Although these models have frequently been used, there is a criticism on such learning process as the number of rules are needed to be predefined by the user.
Albeit, the objectives of a course need to be predefined in order to facilitate expert feedback on all training goals.
Training objectives need to be predefined and to be clear to both tutor and trainee, in order to guide and structure the feedback.
This means that all decompositions need to be predefined and have to be compatible with the distributed organisation of the system.
The importance of this approach is that the imaging parameters (e.g. spatial binning and signal integration) do not need to be predefined.
Second, unlike the K-mean or EM methods [ 21], the number of clusters does not need to be predefined.
We chose to use an implicit review process because the potential range of judgements that would need to be predefined for an explicit review process would have been substantial and unwieldy, and yet might still not have covered key issues.
An advantage of GeneTrail is that functional categories for investigation by the program need not to be predefined by the software developers, the categories can also be created by the users themselves according to their personal fields of interest.
