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A DATA mining Procedure Using Neural Network- Self Organization Map and Rough Set to Discover Association Rules

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Figure 1. Data mining steps
Table 2 presents the records sampled from our purchase  database. The attributes of the records were normalized  and clustered, where GID is the cluster number and TID is  the transaction identification number
Figure 5. Flow chart of implementing Rough set
Table 6 is an example of cluster hit ratio table for attribute  DEPT.  Take on for example in Table 6, the hit ratio for  cluster DEPT=0.1 is calculated as follows:
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