Mystery Number Five - Computational Linguistics and Talking Robots - page 92

6.1.7 A PPLYING R ULE _1 OF LA- ACT 1 TO A red TRIGGER

Rule_1 {Rule_2}

⎡
⎣

⎤
⎦

⎡
⎣

⎤
⎦

rec: T n
next: M1
prn: K i

act: M1
prev: T n
prn: K i +1

rule level

output position nw

matching and binding

⎡
⎣

⎤
⎦

⎡
⎣

⎤
⎦

rec: red
prev:
next: strght
prn: x 1

act: strght
prev: red
next: left
prn: x 2

Word Bank level

By matching the first proplet pattern at the rule level to the corresponding first
proplet at the Word Bank level, the trigger variable T n is bound to red ,the
motion variable M1 is bound to strght ,andthe prn variable K i is bound to x 1 .
In this way, the variables in the second pattern at the rule level are provided
with values which are sufficient to retrieve (navigate to, activate) the second
proplet shown at the Word Bank level, 2 i.e., the proplet with the core value

strght and the prn value x 2 .
After the successful application of Rule_1, its rule package calls Rule_2,
which takes the second proplet of 6.1.7 (Word Bank level) as input and con-
tinues the navigation through the stimulus-response sequence in question:

6.1.8 A PPLYING R ULE _2 OF LA- ACT 1 TO A strght MOTION

Rule_2 {Rule_2}

⎡
⎣

⎤
⎦

⎡
⎣

⎤
⎦

act: M1
next: M2
prn: K i

act: M2
prev: M1
prn: K i +1

rule level

output position nw

matching and binding

⎡
⎣

⎤
⎦

⎡
⎣

⎤
⎦

act: strght
prev: red
next: left
prn: x 2

act: left
prev: strght
next: right
prn: x 3

Word Bank level

Again, the variables of the first proplet pattern at the rule level are bound to
the corresponding values of the corresponding proplet at the Word Bank level
(which is the proplet the previous rule application 6.1.7 navigated to). With
these values, the second proplet pattern at the rule level retrieves the second
proplet shown at the Word Bank level, i.e., the motion proplet left . Because
the rule package of Rule_2 calls Rule_2, this rule is reapplied until there are
no more sequence-internal successor proplets in the Word Bank.

2 The mechanism of this navigation is the same as the one illustrated in 3.4.2 for LA-think and in 3.4.3
for LA-speak.