Research Article
Negative and Positive Association Rules Mining from Text Using Frequent and Infrequent Itemsets
Table 4
Positive and negative rules from both frequent and infrequent itemsets.
| (a) Positive rules from frequent itemsets |
| | Rule | Support | Confidence | Lift |
| | {chemo radiation treatment} → {tumor} | 0.2 | 1 | 2.0 | | {surgery tumor} → {radiation} | 0.25 | 1 | 1.4286 | | {radiation surgery} → {tumor} | 0.25 | 0.8333 | 1.6667 | | {treatment} → {radiation} | 0.45 | 0.9 | 1.2857 | | {treatment tumor} → {radiation} | 0.3 | 1 | 1.4286 | | {tumor} → {radiation} | 0.5 | 1 | 1.4286 |
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| (b) Negative rules from frequent itemsets |
| | Rule | Support | Confidence | Lift |
| | {radiation} → {~cancer} | 0.5 | 0.7143 | 1.0204 | | {~temodar} → {radiation} | 0.4825 | 0.8333 | 1.6667 | | {~radiation} → {glioblastoma} | 0.65 | 1 | 1.4285 |
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| (c) Positive rules from infrequent itemsets |
| | Rule | Support | Confidence | Lift |
| | {cancer treatment} → {tumor} | 0.15 | 1 | 2 | | {doctor temodar} → {chemo} | 0.05 | 1 | 2.8571 | | {brain chemo} → {doctor} | 0.15 | 1 | 2.2222 | | {mri tumor} → {brain} | 0.1 | 1 | 2.5 |
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| (d) Negative rules from infrequent itemsets |
| | Rule | Support | Confidence | Lift |
| | {chemo} → {~surgery} | 0.35 | 1 | 1.5385 | | {glioblastoma} → {~treatment} | 0.3 | 1 | 2.13 | | {chemo} → {~glioblastoma} | 0.35 | 0.95 | 1.4286 |
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