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Columnwise Mining – Lecture Notes

A B C D 6 A E 7 A B 8 A B C 9 A C D 10 B   →   A B C D E 1 1 2 2 1 4 2 3 4 3 5 5 4 5 6 6 7 8 9 7 8 9 8 10 9   →   A B C D E 1-1 1-2 2-4 2-2 1-1 4-9 5-5 8-9 4-5 3-3 7-8 9-9 6-6 10-10 column representation [...] C E 8 C D 9 A B D 10 A B D Item TIDlist A 1 2 3 4 7 9 10 B 1 2 3 4 5 6 7 9 10 C 1 5 7 8 D 1 3 4 5 6 8 9 10 E 1 2 3 5 6 7 C is eliminated. Initial class: A 1 2 3 4 7 9 10 OK B 1 2 3 4 5 6 7 9 10 OK D 1 [...] 1 3 4 5 6 8 9 10 OK E 1 2 3 5 6 7 OK 1-Partition A: A B 1 2 3 4 7 9 10 OK A D 1 3 4 9 10 OK A E 1 2 3 7 X 2-Partition A B: A B D 1 3 4 9 10 OK 1-Partition B: B D 1 3 4 5 6 9 10 OK B E 1 2 3 5 6 7 OK 2-Partition …

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Columnwise Mining – Lecture Notes

A B C D 6 A E 7 A B 8 A B C 9 A C D 10 B   →   A B C D E 1 1 2 2 1 4 2 3 4 3 5 5 4 5 6 6 7 8 9 7 8 9 8 10 9   →   A B C D E 1-1 1-2 2-4 2-2 1-1 4-9 5-5 8-9 4-5 3-3 7-8 9-9 6-6 10-10 column representation [...] C E 8 C D 9 A B D 10 A B D Item TIDlist A 1 2 3 4 7 9 10 B 1 2 3 4 5 6 7 9 10 C 1 5 7 8 D 1 3 4 5 6 8 9 10 E 1 2 3 5 6 7 C is eliminated. Initial class: A 1 2 3 4 7 9 10 OK B 1 2 3 4 5 6 7 9 10 OK D 1 [...] 1 3 4 5 6 8 9 10 OK E 1 2 3 5 6 7 OK 1-Partition A: A B 1 2 3 4 7 9 10 OK A D 1 3 4 9 10 OK A E 1 2 3 7 X 2-Partition A B: A B D 1 3 4 9 10 OK 1-Partition B: B D 1 3 4 5 6 9 10 OK B E 1 2 3 5 6 7 OK 2-Partition …

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