x[i, j], self.mf_params[j, :]) rule = np.meshgrid(*rule) rule = np.stack(rule, axis=-1) rule = rule.reshape((-1, self.n_input)) rule_out[i, :] = np.min(rule, axis=1) return rule_out

python中numpy.zeros(np.zeros)的使用方法

下面小编就为大家带来一篇python中numpy.zeros(np.zeros)的使用方法。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧

lpclpcc.rar_LPC_LPCC_LPC特征提取_提取lpc_语音特征提取

ldpc_distr.zip_LDPC码_density of zeros_ldpc ofdm_parity check cod

LDPC码是Low Density Parity-check Codes的缩写，一个长为N的LDPC码由它的校验矩阵H来定义，该矩阵的特点是其中的元素0特别多，1特别少——即所谓的“低密度”。一个参数为（N，i，j）的H表示该矩阵中每列有i个1，每...

修正下列代码def rule_evaluation(self, x): rule_out = np.zeros((x.shape[0], self.n_mf ** self.n_input)) for i in range(x.shape[0]): rule = np.zeros((self.n_mf, self.n_input)) for j in range(self.n_input): rule[:, j] = self.membership_function(x[i, j], self.mf_params[j, :]) rule = np.meshgrid(*rule) rule = np.stack(rule, axis=-1) rule = rule.reshape((-1, self.n_input)) rule_out[i, :] = np.min(rule, axis=1) return rule_out

rule_out = np.zeros((x.shape[0], n_mf ** n_input)) for i in nb.prange(x.shape[0]): rule = np.zeros((n_mf, n_input)) for j in range(n_input): rule[:, j] = membership_function(x[i, j], mf_params[j,...

class TimeWindowSequence(Sequence): def init(self, x, y, batch_size, window_size): self.x = x self.y = y self.batch_size = batch_size self.window_size = window_size self.window_count = int(np.ceil(x.shape[0] / window_size)) def len(self): return int(np.ceil(self.x.shape[0] / self.batch_size)) def getitem(self, idx): batch_x = np.zeros((self.batch_size, self.window_size, self.x.shape[1])) batch_y = np.zeros((self.batch_size, self.y.shape[1])) for i in range(self.batch_size): j = idx * self.batch_size + i if j >= self.window_count: break window_x = self.x[jself.window_size:(j+1)self.window_size, :] window_y = self.y[jself.window_size:(j+1)self.window_size, :] batch_x[i, :window_x.shape[0], :] = window_x batch_y[i, :] = window_y[-1, :] return batch_x, batch_y出现

batch_x = np.zeros((self.batch_size, self.window_size, self.x.shape[1])) batch_y = np.zeros((self.batch_size, self.y.shape[1])) for i in range(self.batch_size): j = idx * self.batch_size + i if j...

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

num_train = self.X_train.shape[0] # 训练数据集的大小 dists = np.zeros((num_test, num_train)) # 创建一个距离矩阵，大小为(num_test, num_train) # 计算测试数据集和训练数据集之间的距离 d1 = -2 * np....

class NeuralNetwork: def init(self, input_dim, hidden_dim, output_dim): self.input_dim = input_dim self.hidden_dim = hidden_dim self.output_dim = output_dim self.weights1 = np.random.randn(input_dim, hidden_dim) self.bias1 = np.zeros((1, hidden_dim)) self.weights2 = np.random.randn(hidden_dim, output_dim) self.bias2 = np.zeros((1, output_dim)) def relu(self, x): return np.maximum(0, x) def relu_derivative(self, x): return np.where(x >= 0, 1, 0) def forward(self, x): self.z1 = np.dot(x, self.weights1) + self.bias1 self.a1 = self.relu(self.z1) self.z2 = np.dot(self.a1, self.weights2) + self.bias2 self.y_hat = self.z2 return self.y_hat def backward(self, x, y, learning_rate): error = self.y_hat - y delta2 = error delta1 = np.dot(delta2, self.weights2.T) * self.relu_derivative(self.a1) grad_weights2 = np.dot(self.a1.T, delta2) grad_bias2 = np.sum(delta2, axis=0, keepdims=True) grad_weights1 = np.dot(x.T, delta1) grad_bias1 = np.sum(delta1, axis=0) self.weights2 -= learning_rate * grad_weights2 self.bias2 -= learning_rate * grad_bias2 self.weights1 -= learning_rate * grad_weights1 根据代码加上损失函数和优化

self.z1 = np.dot(x, self.weights1) + self.bias1 self.a1 = self.relu(self.z1) self.z2 = np.dot(self.a1, self.weights2) + self.bias2 self.y_hat = self.z2 return self.y_hat def backward(self, x, y...

