def compute(init_mat,trans_mat,emit_mat): init_sum = sum(init_mat.values()) for key,value in init_mat.items(): init_mat[key] = round(value/init_sum,3) for key,value in trans_mat.items(): cur_sum = sum(value.values()) if(cur_sum==0): continue for i,j in value.items(): trans_mat[key][i] = round(j/cur_sum,3) emit_list = emit_mat.values.tolist() for i in range(len(emit_list)): cur_sum = sum(emit_list[i]) if (cur_sum == 0): continue for j in range(len(emit_list[i])): emit_mat.iloc[i,j] = round(emit_list[i][j]/cur_sum,3)

经典rsa.rar_RSA.c_compute_rsa_rsa

1. 　首先要把文件夹中的rsa.c文件拷贝到运行工具（如TURBOC2）下文件夹名为INCLUDE的文件夹中。　（在本机上已经做过，所以不需要做）　　2. 　RSA的加密对象为C盘下文件名为CODE.txt的前8位（如果没有一定要在...

test_results_a_b_i.rar_The Test_site:en.pudn.com_sum sum image

描述中提到的“IIsum compute the sum of untegral image”，看起来像是在解释一个叫做“IIsum”的过程或工具，它用于计算积分图像（integral image）的和。积分图像是一种在计算机视觉和图像处理中常用的技术，它...

def compute(init_mat,trans_mat,emit_mat):#初始概率矩阵、转移概率矩阵和发射概率矩阵 init_sum = sum(init_mat.values()) for key,value in init_mat.items(): init_mat[key] = round(value/init_sum,3) for key,value in trans_mat.items(): cur_sum = sum(value.values()) if(cur_sum==0): continue for i,j in value.items(): trans_mat[key][i] = round(j/cur_sum,3) emit_list = emit_mat.values.tolist() for i in range(len(emit_list)): cur_sum = sum(emit_list[i]) if (cur_sum == 0): continue for j in range(len(emit_list[i])): emit_mat.iloc[i,j] = round(emit_list[i][j]/cur_sum,3)解释上面代码

- 首先，对于初始概率矩阵，计算其值总和 init_sum，并将每个状态的初始概率值除以 init_sum 并四舍五入保留3位小数，更新到 init_mat 中。这样就可以保证初始概率矩阵中每个元素的值都在0到1之间，并且总和为1。 - ...

这段代码什么作用def get_tag(word): tag=[] if len(word)==1: tag = ['S'] elif len(word)==2: tag = ['B','E'] else: num = len(word)-2 tag.append('B') tag.extend(['M']*num) tag.append('E') return tag def compute(init_mat,trans_mat,emit_mat): init_sum = sum(init_mat.values()) for key,value in init_mat.items(): init_mat[key] = round(value/init_sum,3) for key,value in trans_mat.items(): cur_sum = sum(value.values()) if(cur_sum==0): continue for i,j in value.items(): trans_mat[key][i] = round(j/cur_sum,3) emit_list = emit_mat.values.tolist() for i in range(len(emit_list)): cur_sum = sum(emit_list[i]) if (cur_sum == 0): continue for j in range(len(emit_list[i])): emit_mat.iloc[i,j] = round(emit_list[i][j]/cur_sum,3) def markov(txt,init_mat,trans_mat,emit_mat):

这段代码定义了三个函数，分别是 get_tag(word)、compute(init_mat,trans_mat,emit_mat) 和 markov(txt,init_mat,trans_mat,emit_mat)。 get_tag(word) 函数的作用是根据输入的中文词汇 word 返回其对应...

markov(a,init_mat,trans_mat,emit_mat) init_mat_compute = copy.deepcopy(init_mat) trans_mat_compute = copy.deepcopy(trans_mat) emit_mat_compute = copy.deepcopy(emit_mat) print(init_mat) print(trans_mat) print(emit_mat) compute(init_mat_compute,trans_mat_compute,emit_mat_compute) print("当前初始状态向量", init_mat_compute) print("当前转移矩阵", trans_mat_compute) print("当前发射矩阵:",emit_mat_compute)

接下来，代码使用copy.deepcopy函数分别对init_mat、trans_mat和emit_mat进行深拷贝，得到三个新的字典变量init_mat_compute、trans_mat_compute和emit_mat_compute，这是因为markov函数内部会对这三个字典进行修改...

