dec.err is a frequency that describes the
number of individuals in the current population
for which the decision is incorrect or erroneous (i.e., cases in which the
decision does not correspond to the condition).
An object of class
numeric of length 1.
The frequency of
dec.err individuals depends on the population size
is equal to the sum of false negatives
mi and false positives
to other frequencies:
In a population of size
N the following relationships hold:
N = cond.true + cond.false (by condition)
N = dec.pos + dec.neg (by decision)
N = dec.cor + dec.err (by correspondence of decision to condition)
dec.cor = hi + cr
dec.err = mi + fa
N = hi + mi + fa + cr (by condition x decision)
Current frequency information is computed by
comp_freq and contained in a list
Consult Wikipedia: Confusion matrix for additional information.
is_freq verifies frequencies;
num contains basic numeric parameters;
init_num initializes basic numeric parameters;
freq contains current frequency information;
comp_freq computes current frequency information;
prob contains current probability information;
comp_prob computes current probability information.
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