在早期,许多语言处理系统是通过人工编码一组规则来设计的<ref name=winograd:shrdlu71>{{cite thesis |last=Winograd |first=Terry |year=1971 |title=Procedures as a Representation for Data in a Computer Program for Understanding Natural Language |url=http://hci.stanford.edu/winograd/shrdlu/ }}</ref><ref name=schank77>{{cite book |first=Roger C. |last=Schank |first2=Robert P. |last2=Abelson |year=1977 |title=Scripts, Plans, Goals, and Understanding: An Inquiry Into Human Knowledge Structures |location=Hillsdale |publisher=Erlbaum |isbn=0-470-99033-3 }}</ref>: 例如通过编写语法或设计用于词干提取的'''[[启发式 Heuristic]]'''规则。 | 在早期,许多语言处理系统是通过人工编码一组规则来设计的<ref name=winograd:shrdlu71>{{cite thesis |last=Winograd |first=Terry |year=1971 |title=Procedures as a Representation for Data in a Computer Program for Understanding Natural Language |url=http://hci.stanford.edu/winograd/shrdlu/ }}</ref><ref name=schank77>{{cite book |first=Roger C. |last=Schank |first2=Robert P. |last2=Abelson |year=1977 |title=Scripts, Plans, Goals, and Understanding: An Inquiry Into Human Knowledge Structures |location=Hillsdale |publisher=Erlbaum |isbn=0-470-99033-3 }}</ref>: 例如通过编写语法或设计用于词干提取的'''[[启发式 Heuristic]]'''规则。 |