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## 基于LSTM三分类的文本情感分析 ### 背景介绍 文本情感分析作为NLP的常见任务，具有很高的实际应用价值。本文将采用LSTM模型，训练一个能够识别文本postive, neutral, negative三种情感的分类器。 本文的目的是快速熟悉LSTM做情感分析任务，所以本文提到的只是一个baseline，并在最后分析了其优劣。对于真正的文本情感分析，在本文提到的模型之上，还可以做很多工作，以后有空的话，笔者可以再做优化。 ### 理论介绍 #### RNN应用场景 RNN相对于传统的神经网络，它允许我们对向量序列进行操作：输入序列、输出序列、或大部分的输入输出序列。如下图所示，每一个矩形是一个向量，箭头则表示函数（比如矩阵相乘）。输入向量用红色标出，输出向量用蓝色…
☆16Nov 14, 2019Updated 6 years ago
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