Buyin Negative (buyin_neg)
Contents
Buyin Negative. Number of scaled components of -(vector) exceeding threshold_1 and below threshold_2
Syntax
buyin_neg(w, matrix) |
short call |
buyin_neg_name(w, matrix) |
call with optional name |
Parameters
matrix is a PSG matrix:
where the header row contains names of variables. Other rows contain numerical data, 
. The second numerical row is optional. If the second numerical row is not present, then, by default, all values of 
are equal to 1.
 | is a threshold value. |
Mathematical Definition
Buyin Negative function is calculated as follows
,
where
is small threshold value,
is an argument of Buyin Negative function.
Remarks
It is recommended to select the multiplier row (the second numerical row) equal to the unit vector and 
. For instance if decision variables are measured in thousands than 
.
Example
See also
Cardinality Positive, Cardinality Negative, Cardinality, Buyin Positive, Buyin, Fixed Charge Positive, Fixed Charge Negative, Fixed Charge