delphin.semi
Semantic interfaces (SEM-Is) describe the inventory of semantic components in a grammar, including variables, properties, roles, and predicates. This information can be used for validating semantic structures or for filling out missing information in incomplete representations.
The following DELPH-IN wikis contain more information:
- Technical specifications: http://moin.delph-in.net/SemiRfc
- Overview and usage: http://moin.delph-in.net/RmrsSemi
The load module function is used to read the regular file-based SEM-I definitions, but there is also a dictionary representation which may be useful for JSON serialization, e.g., for an HTTP API that makes use of SEM-Is. See SemI.to_dict() for the later.
load
The main class modeling a semantic interface is SemI. The predicate synopses have enough complexity that two more subclasses are used to make inspection easier: Synopsis contains the role information for an individual predicate synopsis, and each role is modeled with a SynopsisRole class.
SemI
The data in the SEM-I can be directly inspected via the variables, properties, roles, and predicates attributes.
>>> smi = semi.load('../grammars/erg/etc/erg.smi') >>> smi.variables['e'] <delphin.tfs.TypeHierarchyNode object at 0x7fa02f877388> >>> smi.variables['e'].parents ['i'] >>> smi.variables['e'].data [('SF', 'sf'), ('TENSE', 'tense'), ('MOOD', 'mood'), ('PROG', 'bool'), ('PERF', 'bool')] >>> 'sf' in smi.properties True >>> smi.roles['ARG0'] 'i' >>> for synopsis in smi.predicates['can_able'].data: ... print(', '.join('{0.name} {0.value}'.format(roledata) ... for roledata in synopsis)) ... ARG0 e, ARG1 i, ARG2 p >>> smi.predicates.descendants('some_q') ['_another_q', '_many+a_q', '_an+additional_q', '_what+a_q', '_such+a_q', '_some_q_indiv', '_some_q', '_a_q']
Note that the variables, properties, and predicates are ~delphin.tfs.TypeHierarchy objects.
find_synopsis
from_dict
to_dict
Synopsis(roles)
SynopsisRole(name, value, properties=None, optional=False)
SemIError
SemISyntaxError
SemIWarning