Identifying the Association Rules between Clinicopathologic Factors and Higher Survival Performance in Operation-Centric Oral Cancer Patients Using the Apriori Algorithm

Algorithm 3

Pseudocode of the function apriori-gen().

01: Function apriori-gen (𝐿_𝑘−1)

02: set 𝐶_𝑘← Ø

03: for (all 𝐿_𝑘−1.𝑖𝑡𝑒𝑚_𝑝, 𝐿_𝑘−1.𝑖𝑡𝑒𝑚_𝑞 ∣ 𝐿_𝑘−1.𝑖𝑡𝑒𝑚_𝑝[i] =

  𝐿_𝑘−1.𝑖𝑡𝑒𝑚_𝑞[i], ∀i ∈{1,…,𝑘−2})

04:  c ={𝐿_𝑘−1.𝑖𝑡𝑒𝑚_𝑝[1],…,𝐿_𝑘−1.𝑖𝑡𝑒𝑚_𝑝[k−2], 𝐿_𝑘−1.𝑖𝑡𝑒𝑚_𝑝

  [k−1], 𝐿_𝑘−1.𝑖𝑡𝑒𝑚_𝑞 [k−1]}

05: if (∀𝐿_𝑘−1.𝑖𝑡𝑒𝑚⊂𝑐)

06: 𝐶_𝑘←𝐶_𝑘∪𝑐

07: end if

08: end for

09: end Function