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The device is supplied with four detectors (see section 1.3) |
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Fig. 6.
A threshold device for the setting of figure 5 |
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would be assigned the quadruple of detector values (1,1,0,0). (Note the large reduction in the number of situations to be evaluatedthere are 216@ 64,000 different arrays but only 24 = 16 detector value quadruples.) |
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The threshold devices of interest are specified by |
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where each wi can be chosen from the set {-2,- 1,0,1,2}. A 4-by-4 array S is assigned to C+ if f(S) ³ ½, otherwise it is assigned to C-. |
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To determine what transformation from {h1,h2,h3} is to be invoked at choice point j each of the three arrays Sjx, Sjy, Sjzis submitted to f. If exactly one of Sjx, Sjy, Sjzis assigned to C+ the corresponding corridor is followed, otherwise a corridor is chosen at random (and, presumably, the adaptive plan is invoked to modify the weights because of the lack of a unique prediction). |
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