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(0,0), if object is at the center of receptive field
(1,0), if object is on the left of the center
(0,1), if object is on the right of the center
Ë
Ì
(d 2 ,d 3 )=
{
1, if system is near to objects
0, other
d 4 =
{
1, object is large
0, other
d 5 =
{
1, object is flat and long
0, other
d 6 =
detector
Receptive filed
motion
vector
visual vector
d 1
d 2
object
d 3
d 4
1 1 0 1 1
Fig. 13.5. A simple visual classifier system
Consider an irritation-reaction classifier, which has the following rules:
IF a prey(small, moving, nonstriped object) is centered and nonadjacent
THEN quickly move toward the object (ALIGN),(FAST).
In order to realize this rule, detection value is used as condition, which is
expressed in the form of #'s. The 2- triple (00) denotes the message generated
in input interface. According to above definition, the classifier has the following
condition:
00########000001
where the leftmost 2 bits are label, # is irrelevent to bits, and the rightmost 6 bits
are the values of prescriptive detectors. If the condition is satisfied, the following
message is sent out by classifier:
0100000000000000
where the prefix 01 shows that this message does not come from input interface.
This message can be used to set the condition of effector of output interface. The
whole rule is as follows:
00#########000001 / 0100000000000000ALIGNFAST.
In a warning system, the following rule can be used to determine whether or
not the system is in a warning state:
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