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Friday 24 May 2013

Dissertation Series - CRISP DM - Step one Business Understanding


A development methodology specific to data mining is CRISP-DM (CRoss Industry Standard Process for Data Mining) a methodology conceived in 1996 by IT professionals and was based on their experiences of data mining implementations (The modelling agency, 2000 p.3).
CRISP DM is broken into six distinct steps, at some points the outcome of the step may require repeating the previous step.
Step 1 – Business understanding
This step is broken into several sub-steps which set the scene for the data mining development, it is broadly similar to the PID (Project Initiation Document) that makes up a PRINCE2 project (OGC, 2005 p.40-41).
Determine business objectives
Considers the business and its overall goals/objectives so as to set the scene (The Modelling Agency, 2000 p.16), discussing data warehouses Mukherjee and D’Souza (2003 p.84) agree with their statement that “DW implementation can be considered a success not only because it satisfies a need at a point in time, but also because it serves the continuing needs of an organization”.
Assess situation
Looks at available resources and any associated legal issues/risks (The Modelling Agency, 2000 p.17), this prevents undertaking work that cannot be completed due to resourcing issues and prevents work being undertaken that cannot be made use of because of legal issues.  The impact of the development can also be factored in to compare the intended value gained against the resource required (The Modelling Agency, 2000 p.18).
Determine data mining goals
It is important in any project to ensure that the aim and associated objectives are clear (OGC, 2005 p.50).  This sub-step of business understanding ensures that the goals are clearly defined and understood (The Modelling Agency, 2000 p.18), this allows the final outcome to be measured against these to ensure that the requirements have been met.
Project plan
The final sub-step of business understanding is the construction of a project plan, breaking the project into the steps that will be undertaken, the resources that will be required at each stage and identifies dependencies that may cause bottle necks in the delivery of the project (The Modelling Agency, 2000 p.19).  Traditional project management techniques/solutions can be made use of in undertaking this such as PRINCE2 and Microsoft Project.

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