Situation Awareness: Dealing with Vague Context

Abstract

Situation awareness is considered as an approach to model user context in ubiquitous information services. Such services can intelligently infer knowledge about user situation. Moreover, situational reasoning is attained taking into consideration similarity-based approaches. This paper proposes approximate decision-making about situational similarity using conceptual modelling, ontological representation, and, fuzzy logic inference.

Adding contextual information to Intrusion Detection Systems using Fuzzy Cognitive Maps

“…Ontologies have proven to be powerful tools to specify and structure knowledge, to model behaviours schematically, or to provide formal specification of different entities in a system and their relationships. Other researchers [2,8,9] have used ontologies to represent contextual information. For instance, in [9], the authors tackle the problem of adding contextual information in the smart car domain.…”

“…They propose a hierarchical model that defines a number of known situations using ontologies. In [8], the authors model contextual information using interrelated concepts of diverse ontologies. The authors of [2] propose a security ontologies-based approach to add context information into a process that fuses the outcome of heterogeneous distributed IDSs.…”

“…The events C 4-7 define four throughput levels that are considered normal when one of the services is running. The four events C [8][9][10][11] define the periods of time at which the different services are scheduled. Both C 12 and C 13 are the two possible outcome decisions about each state.…”

Complex situation modeling in distributed sensor networks

“…Context-aware decision making may be defined as inference process based on a combination of current information about the environment and prior knowledge about the environment in order to arrive at tangible conclusions. It is an iterative process of assessing the contextual and logical relationships between various objects to arrive at an abstracted description of the current situation [3]. It can therefore be regarded as a multilevel hierarchical pattern recognition problem leading to high level knowledge about the environment, which can be directly used in action planning.…”

A Situation-Based Delivery of Learning Resources in Pervasive Learning

“…In CoBra [4], an agent-oriented infrastructure for context representation is presented. In relation to situation, the authors in [1,8,16] proposed context modeling through ontology based situation-aware. Krisch and al.…”