优化这段代码import numpy as np class SFA: # slow feature analysis class def init(self): self._Z = [] self._B = [] self._eigenVector = [] def getB(self, data): self._B = np.matrix(data.T.dot(data)) / (data.shape[0] - 1) def getZ(self, data): derivativeData = self.makeDiff(data) self._Z = np.matrix(derivativeData.T.dot(derivativeData)) / (derivativeData.shape[0] - 1) def makeDiff(self, data): diffData = np.mat(np.zeros((data.shape[0], data.shape[1]))) for i in range(data.shape[1] - 1): diffData[:, i] = data[:, i] - data[:, i + 1] diffData[:, -1] = data[:, -1] - data[:, 0] return np.mat(diffData) def fit_transform(self, data, threshold=1e-7, conponents=-1): if conponents == -1: conponents = data.shape[0] self.getB(data) U, s, V = np.linalg.svd(self._B) count = len(s) for i in range(len(s)): if s[i] (0.5) < threshold: count = i break s = s[0:count] s = s 0.5 S = (np.mat(np.diag(s))).I U = U[:, 0:count] whiten = S * U.T Z = (whiten * data.T).T self.getZ(Z) PT, O, P = np.linalg.svd(self._Z) self._eigenVector = P * whiten self._eigenVector = self._eigenVector[-1 * conponents:, :] return data.dot(self._eigenVector.T) def transfer(self, data): return data.dot(self._eigenVector.T)

diffData = np.mat(np.zeros((data.shape[0], data.shape[1]))) diffData[:, :-1] = data[:, :-1] - data[:, 1:] diffData[:, -1] = data[:, -1] - data[:, 0] return np.mat(diffData) def fit_transform...

if self.running_mean is None: N, D = x.shape self.running_mean = np.zeros(D) self.running_var = np.zeros(D)

这段代码是在批量归一化层中进行初始化操作。如果 self.running_mean 为空，即第一次使用该层进行训练，它会首先计算输入张量 x 的形状（N,D），其中 N 表示 batch size，D 表示每个样本的特征数。然后，它将 self....

class SVDRecommender: def init(self, k=50, ncv=None, tol=0, which='LM', v0=None, maxiter=None, return_singular_vectors=True, solver='arpack'): self.k = k self.ncv = ncv self.tol = tol self.which = which self.v0 = v0 self.maxiter = maxiter self.return_singular_vectors = return_singular_vectors self.solver = solver def svds(self, A): if self.which == 'LM': largest = True elif self.which == 'SM': largest = False else: raise ValueError("which must be either 'LM' or 'SM'.") if not (isinstance(A, LinearOperator) or isspmatrix(A) or is_pydata_spmatrix(A)): A = np.asarray(A) n, m = A.shape if self.k <= 0 or self.k >= min(n, m): raise ValueError("k must be between 1 and min(A.shape), k=%d" % self.k) if isinstance(A, LinearOperator): if n > m: X_dot = A.matvec X_matmat = A.matmat XH_dot = A.rmatvec XH_mat = A.rmatmat else: X_dot = A.rmatvec X_matmat = A.rmatmat XH_dot = A.matvec XH_mat = A.matmat dtype = getattr(A, 'dtype', None) if dtype is None: dtype = A.dot(np.zeros([m, 1])).dtype else: if n > m: X_dot = X_matmat = A.dot XH_dot = XH_mat = _herm(A).dot else: XH_dot = XH_mat = A.dot X_dot = X_matmat = _herm(A).dot def matvec_XH_X(x): return XH_dot(X_dot(x)) def matmat_XH_X(x): return XH_mat(X_matmat(x)) XH_X = LinearOperator(matvec=matvec_XH_X, dtype=A.dtype, matmat=matmat_XH_X, shape=(min(A.shape), min(A.shape))) #获得隐式定义的格拉米矩阵的低秩近似。 eigvals, eigvec = eigsh(XH_X, k=self.k, tol=self.tol ** 2, maxiter=self.maxiter, ncv=self.ncv, which=self.which, v0=self.v0) #格拉米矩阵有实非负特征值。 eigvals = np.maximum(eigvals.real, 0) #使用来自pinvh的小特征值的复数检测。 t = eigvec.dtype.char.lower() factor = {'f': 1E3, 'd': 1E6} cond = factor[t] * np.finfo(t).eps cutoff = cond * np.max(eigvals) #获得一个指示哪些本征对不是简并微小的掩码， #并为阈值奇异值创建一个重新排序数组。 above_cutoff = (eigvals > cutoff) nlarge = above_cutoff.sum() nsmall = self.k - nlarge slarge = np.sqrt(eigvals[above_cutoff]) s = np.zeros_like(eigvals) s[:nlarge] = slarge if not self.return_singular_vectors: return np.sort(s) if n > m: vlarge = eigvec[:, above_cutoff] ularge = X_matmat(vlarge) / slarge if self.return_singular_vectors != 'vh' else None vhlarge = _herm(vlarge) else: ularge = eigvec[:, above_cutoff] vhlarge = _herm(X_matmat(ularge) / slarge) if self.return_singular_vectors != 'u' else None u = _augmented_orthonormal_cols(ularge, nsmall) if ularge is not None else None vh = _augmented_orthonormal_rows(vhlarge, nsmall) if vhlarge is not None else None indexes_sorted = np.argsort(s) s = s[indexes_sorted] if u is not None: u = u[:, indexes_sorted] if vh is not None: vh = vh[indexes_sorted] return u, s, vh def _augmented_orthonormal_cols(U, n): if U.shape[0] <= n: return U Q, R = np.linalg.qr(U) return Q[:, :n] def _augmented_orthonormal_rows(V, n): if V.shape[1] <= n: return V Q, R = np.linalg.qr(V.T) return Q[:, :n].T def _herm(x): return np.conjugate(x.T) 将上述代码修改为使用LM，迭代器使用arpack

