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has increased by more than x between each of last n results

has increased by more than x between each of last n results is used to detect cases in which the values for an attribute have an increasing trend. The condition will be true for a case if the current sample value is a number and, amongst the previous n numerical samples, each is bigger than the previous by more than x. The change can be expressed in either absolute or percentage terms.

For example, given the following case fragment,

           01 Jun 03    20 Jun 03    30 Jun 03    15 Oct 03    02 Nov 03
ABC           1.2          1.6          1.8          2.0          2.3
DEF                        2.9          4.0                       5.1
GHI           9.0          10.1         11.5                      13.1

ABC has increased by more than .1 between each of last 5 results

DEF has increased by more than 1 between each of last 3 results

GHI has increased by more than 10 percent between each of last 4 results