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导论
1.知识工程概念
知识工程指所有包括构建、维护和使用知识库系统(knowledge based system)在内的技术性、科学性、社会性的方面。
知识库系统是指推理和使用知识库解决复杂问题的计算机程序。一个知识库系统具有两个显著特征:一个知识库和一个推理机。
2.经典定义-早期专家系统
3.现代定义-大数据背景下的知识工程及机器学习范式
information→knowledge:数学模型、最优化、运筹学、统计学、机器学习、数据挖掘、文本挖掘等手段。
4.机器学习定义
1.Arthur Samuel 1959
Machine Learning:Field of study that gives computers the ability to learn without being explicitly programmed.
2.Tom Mitchell 1998
Well-posed Learning Problem:A computer program is said to learn from experience E with respect to some task T and some performance measure P, if its performance on T, as measured by P, improves with experience E.
5.分类
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