Algorithm 2. Candidate Selection by Partial Vector Bin Packing
1	Input:
2	$\omega \leftarrow$ the weight for traffic as metric
3
4	$\mathcal{P}\leftarrow$ the set of candidates of the final plan
5	for each$v\in \mathcal{V}$do
6	$\mathrm{𝕔}\leftarrow v.\mathbb{C}\left[0\right]$
7	$\mathcal{P}.Apply\left(\mathrm{𝕔}\right)$
8	end for
9
10	while$true$then
11	$n_r\leftarrow null$ // the reconfigure node
12	for each $n\in \mathcal{N}$ do
13	$\left[r_n^{cpu.req},r_n^{mem.req},r_n^{sto.req}\right]\leftarrow GetRequiredResources\left(n,\mathcal{P}\right)$
14	if $r_n^{cpu}<r_n^{cpu.req} \vee r_n^{mem}<r_n^{mem.req} \vee r_n^{sto}<r_n^{sto.req}$ then
15	$n_r\leftarrow n$
16	Break
17	end if
18	end for
19	if $n_r=null$ then break
20	$metri{c}_{max}\leftarrow -\infty$
21	$\left[{\mu }_a, {\sigma }_a\right]\leftarrow GetAngleStats\left(\mathcal{P}\right)$
22	$\left[{\mu }_{{\tau }_d}, {\sigma }_{{\tau }_d}\right]\leftarrow GetTrafficDiffStats\left(\mathcal{P},\mathcal{V}\right)$
23	$r_n\leftarrow \left[r_{n_r}^{cpu},r_{n_r}^{mem},r_{n_r}^{sto}\right]$
24	for each $s\in n_r.S$ do
25	$r_s\leftarrow \left[r_s^{cpu},r_s^{mem},r_s^{sto}\right]$
26	$\alpha \leftarrow {\cos }^{-1}\left((r_n·r_s)/\left(\left|r_n\right|\left|r_s\right|\right)\right)$
27	${\mathrm{𝕔}}_{next}\leftarrow GetNextCandidate\left(s\right)$
28	if ${\mathrm{𝕔}}_{next}=null$ then continue
29	${\tau }_d\leftarrow GetTrafficDiff\left({\mathrm{𝕔}}_s,{\mathrm{𝕔}}_{next}\right)$
30	${\alpha }^z\leftarrow \left(\alpha -{\mu }_{\alpha }\right)/{\sigma }_{\alpha }$
31	${\tau }_d^z\leftarrow \left({\tau }_d-{\mu }_{{\tau }_d}\right)/{\sigma }_{{\tau }_d}$
32	$metric\leftarrow {\alpha }^z\times \left(1-\omega \right)-{\tau }_d^z\times \omega$
33	if $metri{c}_{max}<metric$ then
34	$metri{c}_{max}\leftarrow metric$
35	$s_r\leftarrow s$
36	end if
37	end for
38	$\mathcal{P}.Remove\left({\mathrm{𝕔}}_{s_r}\right)$
39	${\mathrm{𝕔}}_{next}\leftarrow GetNextCandidate\left(s_r\right)$
40	if ${\mathrm{𝕔}}_{next}=null$ then break
41	else then$\mathcal{P}.Apply\left({\mathrm{𝕔}}_{next}\right)$
42	end if
43	end while
44
45	Output:
46	return$valid ?\mathcal{P}:\varnothing$