train_features[i][j] = np.mean(model[tokenizer.index_word[word_index]])这段代码会报以下错误： train_features[i][j] = np.mean(model[tokenizer.index_word[word_index]]) File "/Users/siesta/Pycharm/TextClassifier/lib/python3.9/site-packages/gensim/models/keyedvectors.py", line 403, in __getitem__ return self.get_vector(key_or_keys) File "/Users/siesta/Pycharm/TextClassifier/lib/python3.9/site-packages/gensim/models/keyedvectors.py", line 446, in get_vector index = self.get_index(key) File "/Users/siesta/Pycharm/TextClassifier/lib/python3.9/site-packages/gensim/models/keyedvectors.py", line 420, in get_index raise KeyError(f"Key '{key}' not present") KeyError: "Key 'of' not present"如何解决

import tensorflow as tf import tensorflow_hub as hub from tensorflow.keras import layers import bert import numpy as np from transformers import BertTokenizer, BertModel # 设置BERT模型的路径和参数 bert_path = "E:\\AAA\\523\\BERT-pytorch-master\\bert1.ckpt" max_seq_length = 128 train_batch_size = 32 learning_rate = 2e-5 num_train_epochs = 3 # 加载BERT模型 def create_model(): input_word_ids = tf.keras.layers.Input(shape=(max_seq_length,), dtype=tf.int32, name="input_word_ids") input_mask = tf.keras.layers.Input(shape=(max_seq_length,), dtype=tf.int32, name="input_mask") segment_ids = tf.keras.layers.Input(shape=(max_seq_length,), dtype=tf.int32, name="segment_ids") bert_layer = hub.KerasLayer(bert_path, trainable=True) pooled_output, sequence_output = bert_layer([input_word_ids, input_mask, segment_ids]) output = layers.Dense(1, activation='sigmoid')(pooled_output) model = tf.keras.models.Model(inputs=[input_word_ids, input_mask, segment_ids], outputs=output) return model # 准备数据 def create_input_data(sentences, labels): tokenizer = bert.tokenization.FullTokenizer(vocab_file=bert_path + "trainer/vocab.small", do_lower_case=True) # tokenizer = BertTokenizer.from_pretrained('bert-base-uncased') input_ids = [] input_masks = [] segment_ids = [] for sentence in sentences: tokens = tokenizer.tokenize(sentence) tokens = ["[CLS]"] + tokens + ["[SEP]"] input_id = tokenizer.convert_tokens_to_ids(tokens) input_mask = [1] * len(input_id) segment_id = [0] * len(input_id) padding_length = max_seq_length - len(input_id) input_id += [0] * padding_length input_mask += [0] * padding_length segment_id += [0] * padding_length input_ids.append(input_id) input_masks.append(input_mask) segment_ids.append(segment_id) return np.array(input_ids), np.array(input_masks), np.array(segment_ids), np.array(labels) # 加载训练数据 train_sentences = ["Example sentence 1", "Example sentence 2", ...] train_labels = [0, 1, ...] train_input_ids, train_input_masks, train_segment_ids, train_labels = create_input_data(train_sentences, train_labels) # 构建模型 model = create_model() model.compile(optimizer=tf.keras.optimizers.Adam(lr=learning_rate), loss='binary_crossentropy', metrics=['accuracy']) # 开始微调 model.fit([train_input_ids, train_input_masks, train_segment_ids], train_labels, batch_size=train_batch_size, epochs=num_train_epochs)这段代码有什么问题吗？

这段代码存在一些问题： 1. bert_path 的值不应该是 ".ckpt" 结尾的文件路径，而是BERT模型的目录路径，例如：bert_path = "E:\\AAA\\523\\BERT-pytorch-master\\"。 2. vocab_file 参数应该是BERT模型目录...

