The robustness of any classification will depend on the quality of the decisions made at each point of the construction process.

• The robustness of any classification will depend on the quality of the decisions made at each point of the construction process.

• Initial trial classification can be seen as a draft – some decisions were made hastily in order that some output be produced which could then be improved upon.

• In refining the classification Important decisions need to be made in relation to:

• data
• methodology