project 2.docx

Overview







 association rules



!





!

)*



Association Rules

+

)*

,-,

./01

')* binary )!"*,

! Condence2

:)63*/;)<6*/()6=*()6*

 63 

 6 >"  ()6*?@:)63*?A @ A 



In Other Words (less mathematically)

An association rule is an implication of the form:B3C, whereBC>". The left-hand side

(B; LHS) is calledantecedent, and the right-hand side (C; RHS) isconsequent.

TheB3Crelation could be interpreted asifBthenC.

To extract association rules, we need to find frequentif – thenpatterns. To achieve that, we rely

)*!

" EF 

  +  

 !##

   <EF< 

-  

G  



!'

H









! join 



)*!

+

 home world ##

 name ##'

!

 field1 '

 headers2 

)##*

 sheet2



 sheet1

 sheet2 

)field1 field2*!

 (result_header,result_sheet)

! result_header 

MG

G

 

$2

>>> join(

["name","classication","language","homeworld"],

[["Hutt", "gastropod","Huttese","Nal Hutta"],

["Sullustan","mammal", "Sullutese","Sullust"]],

"homeworld",

["name", "climate","gravity"],

['Sullustan', 'mammal', 'Sullutese', 'Sullust', 'superheted', '1']])

>>> join(