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HeaRTDroid is a rule-based inference engine both for Android mobile devices, and desktop solutions

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pub:software:heartdroid:tutorials:uncertainty_cf

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pub:software:heartdroid:tutorials:uncertainty_cf [2017/01/04 13:35]
admin [Use case]
pub:software:heartdroid:tutorials:uncertainty_cf [2019/04/10 08:54] (current)
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-The certainty factors (CF) in XTT2 models can be assigned to the attributes'​ values, to rules conditions, and to the rules directly. ​+The certainty factors (CF) in XTT2 models can be assigned ​to three different elements: 
 +  - to the attributes'​ values ​-- this is usually done when the value is obtained from context-provier (sensoruser, etc.). This represents the confidence the value is correct. 
 +  - to rules conditions ​-- this is evaluated based on the CF of the attribute'​s value from the condition. The complete set of rules for how to evaluate the CF of conditional formula is given in: //Bobek S.Nalepa G. (2016). [[http://​dx.doi.org/​10.1016/​j.pmcj.2016.09.004|Uncertainty handling in rule-based mobile context-aware systems]], Pervasive ​and Mobile Computing//​ 
 +  - to the rules directly ​-- this assignment is done by the knowledge engineer or machine learning methods. It represents the confidence of the rule itself being correct. 
 + 
 You can see, that for instance table ''​transportationModeA''​ has rules which CF are lower than 1. You can see, that for instance table ''​transportationModeA''​ has rules which CF are lower than 1.
 It means that the rules themselves are not completely certain ​ and the resulting confidence of the conclusion they produce is not certain as well. It means that the rules themselves are not completely certain ​ and the resulting confidence of the conclusion they produce is not certain as well.
pub/software/heartdroid/tutorials/uncertainty_cf.txt · Last modified: 2019/04/10 08:54 (external edit)