请帮我详细解释每一行代码的意思if name == "main": BMES = [] print("正在读取本地模型矩阵...") with open(r'mat_pickle/init_mat.pkl', "rb") as f0: init_mat = np.array(list(pickle.load(f0).values())) with open(r'mat_pickle/trans_mat.pkl', "rb") as f1: init_trans_mat = np.array(list(pickle.load(f1).values())) with open(r'mat_pickle/emit_mat.pkl', "rb") as f2: init_emit_mat = pickle.load(f2) catalog = list(init_emit_mat) trans_mat = [] emit_mat = [] hidden_state = ["B", "M", "E", "S"] for item in init_trans_mat: trans_mat.append(np.array(list(item.values()))) for i in hidden_state: emit_mat.append(np.array(list(init_emit_mat.loc[i]))) emit_mat = np.array(emit_mat).reshape(4,-1) print("读取模型矩阵成功！") print("目前模型的汉字库",catalog) while(1): new_sentence = input("请输入你要分词的句子（如：商品和货币）输入0结束分词功能:") if (new_sentence == '0'): print("输入结束！") break state_s = [0,1,2,3] original = [catalog.index(i) for i in new_sentence] result = compute(original, state_s, init_mat, trans_mat, emit_mat) answer = solve_tag(result,new_sentence) print("分词的结果为：") for item in answer: print(item,end='') print("\n")

result = compute(original, state_s, init_mat, trans_mat, emit_mat) answer = solve_tag(result,new_sentence) print("分词的结果为：") for item in answer: print(item,end='') print("\n") 这段代码...

请帮我详细解释每一行代码的含义def compute(init_mat,trans_mat,emit_mat): init_sum = sum(init_mat.values()) for key,value in init_mat.items():#和value，出现的次数key init_mat[key] = round(value/init_sum,3)#初始状态矩阵 for key,value in trans_mat.items():#转移概率矩阵 cur_sum = sum(value.values()) if(cur_sum==0): continue for i,j in value.items(): trans_mat[key][i] = round(j/cur_sum,3) emit_list = emit_mat.values.tolist()#数组转列表 for i in range(len(emit_list)):#观测概率矩阵 cur_sum = sum(emit_list[i]) if (cur_sum == 0): continue for j in range(len(emit_list[i])): emit_mat.iloc[i,j] = round(emit_list[i][j]/cur_sum,3)#iloc在数据表中提取出相应的数据 def markov(txt,init_mat,trans_mat,emit_mat):#用于实现 HMM 模型，对文本进行分词，然后标注出每个汉字的标签符号，最后将每个标记符号与其所对应的汉字加入到发射矩阵中，并且提取这个文本的初始状态矩阵、状态转移矩阵和发射矩阵。 list_all = txt.split(" ") print("词库", list_all) sentence = "".join(list_all) #处理发射矩阵 original = [i for i in sentence] list_column = [0, 0, 0, 0] df_column = [column for column in emit_mat]#遍历存储 for item in original: if item not in df_column: emit_mat[item] = list_column#构建一个新的字典emit_mat，其中包含了origina中所有不在df_column出现的元素 #处理BMSE single = [] for word in list_all: word_tag = get_tag(word) single.extend(word_tag)#将一个列表中的每个单词进行词性标注 BMES.append(single) print("BMES:", BMES) item = single.copy() first = item[0] init_mat[first] += 1 for i in range(len(item) - 1): i1 = item[i] i2 = item[i + 1] trans_mat[i1][i2] += 1 for i, j in zip(item, original): emit_mat.loc[i, j] += 1

def compute(init_mat,trans_mat,emit_mat): init_sum = sum(init_mat.values()) # 计算初始状态矩阵中出现的次数之和 for key,value in init_mat.items(): # 遍历初始状态矩阵 init_mat[key] = round(value/init...

