CommandRankingByProblemclass
A command ranking criterion that measures a “problem” by a count of occurrences stored in a property of the CommandRanking object. For example, we could count the number of noun phrases that don’t resolve to any objects.
On the first, coarse-grained pass, we measure only the presence or absence of our problem. That is, if one parse tree has zero occurrences of the problem and the other has a non-zero number of occurrences of the problem (as measured by our counting property), then we’ll prefer the one with zero occurrences. If both have no occurrences, or both have a non-zero number of occurrences, we’ll consider the two equivalent for the first pass, since we only care about the presence or absence of the problem.
On the second, fine-grained pass, we measure the actual number of occurrences of the problem, and choose the parse tree with the lower number.
class CommandRankingByProblem : CommandRankingCriterion
Superclass Tree (in declaration order)
CommandRankingByProblem
CommandRankingCriterion
` object`
Subclass Tree
(none)
Global Objects
rankByActorSpecified rankByAllExcluded rankByDisambigOrdinals rankByEmptyBut rankByIndefinite rankByInsufficient rankByListForSingle rankByMiscWordList rankByMissing rankByNonMatch rankByUnwantedPlural rankByVocabNonMatch
Summary of Properties
Summary of Methods
Properties
prop_
our ranking property - this is a property of the CommandRanking object that gives us a count of the number of times our “problem” has occurred in the ranking object’s parse tree
Methods
comparePass1 (a, b)OVERRIDDEN
first pass - compare by presence or absence of the problem
comparePass2 (a, b)OVERRIDDEN
second pass - compare by number of occurrences of the problem
TADS 3 Library Manual
Generated on 5/16/2013 from TADS version 3.1.3