Phase 3: Ideas evolution. It covers pre-processing,
evaluation, ranking and selection as Figure 4 shows. The preprocessing
is to analysis the generated initial research ideas as
a good sentence and topic from language perspective. Natural
Language Processing techniques are adopted to support the
pre-processing, which include syntactic, semantic and
pragmatic. After pre-processing, it is evaluation part that is to
measure the ideas’ creativity via designed metrics. There are
three main metrics: novelty, usefulness and surprising. Details
of the three metrics and designed formulas are proposed and
designed in a recently accepted conference paper [18].
According to the evaluation results, the research ideas are
ranked and selected to form the final generated ideas.