eigvals, eigvec = eigsh(XH_X, k=self.k, tol=self.tol ** 2, maxiter=self.maxiter, ncv=self.ncv, which=self.which, v0=self.v0, mode=self.solver) # 格拉米矩阵有实非负特征值。 eigvals = np.maximum...

def __forward(self, x, train_flg): if self.running_mean is None: N, D = x.shape self.running_mean = np.zeros(D) self.running_var = np.zeros(D) if train_flg: mu = x.mean(axis=0) xc = x - mu var = np.mean(xc**2, axis=0) std = np.sqrt(var + 10e-7) xn = xc / std self.batch_size = x.shape[0] self.xc = xc self.xn = xn self.std = std self.running_mean = self.momentum * self.running_mean + (1-self.momentum) * mu self.running_var = self.momentum * self.running_var + (1-self.momentum) * var else: xc = x - self.running_mean xn = xc / ((np.sqrt(self.running_var + 10e-7))) out = self.gamma * xn + self.beta return out

这段代码是一个私有方法，用于实现批量归一化操作。输入参数 x 是一个张量，train_flg 是一个布尔类型的变量，表示当前是否处于训练模式。如果 self.running_mean 为空，那么它会被初始化为一个全零的数组，self....

逐句解释一下import numpy as npclass Perceptron: def init(self, num_classes, input_size, lr=0.1, epochs=1000): self.num_classes = num_classes self.input_size = input_size self.lr = lr self.epochs = epochs self.weights = np.zeros((num_classes, input_size)) self.biases = np.zeros(num_classes) def train(self, X, y): for epoch in range(self.epochs): for i in range(X.shape[0]): x = X[i] target = y[i] output = self.predict(x) if output != target: self.weights[target] += self.lr * x self.biases[target] += self.lr self.weights[output] -= self.lr * x self.biases[output] -= self.lr def predict(self, x): scores = np.dot(self.weights, x) + self.biases return np.argmax(scores)if name == 'main': X = np.array([[1, 1], [2, 1], [2, 3], [3, 2]]) y = np.array([0, 0, 1, 1]) num_classes = 2 input_size = 2 perceptron = Perceptron(num_classes, input_size) perceptron.train(X, y) print(perceptron.predict(np.array([1, 2])))

1. import numpy as np：导入NumPy库并将其命名为np，使得在代码中使用NumPy函数和数组时可以更方便地调用。 2. class Perceptron:：定义一个名为Perceptron的类。 3. def __init__(self, num_classes, ...

感知机学习算法定义实例方法score函数class Perception_model: def init(self,n): self.w=np.zeros(n,dtype=np.float32) self.b=0 self.l_rate=0.1 def sign(self,x): y=np.dot(x,self.w)+self.b return y def fit(self,X_train,y_train): is_wrong=True while is_wrong: is_wrong=False for i in range(len(X_train)): if y_train[i]self.sign(X_train[i])<=0: self.w=self.w+self.l_ratenp.dot(y_train[i],X_train[i]) self.b=self.b+self.l_rate*y_train[i] is_wrong=True def score(self,X_test,y_test):

if y_train[i]*self.sign(X_train[i])<=0: # 如果分类错误 self.w=self.w+self.l_rate*np.dot(y_train[i],X_train[i]) # 更新权重向量w self.b=self.b+self.l_rate*y_train[i] # 更新偏置b is_wrong=True def...

