allangleType = _np.zeros([len(TotAngles[mol]), 2], dtype=int) for i in range(len(TotAngles[mol])): angId_1 = TotAngles[mol][i, 0] angId_2 = TotAngles[mol][i, 1] angId_3 = TotAngles[mol][i, 2] for bdT in range(len(self.BONDtypeIdx[mol])): comp1 = [angId_1, angId_2] == self.BONDtypeIdx[mol][bdT] comp2 = [angId_2, angId_1] == self.BONDtypeIdx[mol][bdT] cmp1 = _np.any(_np.all(comp1, axis=1)) cmp2 = _np.any(_np.all(comp2, axis=1)) if cmp1 or cmp2: allangleType[i, 0] = self.BONDtype[mol][bdT] comp1 = [angId_2, angId_3] == self.BONDtypeIdx[mol][bdT] comp2 = [angId_3, angId_2] == self.BONDtypeIdx[mol][bdT] cmp1 = _np.any(_np.all(comp1, axis=1)) cmp2 = _np.any(_np.all(comp2, axis=1)) if cmp1 or cmp2: allangleType[i, 1] = self.BONDtype[mol][bdT] TotAnglesType[mol] = allangleType

dwxh,dwhh,dwhy = np.zeros_like(wxh), np.zeros_like(Whh),np.zeros_like(Why) dbh, dby = np.zeros_like(bh),np.zeros_like(by) dhnext = np.zeros_like(hs[0]) for t in reversed(range(len(inputs))) : dy = np.copy(ps[t]) for b in range(0,B): dy[targets[t][b],b] -= 1 dwhy += np.dot(dy, hs[t].T) dby += np.expand_dims(np.sum(dy,axis=1),axis=1) dh = np.dot(Why.T, dy）+ dhnext dh = dh * (1-hs[t]*hs[t] ) dbh += np.expand_dims(np.sum(dh,axis=1),axis=1) dWxh += np.dot(dh,xs[t].T) dWhh += np.dot(dh,hs[t - 1].T) dhnext = np.dot(Whh.T,dh) return loss,dWxh,dWhh,dwhy,dbh,dby, hs[len(inputs) - 1] 给这段代码加上注释

for t in reversed(range(len(inputs))): # 计算当前时刻的输出值 dy = np.copy(ps[t]) for b in range(0,B): dy[targets[t][b], b] -= 1 # 计算各个参数的梯度 dwhy += np.dot(dy, hs[t].T) dby += np....

def data_generator(): i = 0 while 1: x = files_content[i: i + max_len] y = files_content[i + max_len] y_vec = np.zeros(shape=(1,len(words)),dtype=np.bool) y_vec[0,word2numF(y)] = 1.0 x_vec = np.zeros(shape=(1,max_len,len(words)),dtype=np.bool) for t, char in enumerate(x): x_vec[0,t,word2numF(char)] = 1.0 yield x_vec,y_vec i += 1怎么把检测第一个数改为第四个

y_vec = np.zeros(shape=(1,len(words)),dtype=np.bool) y_vec[0,word2numF(y)] = 1.0 x_vec = np.zeros(shape=(1,max_len,len(words)),dtype=np.bool) for t, char in enumerate(x): x_vec[0,t,word2numF...

acc = np.zeros((len(radius_range), 7))什么意思

这行代码使用NumPy库创建了一个2D数组acc，其形状为(len(radius_range), 7)，即行数为len(radius_range)，列数为7。数组中的所有元素都被初始化为0。len(radius_range)是radius_range列表的长度，这里应该...

解释np.zeros((num_objs), dtype=np.int32)

- dtype=np.int32 是一个参数，用于指定数组的数据类型为 np.int32，即32位整数。因此，这段代码的作用是创建一个长度为 num_objs 的一维数组，其中所有元素都被设置为零，并且数组的数据类型为 32 位整数。...

x_note = [] x_offset = [] for press_time_dict in midi_list: last_offset = Fraction(0, 1) sorted_keys = sorted(press_time_dict.keys(), key=lambda t: float(Fraction(t))) for i, key in enumerate(sorted_keys): note_arr = np.zeros(shape=(len(total_keys), len(duration_keys)), dtype=np.float32) for note, duration in press_time_dict[key]: note_arr[total_keys.index(note), duration_keys.index(duration)] = 1. note_arr[np.max(note_arr, axis=-1) == 0., duration_keys.index('0')] = 1. cur_offset = Fraction(key) x_offset.append(str(cur_offset - last_offset)) last_offset = cur_offset x_note.append(note_arr) x_note = np.stack(x_note, axis=0) offset_keys = list(set(x_offset)) x_offset_idx = np.array([offset_keys.index(offset_type) for offset_type in x_offset]) x_offset = np.eye(len(offset_keys), dtype=np.int32)[x_offset_idx] x_offset = np.array(x_offset, dtype=np.float32) np.save("notes_array.npy", x_note) np.save("offsets_array.npy", x_offset) np.save("note_keys_dict.npy", total_keys) np.save("note_offsets_dict.npy", offset_keys) np.save("note_durations_dict.npy", duration_keys)

这段代码的作用是将midi_list列表中的所有键值对转换为神经网络的输入格式。具体来说，它将每个键值对转换为一个二维数组，其中每行表示一个音符，每列表示一个持续时间。对于每个键值对，它还将其对应的偏移量...

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...

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

for i in range(self.batch_size): j = idx * self.batch_size + i if j >= self.window_count: break window_x = self.x[j*self.window_size:(j+1)*self.window_size, :] window_y = self.y[j*self.window_...

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) fuzzy_pred = np.argmax(fuzzy_pred, axis=1) report = classification_report(y_test, fuzzy_pred) print(report)该成四分类

for i in range(len(y_pred)): fuzzy_class = np.zeros((4,)) fuzzy_class[y_pred[i]] = 0.7 fuzzy_class[(y_pred[i]+1)%4] = 0.2 fuzzy_class[(y_pred[i]+2)%4] = 0.1 fuzzy_class[(y_pred[i]+3)%4] = 0.0 ...

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

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_...

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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

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) fuzzy_pred = np.argmax(fuzzy_pred, axis=1) report = classification_report(y_test, fuzzy_pred) print(report)该成四分类

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