Effective Application of Improved Profit-Mining Algorithm for the Interday Trading Model

Pseudocode 1

The pseudocode of genBP.

(1) genBP

(2) Parameters:

(3)  prefix         : Pattern

(4)  index, interval     : int

(5) Begin

(6)  if interval > maxspan then

(7)   return

(8)  end if

(9)  if index < |oneItemList| then

(10)   for 𝑖 = index to |oneItemList|−1

(11)    BP = oneItemList[𝑖]

(12)    BP = shift(BP, interval)

(13)    BP = join(prefix, BP)

(14)

(15)    if sup(BP) ≥ minsup

(16)     genSP(BP, null, 0, 0 )

(17)     genBP(BP, 𝑖+1, interval)

(18)    end if

(19)   end for

(20)  end if

(21)

(22)  if prefix.length > 0 then

(23)   genBP(prefix, 0, interval + 1)

(24)  end if