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- begin{subequations}label{matrix_and_trace}
- begin{tabularx}{textwidth}{Xp{2cm}X}
- begin{eqnarray}
- &textrm{textbf{Original textit{Matrix} Lifting}}nonumber\
- [-0.5em]
- & max_{bm Y_{textrm{RS}}} frac{1}{2} textrm{Tr} (bm L bm Y_{textrm{RS}}) nonumber\
- [-0.5em]
- & textrm{s.t.}~textrm{diag}(bm Y_{textrm{RS}}) = textcolor{red}{bm u_n} nonumber\
- [-0.5em]
- & kbm Y_{textrm{RS}} - bm J_{n} succeq 0 nonumber\
- [-0.5em]
- &bm Y_{textrm{RS}} geq 0nonumber\
- [-0.5em]
- &textrm{Tr}(bm J bm Y_{textrm{RS}})= sum_{i=1}^k m_i^2
- end{eqnarray}
- & &
- begin{eqnarray}
- & textrm{textbf{Original textit{Trace} Formulation}}nonumber\
- [-0.5em]
- & max_{bm Y_{textrm{FJ}}} frac{k-1}{2k} textrm{Tr} (bm L bm Y_{textrm{FJ}})nonumber\
- [-0.5em]
- &textrm{s.t.}~ textrm{diag}(bm Y_{textrm{FJ}}) = bm u_nnonumber\
- [-0.5em]
- &textcolor{red}{bm Y_{textrm{FJ}} succeq 0}nonumber\
- [-0.5em]
- &(Y_{i,j})_{textrm{FJ}}geq frac{-1}{k-1}, i neq j nonumber\
- [-0.5em]
- &textrm{Tr}(bm J bm Y_{textrm{FJ}}) = frac{1}{k-1}(k sum_{i=1}^k m_i^2 - n^2)
- end{eqnarray}
- end{tabularx}
- end{subequations}
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