Stock Control Linguistic Variables	Range of values	Very Poor	Poor	Good	Very Good
FuzzyOpen	Very Poor ( $V P_{o}$ ) $5 < V P_{o} \leq 27$ Poor ( $P_{o}$ ) $10 < P_{o} \leq 39.7$ Good ( $G_{o}$ ) $22 < G_{o} \leq 50$ Very Good ( $V G_{o}$ ) $36 < V G_{o} \leq 50$	$μ_{(V P_{o})} = {\begin{cases} 0, V P_{o} < 5 \\ < 1, 5 \leq V P_{o} < 12.5 \\ 1, V P_{o} = 12.5 \\ < 1, 12.5 < V P_{o} \leq 27 \end{cases}$	$μ_{(P_{o})} = {\begin{cases} 0, P_{o} < 10 \\ < 1, 10 < P_{o} < 25 \\ 1, P_{o} = 25 \\ < 1, 25 < P_{o} \leq 39.7 \end{cases}$	$μ_{(G_{o})} = {\begin{cases} 0, G_{o} < 22 \\ < 1, 22 < G_{o} < 37.5 \\ 1, G_{o} = 37.5 \\ < 1, 37.5 < G_{o} \leq 50 \end{cases}$	$μ_{(V G_{o})} = {\begin{cases} 0, V G_{o} < 36 \\ < 1, 36 < V G_{o} < 50 \\ 1, V G_{o} = 50 \end{cases}$
FuzzyHigh	Very Poor ( $V P_{h}$ ) $5 < V P_{h} \leq 27$ Poor ( $P_{h}$ ) $10 < P_{h} \leq 39.7$ Good ( $G_{h}$ ) $22 < G_{h} \leq 50$ Very Good ( $V G_{h}$ ) $36 < V G_{h} \leq 50$	$μ_{(V P_{h})} = {\begin{cases} 0, V P_{h} < 5 \\ < 1, 5 \leq V P_{h} < 12.5 \\ 1, V P_{h} = 12.5 \\ < 1, 12.5 < V P_{h} \leq 27 \end{cases}$	$μ_{(P_{h})} = {\begin{cases} 0, P_{h} < 10 \\ < 1, 10 < P_{h} < 25 \\ 1, P_{h} = 25 \\ < 1, 25 < P_{h} \leq 39.7 \end{cases}$	$μ_{(G_{h})} = {\begin{cases} 0, G_{h} < 22 \\ < 1, 22 < G_{h} < 37.5 \\ 1, G_{h} = 37.5 \\ < 1, 37.5 < G_{h} \leq 50 \end{cases}$	$μ_{(V G_{h})} = {\begin{cases} 0, V G_{h} < 36 \\ < 1, 36 < V G_{h} < 50 \\ 1, V G_{h} = 50 \end{cases}$
FuzzyLow	Very Poor ( $V P_{l}$ ) $5 < V P_{l} \leq 27$ Poor ( $P_{l}$ ) $10 < P_{l} \leq 39.7$ Good ( $G_{l}$ ) $22 < G_{l} \leq 50$ Very Good ( $V G_{l}$ ) $36 < V G_{l} \leq 50$	$μ_{(V P_{l})} = {\begin{cases} 0, V P_{l} < 5 \\ < 1, 5 \leq V P_{l} < 12.5 \\ 1, V P_{l} = 12.5 \\ < 1, 12.5 < V P_{l} \leq 27 \end{cases}$	$μ_{(P_{l})} = {\begin{cases} 0, P_{l} < 10 \\ < 1, 10 < P_{l} < 25 \\ 1, P_{l} = 25 \\ < 1, 25 < P_{l} \leq 39.7 \end{cases}$	$μ_{(G_{l})} = {\begin{cases} 0, G_{l} < 22 \\ < 1, 22 < G_{l} < 37.5 \\ 1, G_{l} = 37.5 \\ < 1, 37.5 < G_{l} \leq 50 \end{cases}$	$μ_{(V G_{l})} = {\begin{cases} 0, V G_{l} < 36 \\ < 1, 36 < V G_{l} < 50 \\ 1, V G_{l} = 50 \end{cases}$
FuzzyClose	Very Poor ( $V P_{c}$ ) $5 < V P_{c} \leq 27$ Poor ( $P_{c}$ ) $10 < P_{c} \leq 39.7$ Good ( $G_{c}$ ) $22 < G_{c} \leq 50$ Very Good ( $V G_{c}$ ) $36 < V G_{c} \leq 50$	$μ_{(V P_{c})} = {\begin{cases} 0, V P_{c} < 5 \\ < 1, 5 \leq V P_{c} < 12.5 \\ 1, V P_{c} = 12.5 \\ < 1, 12.5 < V P_{c} \leq 27 \end{cases}$	$μ_{(P_{c})} = {\begin{cases} 0, P_{c} < 10 \\ < 1, 10 < P_{c} < 25 \\ 1, P_{c} = 25 \\ < 1, 25 < P_{c} \leq 39.7 \end{cases}$	$μ_{(G_{c})} = {\begin{cases} 0, G_{c} < 22 \\ < 1, 22 < G_{c} < 37.5 \\ 1, G_{c} = 37.5 \\ < 1, 37.5 < G_{c} \leq 50 \end{cases}$	$μ_{(V G_{c})} = {\begin{cases} 0, V G_{c} < 36 \\ < 1, 36 < V G_{c} < 50 \\ 1, V G_{c} = 50 \end{cases}$