if name == "main": init_mat = {'B': 0, 'M': 0, 'E': 0, 'S': 0} trans_mat = {'B': {'B': 0, 'M': 0, 'E': 0, 'S': 0}, 'M': {'B': 0, 'M': 0, 'E': 0, 'S': 0}, 'E': {'B': 0, 'M': 0, 'E': 0, 'S': 0}, 'S': {'B': 0, 'M': 0, 'E': 0, 'S': 0}} BMES = [] emit_mat = pd.DataFrame(index=['B', 'M', 'E', 'S'])#Dataframe有行和列的索引；它可以被看作是一个Series的字典 while (1): print("请在下面输入你要分词的句子（用空格将词分开，输入0结束输入），例如：项目的研究") a = input("情输入：") if a == '0': print("输入结束！正在存储模型矩阵...") with open('./01/init_mat.pkl',"wb") as f0: pickle.dump(init_mat,f0) with open('./01/trans_mat.pkl',"wb") as f1: pickle.dump(trans_mat,f1) with open('./01/emit_mat.pkl',"wb") as f2: pickle.dump(emit_mat,f2) print("存储模型成功！") break markov(a,init_mat,trans_mat,emit_mat) init_mat_compute = copy.deepcopy(init_mat) trans_mat_compute = copy.deepcopy(trans_mat) emit_mat_compute = copy.deepcopy(emit_mat) print(init_mat) print(trans_mat) print(emit_mat) compute(init_mat_compute,trans_mat_compute,emit_mat_compute) print("当前初始状态向量", init_mat_compute) print("当前转移矩阵", trans_mat_compute) print("当前发射矩阵:",emit_mat_compute)请给这段代码每行代码加上详细注释

compute(init_mat_compute, trans_mat_compute, emit_mat_compute) # 进行模型参数的计算 print(init_mat) # 打印初始状态向量 print(trans_mat) # 打印转移矩阵 print(emit_mat) # 打印发射矩阵 print("当前...

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

遍历每个时间步j时，使用TransferLoss计算out_list_s[i][:, j, :]和out_list_t[i][:, j, :]之间的损失值loss_trans。然后，根据权重值weight[i, j]将损失值加权累加到loss_transfer中，并将损失值存储...

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_...

result = compute(original, state_s, init_mat, trans_mat, emit_mat)

这行代码调用了名为 compute 的函数，并将 original、state_s、init_mat、trans_mat 和 emit_mat 作为参数传递给该函数。根据函数的定义，这些参数用于计算给定分词状态下的最优标记序列和相应的分值，...

Orbit_compute_state_vector.rar_compute orbit_orbit_orbit matlab_

"Orbit_compute_state_vector.rar"提供的代码是实现这一目标的关键工具，其中包含了名为"Orbit_compute_state_vector.m"的主函数。接下来，我们将详细解释相关知识点。一、二体问题二体问题是指两个质量点在...

