Inference is the process of forming conclusions from premises. The inferred knowledge is harmful when the user is not authorized to acquire such information from legitimate responses that he/she receives. Providing a solution to the inference problem where users issue multiple requests and consequently infer unauthorized knowledge is an open problem. An inference controller is a device that is used to detect or prevent the occurrence of the inference problem. However, an inference controller will never know in full the inferences possible from the answers to a query request since there is always some prior knowledge available to the querying user. This prior ...
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