778 / 1359
III. Remember: in a factor-based formalisms, factors should cancel out!
IV. The error in factor-based models is proportional to the number of factors:
V. The number of measurements can be reduced by modelling some of the factors
(e.g non physical wedge factor)
(
)
a b
n
D
f
f
f D calibration M
M
...
a
b
a
b
f
f
D
D f
f
+ +
In conclusion:
D cond. a
M
=
Τ
D calib M ∙
Τ
D cond. d M
Τ
D calib M
∙
Τ
D cond.
M
Τ
D cond. d M
∙
Τ
D cond.
M
Τ
D cons. c M
∙
Τ
D cond. a M
Τ
D cond. b M