Hitachi Vantara Pentaho Community Forums
Results 1 to 2 of 2

Thread: Trouble understanding association rules output

  1. #1
    Join Date
    Oct 2015
    Posts
    2

    Default Trouble understanding association rules output

    What are those values right to the itemsets (for example [A=1]:18)
    If they are absolute support as I thought, why are they different for same items in different rules ?

    [A=1]: 18 ==> [B=1]: 6 <conf 0.33)> lift 52.63)
    ...
    [B=1]: 38 ==> [A=1]: 6 <conf 0.16)> lift 52.63)

    Clearly I'm missing something here,
    I really hope you can help me please.

  2. #2
    Join Date
    Dec 2015
    Posts
    3

    Default Trouble understanding association rules output

    Quote Originally Posted by GionJh View Post
    What are those values right to the itemsets (for example [A=1]:18)
    If they are absolute support as I thought, why are they different for same items in different rules ?

    [A=1]: 18 ==> [B=1]: 6 <conf 0.33)> lift 52.63)
    ...
    [B=1]: 38 ==> [A=1]: 6 <conf 0.16)> lift 52.63)

    Clearly I'm missing something here,
    I really hope you can help me please.
    hey

    the numbers like 18, 38 indicates the number of transactions that support A=1 ==> B=1 , 18 in case of the first rule.

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Privacy Policy | Legal Notices | Safe Harbor Privacy Policy

Copyright © 2005 - 2019 Hitachi Vantara Corporation. All Rights Reserved.