View source for Northern Sámi and Norwegian/Derivations

== Removing unhandled derivations from the analyser ==
Any derivations that are not handled we remove from the analyser with a twol negation rule in rm-deriv-cmp.twol

<pre>
UnhandledDerivations /<= _ ; ! fail if analysis contains a tag from the set UnhandledDerivations
</pre>

Derivations of derivations are removed with this rule (if these are ever needed, we should just lexicalise):

<pre>
Derivation /<= Derivation+ PartOfSpeech+ _ ;
</pre>

since double derivations are not handled either unless there are explicit transfer rules for them. This makes the lexicon a lot easier to handle for testvoc. [[Northern Sámi and Norwegian/Derivations#Summary of fallbacks|Summary of fallbacks]] below contains the list of derivations that are and aren't handled.