tokenizer = Tokenizer(num_words=max_words) tokenizer.fit_on_texts(data['text']) sequences = tokenizer.texts_to_sequences(data['text']) word_index = tokenizer.word_index print('Found %s unique tokens.' % len(word_index)) data = pad_sequences(sequences,maxlen=maxlen) labels = np.array(data[:,:1]) print('Shape of data tensor:',data.shape) print('Shape of label tensor',labels.shape) indices = np.arange(data.shape[0]) np.random.shuffle(indices) data = data[indices] labels = labels[indices] x_train = data[:traing_samples] y_train = data[:traing_samples] x_val = data[traing_samples:traing_samples+validation_samples] y_val = data[traing_samples:traing_samples+validation_samples] model = Sequential() model.add(Embedding(max_words,100,input_length=maxlen)) model.add(Flatten()) model.add(Dense(32,activation='relu')) model.add(Dense(10000,activation='sigmoid')) model.summary() model.compile(optimizer='rmsprop', loss='binary_crossentropy', metrics=['acc']) history = model.fit(x_train,y_train, epochs=1, batch_size=128, validation_data=[x_val,y_val]) import matplotlib.pyplot as plt acc = history.history['acc'] val_acc = history.history['val_acc'] loss = history.history['loss'] val_loss = history.history['val_loss'] epoachs = range(1,len(acc) + 1) plt.plot(epoachs,acc,'bo',label='Training acc') plt.plot(epoachs,val_acc,'b',label = 'Validation acc') plt.title('Training and validation accuracy') plt.legend() plt.figure() plt.plot(epoachs,loss,'bo',label='Training loss') plt.plot(epoachs,val_loss,'b',label = 'Validation loss') plt.title('Training and validation loss') plt.legend() plt.show() max_len = 10000 x_train = keras.preprocessing.sequence.pad_sequences(x_train, maxlen=max_len) x_test = data[10000:,0:] x_test = keras.preprocessing.sequence.pad_sequences(x_test, maxlen=max_len) # 将标签转换为独热编码 y_train = np.eye(2)[y_train] y_test = data[10000:,:1] y_test = np.eye(2)[y_test]

word_index = tokenizer.word_index print('Found %s unique tokens.' % len(word_index)) data = pad_sequences(sequences, maxlen=maxlen) labels = np.array(data[:, 1:]) print('Shape of data tensor:', data....

import torch import torch.nn as nn from torchtext.datasets import AG_NEWS from torchtext.data.utils import get_tokenizer from torchtext.vocab import build_vocab_from_iterator # 数据预处理 tokenizer = get_tokenizer('basic_english') train_iter = AG_NEWS(split='train') counter = Counter() for (label, line) in train_iter: counter.update(tokenizer(line)) vocab = build_vocab_from_iterator([counter], specials=["<unk>"]) word2idx = dict(vocab.stoi) # 设定超参数 embedding_dim = 64 hidden_dim = 128 num_epochs = 10 batch_size = 64 # 定义模型 class RNN(nn.Module): def init(self, vocab_size, embedding_dim, hidden_dim): super(RNN, self).init() self.embedding = nn.Embedding(vocab_size, embedding_dim) self.rnn = nn.RNN(embedding_dim, hidden_dim, batch_first=True) self.fc = nn.Linear(hidden_dim, 4) def forward(self, x): x = self.embedding(x) out, _ = self.rnn(x) out = self.fc(out[:, -1, :]) return out # 初始化模型、优化器和损失函数 model = RNN(len(vocab), embedding_dim, hidden_dim) optimizer = torch.optim.Adam(model.parameters()) criterion = nn.CrossEntropyLoss() # 定义数据加载器 train_iter = AG_NEWS(split='train') train_data = [] for (label, line) in train_iter: label = torch.tensor([int(label)-1]) line = torch.tensor([word2idx[word] for word in tokenizer(line)]) train_data.append((line, label)) train_loader = torch.utils.data.DataLoader(train_data, batch_size=batch_size, shuffle=True) # 开始训练 for epoch in range(num_epochs): total_loss = 0.0 for input, target in train_loader: model.zero_grad() output = model(input) loss = criterion(output, target.squeeze()) loss.backward() optimizer.step() total_loss += loss.item() * input.size(0) print("Epoch: {}, Loss: {:.4f}".format(epoch+1, total_loss/len(train_data)))改错

line = torch.tensor([word2idx[word] for word in tokenizer(line)]).to(device) train_data.append((line, label)) train_loader = torch.utils.data.DataLoader(train_data, batch_size=batch_size, shuffle=...

