Data Warehousing and Data Mining - Old Questions

3. List the problems of Apriori algorithm with its possible solutions. Consider the following transaction dataset.

Transaction_ID          Item_List

T1                                 {K, A, D, B}

T2                                 {D,A,C,E,B}

T3                                 {C,A,B,E}

T4                                 {B,A,D}

What association rules can be found in this set, if the minimum support is 3 and the minimum confidence is 80%.