Returns an accumulator function which incrementally computes the mean arctangent absolute percentage error.
accumulator function
var accumulator = incrmaape();
var m = accumulator();
// returns null
m = accumulator( 2.0, 3.0 );
// returns ~0.3218
m = accumulator( 5.0, 2.0 );
// returns ~0.6523
m = accumulator();
// returns ~0.6523
If provided input values, the accumulator function returns an updated mean arctangent absolute percentage error. If not provided input values, the accumulator function returns the current mean arctangent absolute percentage error.
Notes
NaN
or a value which, when used in computations, results inNaN
, the accumulated value isNaN
for all future invocations.input value
input value
mean arctangent absolute percentage error or null