import tensorflow as tf import tensorflow_hub as hub from tensorflow.keras import layers import bert import numpy as np from transformers import BertTokenizer, BertModel # 设置BERT模型的路径和参数 bert_path = "E:\\AAA\\523\\BERT-pytorch-master\\bert1.ckpt" max_seq_length = 128 train_batch_size = 32 learning_rate = 2e-5 num_train_epochs = 3 # 加载BERT模型 def create_model(): input_word_ids = tf.keras.layers.Input(shape=(max_seq_length,), dtype=tf.int32, name="input_word_ids") input_mask = tf.keras.layers.Input(shape=(max_seq_length,), dtype=tf.int32, name="input_mask") segment_ids = tf.keras.layers.Input(shape=(max_seq_length,), dtype=tf.int32, name="segment_ids") bert_layer = hub.KerasLayer(bert_path, trainable=True) pooled_output, sequence_output = bert_layer([input_word_ids, input_mask, segment_ids]) output = layers.Dense(1, activation='sigmoid')(pooled_output) model = tf.keras.models.Model(inputs=[input_word_ids, input_mask, segment_ids], outputs=output) return model # 准备数据 def create_input_data(sentences, labels): tokenizer = bert.tokenization.FullTokenizer(vocab_file=bert_path + "trainer/vocab.small", do_lower_case=True) # tokenizer = BertTokenizer.from_pretrained('bert-base-uncased') input_ids = [] input_masks = [] segment_ids = [] for sentence in sentences: tokens = tokenizer.tokenize(sentence) tokens = ["[CLS]"] + tokens + ["[SEP]"] input_id = tokenizer.convert_tokens_to_ids(tokens) input_mask = [1] * len(input_id) segment_id = [0] * len(input_id) padding_length = max_seq_length - len(input_id) input_id += [0] * padding_length input_mask += [0] * padding_length segment_id += [0] * padding_length input_ids.append(input_id) input_masks.append(input_mask) segment_ids.append(segment_id) return np.array(input_ids), np.array(input_masks), np.array(segment_ids), np.array(labels) # 加载训练数据 train_sentences = ["Example sentence 1", "Example sentence 2", ...] train_labels = [0, 1, ...] train_input_ids, train_input_masks, train_segment_ids, train_labels = create_input_data(train_sentences, train_labels) # 构建模型 model = create_model() model.compile(optimizer=tf.keras.optimizers.Adam(lr=learning_rate), loss='binary_crossentropy', metrics=['accuracy']) # 开始微调 model.fit([train_input_ids, train_input_masks, train_segment_ids], train_labels, batch_size=train_batch_size, epochs=num_train_epochs)

这段代码是用 TensorFlow 和 BERT 模型进行文本分类的示例。首先定义了模型路径和参数，然后使用 hub.KerasLayer 加载 BERT 模型，对输入进行编码后，添加一个全连接层并进行二分类，构建一个分类模型。接着使用 ...

这段代码什么意思 embedding_dim = 300 vocab_size = len(tokenizer.word_index) + 1 embedding_matrix = np.zeros((vocab_size, embedding_dim)) for word, i in tokenizer.word_index.items(): if word in model: embedding_matrix[i] = model[word]

这段代码是用于将预训练的GloVe词向量加载到嵌入矩阵（embedding matrix）中，以便在神经网络中使用。其中： - embedding_dim是嵌入矩阵的维度，也就是词向量的维度。这个值应该与预训练的词向量的维度保持一致。...

