Difference between revisions of "ID-rule"
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| − | + | An ID rule ''X'' <math>\rightarrow</math> <math>Y_1,</math> <math>Y_2,</math> ..., <math>Y_n </math> is interpreted as a well-formedness condition for [[local tree|local trees]]: It licenses all local trees with a root ''X'' and daughters <math>Y_1,</math> <math>Y_2,</math> ..., <math>Y_n </math>. The order of the daughters dominated by ''X'' is considered to be irrelevant. | |
===See also=== | ===See also=== | ||
Revision as of 11:23, 24 September 2007
An ID rule X <math>\rightarrow</math> <math>Y_1,</math> <math>Y_2,</math> ..., <math>Y_n </math> is interpreted as a well-formedness condition for local trees: It licenses all local trees with a root X and daughters <math>Y_1,</math> <math>Y_2,</math> ..., <math>Y_n </math>. The order of the daughters dominated by X is considered to be irrelevant.
See also
Comment
Das Konzept der ID-Regel wurde ursprünglich im Rahmen der Generalisierten Phrasenstrukturgrammatik entwickelt. Instead of ID rules, Head-Driven Phrase Structure Grammar uses so-called ID schemata.
Formally, the righthand side of an ID rule can be considered as a multi sets.
Other Languages
- German ID-Regel
