Information Technology Reference
In-Depth Information
Ta b l e 1 Soft goals - reasons for poor achievement
Soft goal
Main reasons for poor achievement
Meeting delivery due dates
Quality problems, machine failure, unskilled workers
Increasing machine utilization
Set up times, quality problems, machine failure
Reducing waste of raw materials
Quality problems, inappropriate machine setup
Increasing product quality
Inappropriate machine setup, poor quality of raw material,
poor machine condition, inappropriate quality inspection
Reducing production costs
Raw material cost, raw material waste, labor cost
4 The Learning Approach
The proposed learning approach includes a learning life-cycle, described in Fig. 2.
The learning cycle can be initiated when a process has already been performed for a
period of time, so some experience has already been accumulated. This experience
is stored in an experience base, including data of past process instances: their actual
path, their achieved outcome, and their context information. Note that context infor-
mation includes all the environmental variables, as we cannot tell in advance which
ones are relevant.
The life cycle includes two main phases: a learning phase and the application of
its results in runtime, which, in turn, produces more experience to be stored in the
experience base for the next cycle.
The learning phase includes a step of initial context identification, which yields
a definition of context groups. These groups serve as a basis for the generation of
Fig. 2 The proposed learning cycle
 
 
 
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