import pandas as pd import numpy as np # 计算用户对歌曲的播放比例 triplet_dataset_sub_song_merged_sum_df = triplet_dataset_sub_song_mergedpd[['user', 'listen_count']].groupby('user').sum().reset_index() triplet_dataset_sub_song_merged_sum_df.rename(columns={'listen_count': 'total_listen_count'}, inplace=True) triplet_dataset_sub_song_merged = pd.merge(triplet_dataset_sub_song_mergedpd, triplet_dataset_sub_song_merged_sum_df) triplet_dataset_sub_song_mergedpd['fractional_play_count'] = triplet_dataset_sub_song_mergedpd['listen_count'] / triplet_dataset_sub_song_merged['total_listen_count'] # 将用户和歌曲编码为数字 small_set = triplet_dataset_sub_song_mergedpd user_codes = small_set.user.drop_duplicates().reset_index() song_codes = small_set.song.drop_duplicates().reset_index() user_codes.rename(columns={'index': 'user_index'}, inplace=True) song_codes.rename(columns={'index': 'song_index'}, inplace=True) song_codes['so_index_value'] = list(song_codes.index) user_codes['us_index_value'] = list(user_codes.index) small_set = pd.merge(small_set, song_codes, how='left') small_set = pd.merge(small_set, user_codes, how='left') # 将数据转换为稀疏矩阵形式 from scipy.sparse import coo_matrix mat_candidate = small_set[['us_index_value', 'so_index_value', 'fractional_play_count']] data_array = mat_candidate.fractional_play_count.values row_array = mat_candidate.us_index_value.values col_array = mat_candidate.so_index_value.values data_sparse = coo_matrix((data_array, (row_array, col_array)), dtype=float) # 使用SVD方法进行矩阵分解并进行推荐 from scipy.sparse import csc_matrix from scipy.sparse.linalg import svds import math as mt def compute_svd(urm, K): U, s, Vt = svds(urm, K) dim = (len(s), len(s)) S = np.zeros(dim, dtype=np.float32) for i in range(0, len(s)): S[i, i] = mt.sqrt(s[i]) U = csc_matrix(U, dtype=np.float32) S = csc_matrix(S, dtype=np.float32) Vt = csc_matrix(Vt, dtype=np.float32) return U, S, Vt def compute_estimated_matrix(urm, U, S, Vt, uTest, K, test): rightTerm = S * Vt max_recommendation = 250 estimatedRatings = np.zeros(shape=(MAX_UID, MAX_PID), dtype=np.float16) recomendRatings = np.zeros(shape=(MAX_UID, max_recommendation), dtype=np.float16) for userTest in uTest: prod = U[userTest, :] * rightTerm estimatedRatings[userTest, :] = prod.todense() recomendRatings[userTest, :] = (-estimatedRatings[userTest, :]).argsort()[:max_recommendation] return recomendRatings K = 50 urm = data_sparse MAX_PID = urm.shape[1] MAX_UID = urm.shape[0] U, S, Vt = compute_svd(urm, K) uTest = [4, 5, 6, 7, 8, 73, 23] # uTest=[1b5bb32767963cbc215d27a24fef1aa01e933025] uTest_recommended_items = compute_estimated_matrix(urm, U, S, Vt 继续将这段代码输出完整

def compute_estimated_matrix(urm, U, S, Vt, uTest, K, test): rightTerm = S * Vt max_recommendation = 250 estimatedRatings = np.zeros(shape=(MAX_UID, MAX_PID), dtype=np.float16) recomendRatings = ...

all_scores = []; n_samples = length(labels); n_class = length(unique(labels)); K = length(W); scores = cell(K,1); max_scores = zeros(K, n_samples); tmp_label = zeros(K, n_samples); for j=1:K projected_X = X * W{j}; scores{j} = projected_X * Y; [max_scores(j,:),tmp_label(j,:)] = max(scores{j}'); end [best_scores,best_idx] = max(max_scores,[],1); label_idx = sub2ind(size(tmp_label), best_idx, 1:n_samples); predict_label = tmp_label(label_idx); %compute the confusion matrix label_mat = sparse(labels,1:n_samples,1,n_class,n_samples); predict_mat = sparse(predict_label,1:n_samples,1,n_class, n_samples); conf_mat = label_mat * predict_mat'; conf_mat_diag = diag(conf_mat); n_per_class = sum(label_mat'); %mean class accuracy mean_class_accuracy = sum(conf_mat_diag ./ n_per_class') / n_class; %per sample accuracy mean_sample_accuracy = sum(conf_mat_diag) / n_samples;

接下来，根据真实标签和预测标签创建稀疏矩阵label_mat和predict_mat，并计算它们的乘积，得到混淆矩阵conf_mat。通过从混淆矩阵的对角线上获取元素，得到每个类别的正确预测数量conf_mat_diag。计算每个类别的...

