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SEBERTNets:一种面向金融领域的事件主体抽取方法

简介

“事件识别”是舆情监控领域和金融领域的重要任务之一,“事件”在金融领域是投资分析,资产管理的重要决策参考。“事件识别”的复杂性在于事件类型和事件主体的判断,比如“公司A产品出现添加剂,其下属子公司B和公司C遭到了调查”,对于“产品出现问题”事件类型,该句中事件主体是“公司A”,而不是“公司B”或“公司C”。我们称发生特定事件类型的主体成为事件主体,本任务中事件主体范围限定为:公司和机构。事件类型范围确定为:产品出现问题、高管减持、违法违规…

本次评测任务的主要目标是从真实的新闻语料中,抽取特定事件类型的主体。即给定一段文本T,和文本所属的事件类型S,从文本T中抽取指定事件类型S的事件主体。

输入:一段文本,事件类型S

输出:事件主体

示例:

样例1

输入:”公司A产品出现添加剂,其下属子公司B和公司C遭到了调查”, “产品出现问题”

输出: “公司A”

样例2

输入:“公司A高管涉嫌违规减持”,“交易违规”

输出: “公司A”

方法

“事件识别”是舆情监控领域和金融领域的重要任务之一,在金融领域是投资分析、资产管理的重要决策参考。然而,“事件识别”的复杂性复杂性在于事件类型和事件主体的判断。本文提出了一种新的模型,SequenceEnhancedBERTNetworks(简称:SEBERTNets),该模型既可以继承BERT模型的优点,即在少量的标签样本中可以取得很好的很好的效果,同时利用序列模型(如:GRU、LSTM)可以捕捉文本的序列语义信息。

运行环境

  • tensorflow==1.14.0

  • keras==2.2.4

  • keras-bert==0.69.0

运行方法

wget https://storage.googleapis.com/bert_models/2018_11_03/chinese_L-12_H-768_A-12.zip
python SEBERT_model.py

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