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. 2021 Jan 1;124:102931. doi: 10.1016/j.trc.2020.102931
Notation Definition
Sets and Indexes
i Index set of row i∈{1,2,…,I}
j Index set of column j∈{1,2,…,J}
k Index set of group k∈{1,2,…,K}
r Index set of interaction type r∈{1,2,…,R}