324 ◾ Design Science Research Methods and Patterns
by extending existing concepts with new knowledge or knowledge from outside cur-
rent practice. Abbasi and Chen show the desirability of a CMC text analysis system
that incorporates analysis of content. ey then construct ameta-design for such a
system by embedding content analysis concepts into prior feature analysis designs.
e process extends the concepts rather than usingthem asself-contained units as
would result from the pattern building blocks.
Evaluation and Validation Patterns (Evaluation Phase)
Experimentation
Validation of artifact performance was via experiments (carefully controlled com-
parisons). An industry standard program for feature characterization was used as
a baseline. ...