may be some one has this Experience:
I would like to find cannbalization in a transactions. I have read this nice essay P.29-30 it says that we could use Bray-Curtis distance to find cannibalization, but how can I implement that for such rules:
1 {} => {262012} 0.10813429 0.1081343 1.000000
2 {} => {211050} 0.11001969 0.1100197 1.000000
3 {} => {275001} 0.13768607 0.1376861 1.000000
4 {} => {274001} 0.16672743 0.1667274 1.000000
5 {} => {121001} 0.44729742 0.4472974 1.000000
6 {275006} => {211050} 0.05095780 0.8717035 7.923159
7 {211050} => {275006} 0.05095780 0.4631699 7.923159
8 {275006} => {274001} 0.05197863 0.8891661 5.333052
9 {274001} => {275006} 0.05197863 0.3117581 5.333052
10 {231050} => {231051} 0.06063479 1.0000000 16.492183
11 {231051} => {231050} 0.06063479 1.0000000 16.492183
12 {231050} => {275001} 0.05490568 0.9055145 6.576661
13 {275001} => {231050} 0.05490568 0.3987744 6.576661
14 {231050} => {274001} 0.06063479 1.0000000 5.997813
15 {274001} => {231050} 0.06063479 0.3636761 5.997813
16 {231050} => {121001} 0.05639525 0.9300807 2.079334
17 {121001} => {231050} 0.05639525 0.1260800 2.079334
...
Does any one do something like this?
