基于事件属性的事件分类研究

Research on Categorization of Events Based on Event Attributes

事件分类研究一直是计算机科学和语言学等学科的核心研究内容,针对动词语义层面上的分类问题,研究者们提出了不同的分类标准,而根据这些分类标准对动词进行分类会产生分类有交叉和分类粒度粗等问题。一个动词通常表示一个过程事件,该文以汉语世界中经常发生的过程事件为语义分类对象,从事件的定义中提取事件的特征属性,并给每个特征属性赋予权重,利用特征属性对顶层事件类包含的事件进行分类。该文采用框架的形式对事件进行语义描述,框架内容由事件的特征属性和私有属性组成。重点以"传播"类事件为例来阐述该文的分类方法,通过实际操作发现,利用该分类方法,可以得到一个比较清晰的事件语义分类结构。该文用描述逻辑来对事件及事件之间的分类关系进行形式化表示。根据该事件分类体系,可以有效获取事件属性相关的常识知识。

Aimed at the categorization of events with procedure,we propose an event semantic categorization method based on event attributes.We extract the characteristic attributes of an event from its definition and assign the weight to each characteristic attribute.We adopt the frame semantics to represent an event,which consists of characteristic attributes and private attributes.This paper utilizes the class of"dissemination events"as an example to demonstrate our categorization method.We prove that a clear semantic categorization structure of events can be obtained with this method.We use description logics to formalize the events and the relationships between these events.According to this event classification system,we can effectively acquire commonsense knowledge related to event attributes.