Database Reference
In-Depth Information
8.2.1 D
EFINITION OF
LA-
CONTENT
ST
S
=
def
{([RA:
] {rules 1-16})}
Comment: The Start State of LA-content is unusual because it allows the initial proplet to have any
core attribute
(re-presented by the replacement variable for attributes
RA
), and any
core value
(re-
presented by the binding variable
α
, cf. NLC'06, Sect. 4.1). Also, the rule package (hence RP)
calls all of the 16 rules available. Next consider the first rule, N
/
V:
α
⎡
⎣
⎤
⎦
⎡
⎣
⎤
⎦
⇒
⎡
⎣
⎤
⎦
⎡
⎣
⎤
⎦
{rules 2-6 and 8-16}
noun:
α
fnc:
prn:
verb:
β
arg:
prn:
noun:
α
fnc:
β
prn: K
verb:
β
arg:
α
prn: K
1. N
/
V:
Comment: The rule N
V corresponds to the intrapropositional subject-verb relation in English. The
common
prn
value
K
indicates an intrapropositional relation. The relation is transparent because
the attributes in the input patterns equal the attributes in the output patterns (this condition holds for
the rules 1-7 and 16). The rule cross-copies the core values matched by
/
into the
fnc
slot
of the noun and the
arg
slot of the verb. The rule package omits rule 1 (N
/
V), thus ensuring that
an elementary proposition will have only one “subject” - though N
−
N coordinations of the subject
are allowed. The RP omits rule 7 (A
−
A) because it cannot connect to N
/
V.
α
and
β
⎡
⎣
⎤
⎦
⎡
⎣
⎤
⎦
⇒
⎡
⎣
⎤
⎦
⎡
⎣
⎤
⎦
{rules 1-6, and 8-16}
noun:
α
fnc:
prn:
verb:
β
arg: X
prn:
noun:
α
fnc:
β
prn: K
verb:
β
arg: X
α
prn: K
2. N
\
V:
Comment: The rule N
\
V corresponds to the intrapropositional object-verb relation in English. As-
suming X
=
NIL, the only difference of this rule from rule 1 (N
/
V) is the
non-initial
position of
α
in the
arg
slot of the verb, indicating the role of an object. By its calling itself (rule 2 is included
in the rule package), more than one object may be added; the number of objects required is deter-
mined “lexically” by the concept matching
V without
permitting more than one subject requires somewhat more complicated input patterns, which are
omitted for simplicity.
β
. Allowing an application of N
\
VbeforeN
/
⎡
⎣
⎤
⎦
⎡
⎣
⎤
⎦
⇒
⎡
⎣
⎤
⎦
⎡
⎣
⎤
⎦
{rules 1-2, 4-7, 10-11, and 14}
adj:
α
mdd:
prn:
noun:
β
mdr:
prn:
adj:
α
mdd:
β
prn: K
noun:
β
mdr:
α
prn: K
3. A
|
N:
Comment: The rule A
N corresponds to the intrapropositional relation between an adnominal mod-
ifier and a noun in English. The rule cross-copies core values matched by
|
into the
mdd
slot of the adj and the
mdr
slot of the noun. The RP omits A
|
N, but calls rule 7 (A
−
A); in this way
multiple adnominal modifiers as in
the fuzzy little black dog
are treated as an intrapropositional
coordination. The RP omits rules matching two V nodes because they cannot connect to A
|
N.
α
and
β
⎡
⎣
⎤
⎦
⎡
⎣
⎤
⎦
⇒
⎡
⎣
⎤
⎦
⎡
⎣
⎤
⎦
{rules 1-4 and 6-16}
adj:
α
mdd:
prn:
verb:
β
mdr:
prn:
adj:
α
mdd:
β
prn: K
verb:
β
mdr:
α
prn: K
4. A
|
V:
Comment: The rule A
V corresponds to the intrapropositional relation between an adverbial modi-
fier and a verb in English. The rule cross-copies the core values matched by
|
into the
mdd
slot of the adj and the
mdr
slot of the verb. The rule calls itself (the rule package contains A
α
and
β
V);
in this way, a verb may have several modifiers, though not necessarily via a coordination. The RP
omits rule 5 (N
−
N) because it cannot connect to A
|
V.
|
⎡
⎤
⎡
⎤
⎡
⎤
⎡
⎤
⎦
{rules 1-3, 5, 10, 14}
noun:
α
nc:
prn:
noun:
β
pc:
prn:
noun:
α
nc:
β
prn: K
noun:
β
pc:
α
prn: K
⎣
⎦
⎣
⎦
⇒
⎣
⎦
⎣
5. N
−
N:
Comment: The rule N
−
N corresponds to the intrapropositional relation between two noun con-
juncts in English. The rule cross-copies the core values matched by
α
and
β
into the
nc
slot of the
first noun and the
pc
slot of the second noun. The RP calls rule 5 (N
−
N), and omits all rules which
do not match an N, because they cannot connect to N
−
N.
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