jbellik
commented
3 years ago Constraint definition:
- Category insensitive: "For every category k in pCat (defined in prosodicHierarchy.js), assign a violation for every node of category k in the prosodic tree ptree that is a) non-terminal and b) does not contain any nodes of category > k-2."
- Category insensitive, for category k: "Assign a violation for every node of category k in the prosodic tree ptree that is a) non-terminal and b) does not contain any nodes of category > k-2."
Write the following function:
function headedness(stree, ptree, cat): Return the number of nodes in ptree that a) have children and b) do not have a child of the next lower category or the same category.
If cat is defined, then only count nodes of category cat. If cat is not defined, count nodes of any category that lack a head.
Definition of head: a node of category k has a head if a) it is a terminal (we will assume it is headed, by default), or b) it contains a node in its array of children that is of category k or k-1. If all its children are of category k-2 or lower in the prosodic hierarchy (see prosodicHierarchy.js), then it is unheaded.
For example, a node of category cat: 'i' would be unheaded if its children are all of cat: 'w'. But it would be headed if it contains at least one node of cat: 'phi' (= category k-1) or cat: 'i' (= category k).
maxTarlov
We should have a constraint Headedness under "Layering and structure" in the non-hidden part. Both cat-sensitive and cat-insensitive as options.