IEEE/ICACT20220156 Slide.28        [Big Slide]       Oral Presentation
To understand the working of algorithm proposed for updating approximation sets when one or more old objects leave the system , we consider a same sample information system used in previous example. We assume that two objects leave the system , {𝒙𝟑,𝒙𝟕}. In the first step, we update decision classes and other relevant higher/lower preference ordered classes upon deletion of an object ¡®𝒙𝟑¡¯ from the system.

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