Updated Articles

  1. Math of AHP

    The Math of AHP -- Computing priorities from pairwise comparisons Eigenvector computation Priorities for the elements in a cluster are derived from the relative pairwise comparisons by normalizing the principle right eigenvector of the matrix co...
  2. TeamTime Evaluation Welcome

    The welcome screen has been prepared by the Project Manager and typically contains instructions and possibly links for you to explore.
  3. Missing Judgments

    The number of judgments in a cluster, n ( n -1) divided by 2, refers to the maximum number of pairwise comparisons in a cluster.  However, Expert Choice can compute priorities from an eigenvector equation when there are missing judgments.  At a min...
  4. Redundant Judgments

    A minimum spanning set of judgments for a cluster of n elements consists of a set of n -1 judgments, in that every element can be "reached" from every other element.  It is necessary to have a spanning set of judgments in order to compute the pri...
  5. Problems with traditional rating scales

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  6. Absolute Measurement

    Relative measurement in AHP is performed by comparing two elements, e.g., objectives or alternatives, one to another; whereas absolute measurement is performed on each element, e.g., alternatives, one at a time.  There are several ways this is done ...
  7. Focus on Objectives

    Criteria, Objectives, and Attributes are terms that are often used interchangeably when making decisions.   Traditionally, people speak of criteria. We recommend focusing on "objectives" instead of criteria.  This helps clarify what should and sho...
  8. Importance of Hierarchical Structuring

    Humans have difficulty dealing with more than seven - plus or minus two - factors at a time.  To overcome this cognitive limitation, objectives can be structured into a hierarchy of clusters of elements.  One of the axioms of AHP is that the element...
  9. Create Evaluation Quick Help

    Quick Help is custom help set up by the Project Manager to be shown during the evaluation process.  The Project Manager can view and set up Quick Help (QH) from the QH icons found at the top right of every evaluation step.  An empty Quick Hel...
  10. How to Save Judgments?

    Your judgments are automatically recorded when you move to another step by using the " Next, " " Previous ," or " Next Unassessed " button.