Viewing the size and direction of adjustment

 

We can examine the bearing and the standardised bearing for the current adjustment by using the b  and b*  arguments to the SHOW:  command:

BD>show: b

BD>show: b*

 
Figure 18:  The bearing

 
Figure 19:  The standardised bearing

giving respectively the output shown in figure 18 and figure 19. This output (which we discuss further in section 5.5) consists of, for figure 18:

• the bearing , with the coefficients of and shown in addition to a constant;
• the size of the adjustment (equivalent to the bearing variance), ;
• the expected size of the adjustment (which we can show to be equal to the resolution of the belief structure , );
• and the size ratio, , being the ratio of the actual size of adjustment to the expected size.

and for figure 19:

• the same bearing given above, , expressed in terms of the quantities and standardised to have expectation zero and variance unity. (The constant term for the standardised bearing is zero, and is not output.)