程序执行提示AttributeError: 'point_cloud_generator' object has no attribute 'widthself'，优化程序class point_cloud_generator(): def init(self, rgb_file, depth_file, save_ply, camera_intrinsics=[784.0, 779.0, 649.0, 405.0]): self.rgb_file = rgb_file self.depth_file = depth_file self.save_ply = save_ply self.rgb = cv2.imread(rgb_file) self.depth = cv2.imread(self.depth_file, -1) print("your depth image shape is:", self.depth.shape) self.width = self.rgb.shape[1] self.height = self.rgb.shape[0] self.camera_intrinsics = camera_intrinsics self.depth_scale = 1000 def compute(self): t1 = time.time() depth = np.asarray(self.depth, dtype=np.uint16).T # depth[depth==65535]=0 self.Z = depth / self.depth_scale fx, fy, cx, cy = self.camera_intrinsics X = np.zeros((self.width, self.height)) Y = np.zeros((self.width, self.height)) for i in range(self.width): X[i, :] = np.full(X.shape[1], i) self.X = ((X - cx / 2) * self.Z) / fx for i in range(self.height): Y[:, i] = np.full(Y.shape[0], i) self.Y = ((Y - cy / 2) * self.Z) / fy data_ply = np.zeros((6, self.width * self.height)) data_ply[0] = self.X.T.reshape(-1)[:self.widthself.height] data_ply[1] = -self.Y.T.reshape(-1)[:self.widthself.height] data_ply[2] = -self.Z.T.reshape(-1)[:self.widthself.height] img = np.array(self.rgb, dtype=np.uint8) data_ply[3] = img[:, :, 0:1].reshape(-1)[:self.widthself.height] data_ply[4] = img[:, :, 1:2].reshape(-1)[:self.widthself.height] data_ply[5] = img[:, :, 2:3].reshape(-1)[:self.widthself.height] self.data_ply = data_ply t2 = time.time() print('calcualte 3d point cloud Done.', t2 - t1)

在代码中有两处出现了 self.widthself.height，这应该是想要写成 self.width * self.height。你需要修改这两处，如下所示： data_ply[0] = self.X.T.reshape(-1)[:self.width * self.height] data_ply[1] =...

def init(self, n_inputs, n_rules, learning_rate=0.01): self.n = n_inputs self.m = n_rules self.lr = learning_rate # Initialize MF parameters using k-means clustering kmeans = KMeans(n_clusters=self.m) x0 = np.random.rand(100, self.n) # 用于聚类的样本点 kmeans.fit(x0) centroids = kmeans.cluster_centers_ # 获取聚类中心 sigmas = np.ones(self.m) * (kmeans.inertia_ / self.m) ** 0.5 # 计算标准差 self.params = { "mf_params": np.concatenate([centroids.flatten(), sigmas.flatten()]), "out_params": np.random.rand((self.n + 1) * self.m, ) } def gaussmf(self, x, c, sigma): return np.exp(-np.power(x - c, 2.) / (2 * np.power(sigma, 2.))) def predict(self, X): mf_out = np.zeros((len(X), self.n, self.m)) for i in range(self.n): mf_out[:, i, :] = self.gaussmf(X[:, i].reshape(-1, 1), self.params['mf_params'][:self.m], self.params['mf_params'][self.m:])出现 operands could not be broadcast together with shapes (32,3) (0,) 修改

根据你提供的代码，我发现在predict函数中，如果X的shape是(32, 3)，则会出现operands could not be broadcast together with shapes (32,3) (0,)的错误。这是因为在计算mf_out时，对于每个输入X[:, i].reshape(-1, ...

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))

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() ...

