deletions | additions       diff --git a/subsection_Video_Graph_Data_Structure__.tex b/subsection_Video_Graph_Data_Structure__.tex  index 0f57cc4..afd67d4 100644  --- a/subsection_Video_Graph_Data_Structure__.tex  +++ b/subsection_Video_Graph_Data_Structure__.tex 
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\item $sparsity_i$: the number of non-zeros bins in the bow histogram $hist_i$.   \item $hist^c_i$: the concatenated color histogram vector of s_i region over 3-channels (RGB), $\mathbb{R}^{10} \times 3$  \item $hist^g_i$: the orientation histogram vector of s_i region with 50 directional bins, $\mathbb{R}^{50}3$  \item $label_i$: $li$:  the action label of $s_i$ region. region, $l_i \in L$.  \end{itemize}