Propagation of Belief Functions through Frames of Discernment: Application to
نویسندگان
چکیده
In smart homes, many context attributes, i.e. small pieces of context, have to be computed from sensors in order to provide adapted services. We observe that many of those context attributes can be deduced from others. This paper presents how methods to propagate belief functions from one frame of discernment to another can be used to compute contexts. It enables the creation of evidential networks, preventing from recomputing many times the same evidence and enabling the construction of higher levels of abstraction often difficult to obtain directly from sensors. The proposed method is based on an intuitive way of thinking evidential networks considering mappings between frames of discernment. An example where this method is essential is presented.
منابع مشابه
Belief Calculus
In Dempster-Shafer belief theory, general beliefs are expressed as belief mass distribution functions over frames of discernment. In Subjective Logic beliefs are expressed as belief mass distribution functions over binary frames of discernment. Belief representations in Subjective Logic, which are called opinions, also contain a base rate parameter which express the a priori belief in the absen...
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