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Data Analytics Lifecycle
Data science projects differ from most traditional Business Intelligence projects and many data analysis projects in that data science projects are more exploratory. For this reason, it is critical to have a process to govern them and ensure that the participants are thorough and rigorous in their approach, yet not so rigid that the process impedes exploration. Many problems that appear huge and daunting at first can be broken down into smaller pieces or actionable phases that can be more easily addressed.
Having a good process ensures a comprehensive and repeatable method for conducting analysis. Also, it helps focus time and energy early in the process to get a clear grasp of the business problem to be solved. A common mistake made in data science projects is rushing into data collection and analysis, which precludes spending sufficient time to plan and scope the amount of work involved, understanding requirements, or even framing the business problem properly. Consequently, participants may discover mid-stream that the project sponsors are trying to achieve an objective that may not match the available data, or they are attempting to address an interest that differs from what has been explicitly communicated. When this happens, the project may need to revert to the initial phases of the process for a proper discovery phase, or the project may be canceled. Creating and documenting a process helps demonstrate rigor, which provides additional credibility to the project when the data science team shares its findings. A well-defined process also offers a common framework for others to adopt, so the methods and analysis can be repeated in the future or as new members join a data scientist training team.
Data Analytics Lifecycle Overview
The Data Analytics Lifecycle is designed specifically for Big Data problems and data science projects. The lifecycle has six phases, and project work can occur in several phases at once. For most phases in the lifecycle, the movement can be either forward or backward. This iterative depiction of the lifecycle is intended to more closely portray a real project, in which aspects of the project move forward and may return to earlier stages as new information is uncovered and team members learn more about various stages of the project. This enables participants to move iteratively through the process and drive toward operationalizing the project work.
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