I'm looking for a function that count number of objects that belong to a
specific cluster but I dont know if such function exists.
For example I'm trying to count number of objects in variable Z[i] but
with Cardinal function I get an error tha says "invalid preceding
operator == " what does it mean?
Thanks in advance.
This is my code:
# PARAMETROS
param noitems ; # numero de items
param nometodos ; # numero de metodos
#param nocategorias ; # numero de categorias
# CONJUNTOS
set ITEMS := 1..noitems ; # Items
set METODOS := 1..nometodos ; # Metodos
set CATEGORIAS ; # Categorias
# DATOS
param clasini{i in ITEMS , j in METODOS} , integer ;
param nocategorias := card(CATEGORIAS);
param Porcentaje{k in 1.. nocategorias} ;
# VARIABLES DE DECISION
#var Z{ITEMS} in CATEGORIAS , integer ;
var Z{i in ITEMS} ;
# VARIABLES AUXILIARES PARA LINEALIZAR
var T{i in ITEMS, j in METODOS} ;
# MODELO MATEMATICO
# Funcion objetivo
minimize distance: sum{i in ITEMS , j in METODOS} T[i,j] ;
# Restricciones
s.t. Positivo{i in ITEMS , j in METODOS }: Z[i] - clasini[i,j] <=
T[i,j] ;
s.t. Negativo{i in ITEMS , j in METODOS }: -Z[i] + clasini[i,j] <=
T[i,j] ;
s.t. Proporcion{k in 1..card(CATEGORIAS)}: card({i in ITEMS: k in
Z[i]}) <= noitems*Porcentaje[k];
solve;
--
Rafael Torres
"La luna se puede tomar a cucharadas o como una cápsula cada dos horas..."
- Jaime Sabines -
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