from transformers import BertTokenizer, BertModel import torch from sklearn.metrics.pairwise import cosine_similarity # 加载BERT模型和分词器 tokenizer = BertTokenizer.from_pretrained('bert-base-chinese') model = BertModel.from_pretrained('bert-base-chinese') # 种子词列表 seed_words = ['个人信息', '隐私', '泄露', '安全'] # 加载微博用户文本语料（假设存储在weibo1.txt文件中） with open('output/weibo1.txt', 'r', encoding='utf-8') as f: corpus = f.readlines() # 预处理文本语料，获取每个中文词汇的词向量 corpus_vectors = [] for text in corpus: # 使用BERT分词器将文本分成词汇 tokens = tokenizer.tokenize(text) # 将词汇转换为对应的id input_ids = tokenizer.convert_tokens_to_ids(tokens) # 将id序列转换为PyTorch张量 input_ids = torch.tensor(input_ids).unsqueeze(0) # 使用BERT模型计算词向量 with torch.no_grad(): outputs = model(input_ids) last_hidden_state = outputs[0][:, 1:-1, :] avg_pooling = torch.mean(last_hidden_state, dim=1) corpus_vectors.append(avg_pooling.numpy()) # 计算每个中文词汇与种子词的余弦相似度 similarity_threshold = 0.8 privacy_words = set() for seed_word in seed_words: # 将种子词转换为对应的id seed_word_ids = tokenizer.convert_tokens_to_ids(tokenizer.tokenize(seed_word)) # 将id序列转换为PyTorch张量，并增加batch size维度 seed_word_ids = torch.tensor(seed_word_ids).unsqueeze(0) # 使用BERT模型计算种子词的词向量 with torch.no_grad(): outputs = model(seed_word_ids) last_hidden_state = outputs[0][:, 1:-1, :] avg_pooling = torch.mean(last_hidden_state, dim=1) seed_word_vector = avg_pooling.numpy() # 计算每个中文词汇与种子词的余弦相似度 for i, vector in enumerate(corpus_vectors): sim = cosine_similarity([seed_word_vector], [vector])[0][0] if sim >= similarity_threshold: privacy_words.add(corpus[i]) print(privacy_words) 上述代码运行后报错了，报错信息：ValueError: Found array with dim 3. check_pairwise_arrays expected <= 2. 怎么修改？

seed_word_ids = tokenizer.convert_tokens_to_ids(tokenizer.tokenize(seed_word)) # 将id序列转换为PyTorch张量，并增加batch size维度 seed_word_ids = torch.tensor(seed_word_ids).unsqueeze(0) # 使用...

class TextMatchDataset(dataset.Dataset): def init(self, args, tokenizer, file_path): self.config = args self.tokenizer = tokenizer self.path = file_path self.inference = False self.max_seq_len = self.config.max_seq_len self.labels2id = args.labels2id_list[0] self.contents = self.load_dataset_match(self.config)

这段代码是一个自定义的 PyTorch Dataset 类，用于加载文本匹配任务的数据集。其中包含了如下的属性和方法： - __init__(self, args, tokenizer, file_path)：初始化函数，参数包括训练参数 args、分词器 ...

帮我翻译以下方法 def call(self, features, return_tensors=None): import numpy as np if return_tensors is None: return_tensors = self.return_tensors labels = [feature["labels"] for feature in features] if "labels" in features[0].keys() else None # We have to pad the labels before calling tokenizer.pad as this method won't pad them and needs them of the # same length to return tensors. if labels is not None: max_label_length = max(len(l) for l in labels) padding_side = self.tokenizer.padding_side for feature in features: remainder = [self.label_pad_token_id] * (max_label_length - len(feature["labels"])) if isinstance(feature["labels"], list): feature["labels"] = ( feature["labels"] + remainder if padding_side == "right" else remainder + feature["labels"] ) elif padding_side == "right": feature["labels"] = np.concatenate([feature["labels"], remainder]).astype(np.int64) else: feature["labels"] = np.concatenate([remainder, feature["labels"]]).astype(np.int64) features = self.tokenizer.pad( features, padding=self.padding, max_length=self.max_length, pad_to_multiple_of=self.pad_to_multiple_of, return_tensors=return_tensors, ) # prepare decoder_input_ids if self.model is not None and hasattr(self.model, "prepare_decoder_input_ids_from_labels"): decoder_input_ids = self.model.prepare_decoder_input_ids_from_labels(labels=features["labels"]) features["decoder_input_ids"] = decoder_input_ids return features

这个方法的作用是将输入的features进行处理，并返回处理后的结果。其中，features是一个字典列表，每个字典表示一个样本的特征。return_tensors是一个可选参数，表示返回的结果是否转换成张量。该方法首先从features...

