Database Reference
In-Depth Information
The word form surfaces are always realized from the
goal
proplet (goal node)
of a traversal. Traversal of arc 1 realizes the definite article from the
def
value
in
girl
, traversal of arc 2 realizes the surface
little
from the core value of
little
,
traversal of arc 3 realizes the surface
girl
from the core and the
sem
value of
girl
, traversal of arc 4 realizes the surface
ate
from the core and the
sem
value
of
eat
, traversal of arc 5 realizes the surfaces
an apple
(multiple realization)
from the
sem
and the core value of
apple
, and traversal of arc 6 realizes the
full stop from the
cat
value of
eat
.
Given the proplet NAG 7.4.2, the definition of LA-speak rules for English is
easy: 1. take the proplet pair (elementary signature) of the traversal in ques-
tion, 2. define the rule patterns by (i) selecting the relevant attributes and (ii)
replacing their constant values with variables, 3. specify the successor rule(s)
in the rule package, and 4. derive a surface from certain proplet values using
the appropriate lex function as defined in NLC'06, Sect. 14.3. This procedure
results in the definition of the following LA-speak grammar:
15
7.4.3 LA-
SPEAK GRAMMAR FOR THE PROPLET
NAG 7.4.2
0. START
{DET-ADN, DET-CN }
⎡
⎤
verb:
α
arg: X
prn: K
⎣
⎦
rule level
⎡
⎣
⎤
⎦
verb: eat
cat: decl
sem: past
arg: girl apple
prn: 7
content level
Comment: The derivation begins with the Start State of the grammar, which matches the verb proplet
eat
and activates the Start rule package containing the rules DET-ADN and DET-CN.
Next, arc 1 is traversed by the following application of the rule DET-ADN (for determiner to be
followed by an adnominal):
1. DET-ADN
{ADN}
⎡
⎣
⎤
⎦
noun:
β
sem:
γ
fnc:
α
mdr:
δ
prn: K
the
⇑
lex(
⎡
⎣
⎤
⎦
verb:
α
arg: X
β
Y
prn: K
γ
)
rule level
⇒
⎡
⎣
⎤
⎦
⎡
⎣
⎤
⎦
verb: eat
cat: decl
sem: past
arg: girl apple
prn: 7
noun: girl
sem: def sg
fnc: eat
mdr: little
prn: 7
content level
Comment: The proplet patterns of the rule level match corresponding proplets in the NAG 7.4.2. The rule
package activates ADN as the next rule. The output arrow
⇒
shows the application of the lex function
defined in NLC'06, 14.3.2. Based on binding the variable
γ
of the rule level to the
sem
values
def sg
of the goal proplet
girl
, the lex function realizes the surface
the
. Next, arc 2 is traversed.
Search WWH ::
Custom Search