ECv	Edge Contribution value
EMT	Epithelial-Mesenchymal Transition
BN	Bayesian Network
DEG	Differentially Expressed Gene
TCGA	The Cancer Genome Atlas project
NNSR	the Neighbor Node Sampling and Repeat algorithm
NSCLC	Non-Small Cell Lung Cancer
LUAD	Lung Adenocarcinoma
LUSC	Lung Squamous Cell Carcinoma
X	n-by-p data matrix whose element $x_{ij}$ corresponds to the expression value of the j-th gene at the i-th sample (samples: $1\le i\le n$, genes: $1\le j\le p$)
$p{a}_{ik}^{(j)}$	expression value of the k-th parent of the j-th gene at the i-th sample
$\mathit{\theta }$	parameter vector of the conditional density
$m_k^{(j)}(p{a}_{ik}^{(j)})$	value of the regression curve by B-splines, or contribution of the k-th parent of the j-th gene to the expression value of $x_{ij}$
${\sigma }_j$	standard deviation for total observations of the j-th gene
$EC{v}_{(i)}(j_k\to j)$	edge contribution value for edge $j_k\to j$ with respect to the i-th sample
E	n-by-m ECv matrix whose element $e_{iv}$ corresponds to ECv of the v-th edge at the i-th sample (samples: $1\le i\le n$, edges: $1\le v\le m$)