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OCR for page 208
SYNOPSIS OF GENERAL AUDIENCE DISCUSSION
Two general points wale raise] from the floor.
1. When discussing natural language ~nterfa~-= for human-computer
interaction, one should make a clear separation between those
requiring a~;tory input and those accepting natural language.
Although these two features are highly correlated, they need not
be. One could consider a speech input that would restrict
language to a subset, such as single word oo=mands or even
special codes. Similarly, there could be natural language input
that was entered via keyboard. Although there is an additional
memory load Em posed on the user if speech input accepted only a
subset of natural language, there may be some applications that
could effectively use this mode.
. ,
2. Allen Newell wished to emphasize the importance of having
specific, detailed cognitive models as the basis for design ng
human-computer interfaces. m e current researchers who
using this approach is very small, and though growing
exponentially, the growth rate is very "leisurely." The
ad roach has the advantage of not only specifying details of the
processing mechanisms of cognition and their interaction, but
also of specifying the details of the task the user is engaged
in. Having the details of the took ~ ~ provide benefits beyond
redesign of the interface. key could serve as the basis f ~ u
which the task itself could be redesigned, affording
prcUuctivity enhancements from a straightforward efficiency
analysis. Newell recommended a strong incentive be established
for researchers to conduct their work in the context of
cumulative, model-based theories of cognition, and let the
design principles fall from them.
208
Representative terms from entire chapter:
speech input