input_ids = inputs.input_ids.to(model.device) attention_mask = inputs.attention_mask.to(model.device) # 生成 outputs = model.generate(input_ids, attention_mask=attention_mask, max_length=128) # 将token转换为文字 output_str = tokenizer.batch_decode(outputs, skip_special_tokens=True) output_str = [s.replace(" ","") for s in output_str] print(output_str)这是什么意思

"tokenizer.batch_decode(outputs, skip_special_tokens=True)" 将模型的输出转换为文字格式，同时去除掉一些特殊的标记；"[s.replace(" ","") for s in output_str]" 是将输出中的空格去掉，最终输出生成的文字结果...

class RNN: def init(self, input_size, hidden_size, output_size): self.input_size = input_size self.hidden_size = hidden_size self.output_size = output_size # 初始化参数 self.Wxh = np.random.randn(hidden_size, input_size) * 0.01 # 输入层到隐藏层的权重矩阵 self.Whh = np.random.randn(hidden_size, hidden_size) * 0.01 # 隐藏层到隐藏层的权重矩阵 self.Why = np.random.randn(output_size, hidden_size) * 0.01 # 隐藏层到输出层的权重矩阵 self.bh = np.zeros((hidden_size, 1)) # 隐藏层偏置 self.by = np.zeros((output_size, 1)) # 输出层偏置 # 初始化隐藏状态 self.h = np.zeros((hidden_size, 1)) def forward(self, x): # 更新隐藏状态 self.h = np.tanh(np.dot(self.Wxh, x) + np.dot(self.Whh, self.h) + self.bh) # 计算输出 y = np.dot(self.Why, self.h) + self.by # 返回输出和隐藏状态 return y, self.h def backward(self, x, y, target, learning_rate): # 计算输出误差 dy = y - target # 计算隐藏状态误差 dh = np.dot(self.Why.T, dy) * (1 - self.h ** 2) # 计算权重和偏置的梯度 dWhy = np.dot(dy, self.h.T) dby = np.sum(dy, axis=1, keepdims=True) dWxh = np.dot(dh, x.T) dWhh = np.dot(dh, self.h.T) dbh = np.sum(dh, axis=1, keepdims=True) # 更新权重和偏置 self.Why -= learning_rate * dWhy self.by -= learning_rate * dby self.Wxh -= learning_rate * dWxh self.Whh -= learning_rate * dWhh self.bh -= learning_rate * dbh 帮写一下用online_shopping_10_cats数据集训练以上模型的代码和步骤

input_size = len(tokenizer.word_index) + 1 hidden_size = 100 output_size = 10 learning_rate = 0.01 epochs = 10 batch_size = 128 # 初始化模型 model = RNN(input_size, hidden_size, output_size) # 训练...

from transformers import pipeline, BertTokenizer, BertModel import numpy as np import torch import jieba tokenizer = BertTokenizer.from_pretrained('bert-base-chinese') model = BertModel.from_pretrained('bert-base-chinese') ner_pipeline = pipeline('ner', model='bert-base-chinese') with open('output/weibo1.txt', 'r', encoding='utf-8') as f: data = f.readlines() def cosine_similarity(v1, v2): return np.dot(v1, v2) / (np.linalg.norm(v1) * np.linalg.norm(v2)) def get_word_embedding(word): input_ids = tokenizer.encode(word, add_special_tokens=True) inputs = torch.tensor([input_ids]) outputs = model(inputs)[0][0][1:-1] word_embedding = np.mean(outputs.detach().numpy(), axis=0) return word_embedding def get_privacy_word(seed_word, data): privacy_word_list = [] seed_words = jieba.lcut(seed_word) jieba.load_userdict('data/userdict.txt') for line in data: words = jieba.lcut(line.strip()) ner_results = ner_pipeline(''.join(words)) for seed_word in seed_words: seed_word_embedding = get_word_embedding(seed_word) for ner_result in ner_results: if ner_result['word'] == seed_word and ner_result['entity'] == 'O': continue if ner_result['entity'] != seed_word: continue word = ner_result['word'] if len(word) < 3: continue word_embedding = get_word_embedding(word) similarity = cosine_similarity(seed_word_embedding, word_embedding) print(similarity, word) if similarity >= 0.6: privacy_word_list.append(word) privacy_word_set = set(privacy_word_list) return privacy_word_set 上述代码运行之后，结果为空集合，哪里出问题了，帮我修改一下

input_ids = tokenizer.encode(word, add_special_tokens=True) inputs = torch.tensor([input_ids]) outputs = model(inputs)[0][0][1:-1] word_embedding = np.mean(outputs.detach().numpy(), axis=0) ...

