Hyper-relation

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Revision as of 20:17, 16 August 2013

Relations may have relations as arguments. In this case, they are said to be "hyper-relations". Examples of hyper-relations are the following:

• XP(XB(%a;%b);%c) - a syntactic relation XP between the syntactic relation XB(%a;%b) and the node %c
• and(agt([a];[b]);agt([a];[c])) - a semantic relation "and" between the semantic relations agt([a];[b]) AND agt([a];[c])

Properties of hyper-relations

A hyper-relation may have one single relation as each argument

• XP(XB(%a;%b);%c) - the source argument of the hyper-relation XP is a relation
• XP(%a;XB(%b;%c)) - the target argument of the hyper-relation XP is a relation
• XP(VC(%a;%b);VA(%a;%c)) - the source and the target argument of the hyper-relation XP are relations
• XP(VC(%a;%b)VA(%a;%c);VS(%a;%d)) - a hyper-relation may not have more than one relation as one single argument (in this case, the hyper-relation XP contained two relations as the source argument)

Relations do not have strings, UWs, headwords or any features

• XP(XB(%a;%b),"ab",[ab],[[ab]],A,B;%c) (the relation XB(%a;%b) may not have strings, UWs, headwords or any features)