优化：import numpy as np import scipy.signal as signal import scipy.io.wavfile as wavfile import pywt import matplotlib.pyplot as plt def wiener_filter(x, fs, cutoff): # 维纳滤波函数 N = len(x) freqs, Pxx = signal.periodogram(x, fs=fs) H = np.zeros(N) H[freqs <= cutoff] = 1 Pxx_smooth = np.maximum(Pxx, np.max(Pxx) * 1e-6) H_smooth = np.maximum(H, np.max(H) * 1e-6) G = H_smooth / (H_smooth + 1 / Pxx_smooth) y = np.real(np.fft.ifft(np.fft.fft(x) * G)) return y def kalman_filter(x): # 卡尔曼滤波函数 Q = np.diag([0.01, 1]) R = np.diag([1, 0.1]) A = np.array([[1, 1], [0, 1]]) H = np.array([[1, 0], [0, 1]]) x_hat = np.zeros((2, len(x))) P = np.zeros((2, 2, len(x))) x_hat[:, 0] = np.array([x[0], 0]) P[:, :, 0] = np.eye(2) for k in range(1, len(x)): x_hat[:, k] = np.dot(A, x_hat[:, k-1]) P[:, :, k] = np.dot(np.dot(A, P[:, :, k-1]), A.T) + Q K = np.dot(np.dot(P[:, :, k], H.T), np.linalg.inv(np.dot(np.dot(H, P[:, :, k]), H.T) + R)) x_hat[:, k] += np.dot(K, x[k] - np.dot(H, x_hat[:, k])) P[:, :, k] = np.dot(np.eye(2) - np.dot(K, H), P[:, :, k]) y = x_hat[0, :] return y # 读取含有噪声的语音信号 rate, data = wavfile.read("shengyin.wav") data = data.astype(float) / 32767.0 # 维纳滤波 y_wiener = wiener_filter(data, fs=rate, cutoff=1000) # 卡尔曼滤波 y_kalman = kalman_filter(data) # 保存滤波后的信号到文件中 wavfile.write("wiener_filtered.wav", rate, np.int32(y_wiener * 32767.0)) wavfile.write("kalman_filtered.wav", rate, np.int32(y_kalman * 32767.0))

wavfile.write(out_file, rate, np.int32(y_filtered * 32767.0)) # 维纳滤波 filter_wav_file("shengyin.wav", "wiener_filtered.wav", lambda x: wiener_filter(x, fs=rate, cutoff=1000)) # 卡尔曼滤波 filter...

逐行解释代码： def forward_Boosting(self, x, weight_mat=None): out = self.gru_features(x) fea = out[0] if self.use_bottleneck: fea_bottleneck = self.bottleneck(fea[:, -1, :]) fc_out = self.fc(fea_bottleneck).squeeze() else: fc_out = self.fc_out(fea[:, -1, :]).squeeze() out_list_all = out[1] out_list_s, out_list_t = self.get_features(out_list_all) loss_transfer = torch.zeros((1,)).cuda() if weight_mat is None: weight = (1.0 / self.len_seq * torch.ones(self.num_layers, self.len_seq)).cuda() else: weight = weight_mat dist_mat = torch.zeros(self.num_layers, self.len_seq).cuda() for i in range(len(out_list_s)): criterion_transder = TransferLoss( loss_type=self.trans_loss, input_dim=out_list_s[i].shape[2]) for j in range(self.len_seq): loss_trans = criterion_transder.compute( out_list_s[i][:, j, :], out_list_t[i][:, j, :]) loss_transfer = loss_transfer + weight[i, j] * loss_trans dist_mat[i, j] = loss_trans return fc_out, loss_transfer, dist_mat, weight

1. def forward_Boosting(self, x, weight_mat=None):：这是一个方法定义，接受输入张量x和权重矩阵weight_mat（可选参数）作为输入。 2. out = self.gru_features(x)：将输入张量x传递给self.gru_...

def out_to_rgb(out,PALETTE,CLASSES): palette = np.array(PALETTE) assert palette.shape[0] == len(CLASSES) assert palette.shape[1] == 3 assert len(palette.shape) == 2 color_seg = np.zeros((out.shape[0], out.shape[1], 3), dtype=np.uint8) for label, color in enumerate(palette): color_seg[out == label, :] = color tran=transforms.ToTensor() color_seg=tran(color_seg) return color_seg def out_to_rgb_np(out,PALETTE,CLASSES): palette = np.array(PALETTE) assert palette.shape[0] == len(CLASSES) assert palette.shape[1] == 3 assert len(palette.shape) == 2 color_seg = np.zeros((out.shape[0], out.shape[1], 3), dtype=np.uint8) for label, color in enumerate(palette): color_seg[out == label, :] = color return color_seg逐句解释

- color_seg = np.zeros((out.shape[0], out.shape[1], 3), dtype=np.uint8)：创建一个 shape 为 (out.shape[0], out.shape[1], 3) 的全 0 numpy 数组，用于存储转换后的 RGB 彩色图像。 - for label, color in ...

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