Algorithm 1: ALPHA-CO.

Initialization: Set $k=0$. Set the initial control input to the minimum satisfactory lighting levels ${\mathit{w}}_0={\xi }_{low}$ while$\epsilon \left(\mathit{w}\right)\le E_L$ and $\left|f{\left(\mathit{I}\right)}_k-f{\left(\mathit{I}\right)}_{k-1}\right|\le \epsilon$ do for$i=1$ to N do $\acute{\mathit{w}}\Leftarrow GenerateDimmingVector\left(\mathit{w},i\right)$ according to (19) $\acute{\mathit{I}}=I_{max}\acute{\mathit{w}}$ Evaluate (1)–(13) until $t=t_{w\_sp}$ and determine the sensitivity function ${\lambda }_i$ end for $\mathit{w}\Leftarrow \acute{\mathit{w}}$ that maximizes $\lambda$ ${\mathit{I}}_k=I_{max}\mathit{w}$ Calculate $\epsilon \left(\mathit{w}\right)$ Increment $k$ by 1 end while Output ${\mathit{w}}^{*}$