Mystery Number Three - Computational Linguistics and Talking Robots - page 63

fies the input-output channels for the language and the context level, shown
separately in diagram 4.3.2. There is a rule component and a content com-
ponent (Word Bank), which provide the structural basis for the rule level to
govern the processing of content at the memory level (7) - with data-driven
feedback from the memory level to the rule level (8).
The rule component and the Word Bank are each connected unidirectionally
to the I/O component. All recognition output of the I/O component is input
to the rule component (5), where it is processed and passed on to the Word
Bank (7). All action input to the I/O component comes from the Word Bank
(6), derived in frequent (8, 7) interactions with the rule component.
The operations of the I/O component are realized by the pattern matching
4.5.1 (a) and (b), which are based on the type-token relation. The interaction
between the rule component and the Word Bank is realized by the pattern
matching operations 4.5.2 (a-e), which are based on restricted variables. The
only application of pattern matching listed in 4.5.1 and 4.5.2 which apparently
has no place in 4.5.3 is 4.5.1 (c), i.e., reference. This is because it is entirely
contained in the Word Bank of 4.5.3, as shown below:

4.5.4 I NTEGRATING DIAGRAM 4.3.2 INTO DIAGRAM 4.5.3

cognitive agent

peripheral
cognition

central cognition

rule component

5

1

7i 8i 7ii 8ii

6

2

Word Bank

3 4

The separate external interfaces for the language and the context component
in diagram 4.3.2 are recreated in 4.5.4 by dividing 7 and 8 of 4.5.3 into 7i and
8i for the context level, and into 7ii and 8ii for the language level.
While 4.5.4 serves to reconciliate the different component structures of 4.3.2
and 4.5.3 conceptually, it is misleading insofar as the Word Bank actually con-
tains nothing but owner proplets and member proplets organized in time-linear