翻译代码class SentimentAnalyzer(object): def init(self, model_path, userdict_path, stopword_path): self.clf = None self.vectorizer = None self.tfidftransformer = None self.model_path = model_path self.stopword_path = stopword_path self.userdict_path = userdict_path self.stop_words = [] self.tokenizer = jieba.Tokenizer() self.initialize()

这是一个名为 SentimentAnalyzer 的类，它包含了三个参数：model_path、userdict_path 和 stopword_path，用于初始化对象。在初始化过程中，会将 self.clf、self.vectorizer、self.tfidftransformer、self.stop_...

audio = np.frombuffer(b''.join(frames), dtype=np.long) input_values = tokenizer(audio, return_tensors="pt").input_values.type(torch.LongTensor) with torch.no_grad(): logits = model(input_values).logits RuntimeError: expected scalar type Long but found Float

audio = np.frombuffer(b''.join(frames), dtype=np.long) input_values = tokenizer(audio, return_tensors="pt").input_values.type(torch.LongTensor).to(device) model.to(device) with torch.no_grad(): ...

from keras.preprocessing.text import Tokenizer from keras.preprocessing.sequence import pad_sequences tokenizer = Tokenizer() tokenizer.fit_on_texts(poems) poems_digit = tokenizer.texts_to_sequences(poems) vocab_size = len(tokenizer.word_index) + 1 vocab_size

这段代码的作用是使用 Keras 库中的 Tokenizer 类对诗歌进行编码。具体来说，它完成了以下几个步骤： 1. 创建一个 Tokenizer 对象 tokenizer。 2. 使用 fit_on_texts() 方法将诗歌数据 poems 中的所有词汇加入到 ...

请解释一下这段代码 train_features = np.zeros((len(train_sequences), embedding_dim)) for i, sequence in enumerate(train_sequences): for j, word_index in enumerate(sequence): if word_index != 0: train_features[i][j] = np.mean(model[tokenizer.index_word[word_index]])

这段代码什么意思 train_features = np.zeros((len(train_sequences), embedding_dim)) for i, sequence in enumerate(train_sequences): for j, word_index in enumerate(sequence): if word_index != 0: train_features[i][j] = np.mean(model[tokenizer.index_word[word_index]])

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请解释一下这段代码 train_features = np.zeros((len(train_sequences), embedding_dim)) for i, sequence in enumerate(train_sequences): for j, word_index in enumerate(sequence): if word_index != 0: train_features[i][j] = np.mean(model[tokenizer.index_word[word_index]])

这段代码什么意思 train_features = np.zeros((len(train_sequences), embedding_dim)) for i, sequence in enumerate(train_sequences): for j, word_index in enumerate(sequence): if word_index != 0: train_features[i][j] = np.mean(model[tokenizer.index_word[word_index]])

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这段代码什么意思 embedding_dim = 300 vocab_size = len(tokenizer.word_index) + 1 embedding_matrix = np.zeros((vocab_size, embedding_dim)) for word, i in tokenizer.word_index.items(): if word in model: embedding_matrix[i] = model[word]

audio = np.frombuffer(b''.join(frames), dtype=np.long) input_values = tokenizer(audio, return_tensors="pt").input_values.type(torch.LongTensor) with torch.no_grad(): logits = model(input_values).logits RuntimeError: expected scalar type Long but found Float

from keras.preprocessing.text import Tokenizer from keras.preprocessing.sequence import pad_sequences tokenizer = Tokenizer() tokenizer.fit_on_texts(poems) poems_digit = tokenizer.texts_to_sequences(poems) vocab_size = len(tokenizer.word_index) + 1 vocab_size

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