帮我利用pytorch和Bert写一个情绪分类的代码,要求输入是一组句子对,输出格式为numpy
时间: 2023-04-05 17:00:34 浏览: 118
好的,我可以回答这个问题。以下是代码示例:
```python
import torch
from transformers import BertTokenizer, BertForSequenceClassification
# 加载预训练的Bert模型和tokenizer
tokenizer = BertTokenizer.from_pretrained('bert-base-chinese')
model = BertForSequenceClassification.from_pretrained('bert-base-chinese', num_labels=2)
# 输入句子对
sentences = ['我很开心', '我很难过']
# 将句子对转换为Bert模型的输入格式
inputs = tokenizer(sentences, padding=True, truncation=True, return_tensors='pt')
# 使用Bert模型进行情绪分类
outputs = model(**inputs)[0]
# 将输出转换为numpy格式
predictions = torch.argmax(outputs, dim=1).numpy()
print(predictions)
```
输出格式为numpy数组,其中0表示负面情绪,1表示正面情绪。
相关问题
帮我利用pytorch和Bert写一个情感分类的代码,要求输入是一组句子对,输出格式为numpy
好的,我可以回答这个问题。以下是一个基于PyTorch和Bert的情感分类代码,输入为一组句子对,输出格式为numpy:
```
import torch
from transformers import BertTokenizer, BertForSequenceClassification
# 加载Bert模型和tokenizer
tokenizer = BertTokenizer.from_pretrained('bert-base-chinese')
model = BertForSequenceClassification.from_pretrained('bert-base-chinese', num_labels=2)
# 定义情感分类函数
def predict_sentiment(sentence_pair):
# 对句子进行tokenize和padding
inputs = tokenizer(sentence_pair, padding=True, truncation=True, return_tensors='pt')
# 使用Bert模型进行预测
outputs = model(**inputs)
# 获取预测结果
logits = outputs.logits
# 将结果转换为numpy格式
return logits.detach().numpy()
# 示例输入
sentence_pair = ["这个电影真的很好看", "这个电影真的很难看"]
# 进行情感分类预测
result = predict_sentiment(sentence_pair)
print(result)
```
输出结果为一个numpy数组,其中每个元素表示对应句子对的情感分类结果。
帮我利用pytorch和Bert写一个情绪分类的代码,其中,情绪类别包括开心,生气,悲伤,惊讶,害怕和一般,要求输入是一组句子对,输出格式为numpy
好的,我可以回答这个问题。以下是利用pytorch和Bert写一个情绪分类的代码,其中,情绪类别包括开心,生气,悲伤,惊讶,害怕和一般,要求输入是一组句子对,输出格式为numpy:
```python
import torch
from transformers import BertTokenizer, BertForSequenceClassification
tokenizer = BertTokenizer.from_pretrained('bert-base-uncased')
model = BertForSequenceClassification.from_pretrained('bert-base-uncased', num_labels=6)
def predict_emotion(sentence_pair):
inputs = tokenizer(sentence_pair, padding=True, truncation=True, return_tensors='pt')
outputs = model(**inputs)
logits = outputs.logits
predictions = torch.argmax(logits, dim=1)
return predictions.numpy()
```
你可以使用 `predict_emotion` 函数来预测一组句子对的情绪类别,例如:
```python
sentence_pair = ["I am happy", "I am sad"]
predictions = predict_emotion(sentence_pair)
print(predictions)
```
输出将是一个numpy数组,包含每个句子对的情绪类别。
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