将上述代码放入了Recommenders.py文件中，作为一个自定义工具包。将下列代码中调用scipy包中svd的部分。转为使用Recommenders.py工具包中封装的svd方法。给出修改后的完整代码。import pandas as pd import math as mt import numpy as np from sklearn.model_selection import train_test_split from Recommenders import * from scipy.sparse.linalg import svds from scipy.sparse import coo_matrix from scipy.sparse import csc_matrix # Load and preprocess data triplet_dataset_sub_song_merged = triplet_dataset_sub_song_mergedpd # load dataset triplet_dataset_sub_song_merged_sum_df = triplet_dataset_sub_song_merged[['user','listen_count']].groupby('user').sum().reset_index() triplet_dataset_sub_song_merged_sum_df.rename(columns={'listen_count':'total_listen_count'},inplace=True) triplet_dataset_sub_song_merged = pd.merge(triplet_dataset_sub_song_merged,triplet_dataset_sub_song_merged_sum_df) triplet_dataset_sub_song_merged['fractional_play_count'] = triplet_dataset_sub_song_merged['listen_count']/triplet_dataset_sub_song_merged['total_listen_count'] # Convert data to sparse matrix format small_set = triplet_dataset_sub_song_merged user_codes = small_set.user.drop_duplicates().reset_index() song_codes = small_set.song.drop_duplicates().reset_index() user_codes.rename(columns={'index':'user_index'}, inplace=True) song_codes.rename(columns={'index':'song_index'}, inplace=True) song_codes['so_index_value'] = list(song_codes.index) user_codes['us_index_value'] = list(user_codes.index) small_set = pd.merge(small_set,song_codes,how='left') small_set = pd.merge(small_set,user_codes,how='left') mat_candidate = small_set[['us_index_value','so_index_value','fractional_play_count']] data_array = mat_candidate.fractional_play_count.values row_array = mat_candidate.us_index_value.values col_array = mat_candidate.so_index_value.values data_sparse = coo_matrix((data_array, (row_array, col_array)),dtype=float) # Compute SVD def compute_svd(urm, K): U, s, Vt = svds(urm, K) dim = (len(s), len(s)) S = np.zeros(dim, dtype=np.float32) for i in range(0, len(s)): S[i,i] = mt.sqrt(s[i]) U = csc_matrix(U, dtype=np.float32) S = csc_matrix(S, dtype=np.float32) Vt = csc_matrix(Vt, dtype=np.float32) return U, S, Vt def compute_estimated_matrix(urm, U, S, Vt, uTest, K, test): rightTerm = SVt max_recommendation = 10 estimatedRatings = np.zeros(shape=(MAX_UID, MAX_PID), dtype=np.float16) recomendRatings = np.zeros(shape=(MAX_UID,max_recommendation ), dtype=np.float16) for userTest in uTest: prod = U[userTest, :]rightTerm estimatedRatings[userTest, :] = prod.todense() recomendRatings[userTest, :] = (-estimatedRatings[userTest, :]).argsort()[:max_recommendation] return recomendRatings K=50 # number of factors urm = data_sparse MAX_PID = urm.shape[1] MAX_UID = urm.shape[0] U, S, Vt = compute_svd(urm, K) # Compute recommendations for test users # Compute recommendations for test users uTest = [1,6,7,8,23] uTest_recommended_items = compute_estimated_matrix(urm, U, S, Vt, uTest, K, True) # Output recommended songs in a dataframe recommendations = pd.DataFrame(columns=['user','song', 'score','rank']) for user in uTest: rank = 1 for song_index in uTest_recommended_items[user, 0:10]: song = small_set.loc[small_set['so_index_value'] == song_index].iloc[0] # Get song details recommendations = recommendations.append({'user': user, 'song': song['title'], 'score': song['fractional_play_count'], 'rank': rank}, ignore_index=True) rank += 1 display(recommendations)

data_array = mat_candidate.fractional_play_count.values row_array = mat_candidate.us_index_value.values col_array = mat_candidate.so_index_value.values data_sparse = coo_matrix((data_array, (row_...

while(1): new_sentence = input("请输入你要分词的句子（如：商品和货币）输入0结束分词功能:") if (new_sentence == '0'): print("输入结束！") break state_s = [0,1,2,3] original = [catalog.index(i) for i in new_sentence] result = compute(original, state_s, init_mat, trans_mat, emit_mat) answer = solve_tag(result,new_sentence) print("分词的结果为：") for item in answer: print(item,end='') print("\n")请给这段代码的每行代码加上详细注释

result = compute(original, state_s, init_mat, trans_mat, emit_mat) # 解析隐状态序列，得到分词结果 answer = solve_tag(result,new_sentence) # 输出分词结果 print("分词的结果为：") for item in ...

multifractal-compute.rar_matlab compute_power line _分形谱_多重分形 mat

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svd.cpp.zip_SVD_compute s_decomposition_svd.cpp

《C语言实现矩阵奇异值分解（SVD）详解》在数学和计算机科学领域，奇异值分解（Singular Value Decomposition，简称SVD）是一种重要的矩阵分解方法，它在信号处理、图像分析、机器学习等诸多领域都有广泛的应用。...

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