Changes between Version 26 and Version 27 of BluePrintVITA


Ignore:
Timestamp:
12/23/09 19:32:07 (12 years ago)
Author:
Dominic König
Comment:

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  • BluePrintVITA

    v26 v27  
    2626VITA applications record a presence log for each person entity. Each log entry is established through a recognition event, i.e. when the entity is recognized by a dedicated observer (human or automatic).
    2727
    28 Recognition can happen implicitly, e.g. when other data are obtained directly from the entity. In these cases, the time and location of the observer are used to establish a presence.
    29 
    30 Recognition can happen explicitly, i.e. in response to observation requests. In these cases, the time and location as determined by the request are used to establish a presence. Explicit recognition events may lead to establishment of explicit absence (=this one not here now).
     28Recognition might happen implicitly, e.g. when other data are obtained directly from the entity. In these cases, the time and location of the observer are used for the record. Recognition can also happen explicitly, i.e. in response to observation requests. In such cases, the observation time and location determined by the request are used.
    3129
    3230'''Location'''s in presence records represent geospatial features, which can basically be of any valid feature class (points, polygons, lines etc.). Where references to locations are used, they must be universally unique and resolvable; otherwise the referred geospatial information have to be enclosed in the database and/or communication.