There has been little or no attention until present given to making ordering relationships explicit within NLP practice. Without such an explicit discussion, work in NLP is significantly flawed − thus, the care with which the issue, for example, of hierarchies was presented.

We developed the notion of several possible ordering relationships operating in hierarchies: more specifically, part/whole hierarchical orderings and what we referred to as logical level hierarchical orderings.

◆Logical level hierarchical orderings 論理レベル階層順序

 −Logical inclusion 論理的包含

論理的包含(Logical inclusion)は、収縮(constriction)と継承性(inheritability)の二つの特性によって明確に規定された順序関係です。

1. constriction - reduced coverage under each successive partition induced by relative clause formation

    収縮 - 相対的な句の形成によって誘導されるそれぞれの連続的な分割の下での範囲の減少。


2. inheritability - the preservation of the set membership criteria under partition by relative clause formation

    継承性 - 相対的な句の形成による分割の下での集合の要素であることの基準の保持。


◆part/whole hierarchical orderings 部分/全体階層順序

1. constriction - 

    収縮 - しない(拡張する)

2. inheritability - 

    継承性 - あることもないこともある


Hierarcies formed onthe part/whole relationship are very different creatures than hierarchies generated by logical inclusion. The reduced scope principle − constriction − seems to be inverted − that is, in general, the further down a hierarchy specified by the part/whole relationship you go, the larger the scope, the greater the coverage of events by the sets enumerated. Sets lower in the hierarchy have more members than those above them. There is no clear generalizatoin with respect to the inheritability requirement that we have been able to formulate. It seems that presently transparent to us.

by John Grinder & Carmen Bostic St. Clair