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In interactive Networked Collaborative Virtual Environment (NCVE), users work in a group to involve in activities such as game, discussion and learning. However, their existence is not visibly presence. Therefore, there is a crucial need to represent the invisible users so that users know with whom they are interacting with, when to communicate and what to do during the collaboration. Most NCVE systems support non-verbal communication cue only to a limited degree causing unnatural communication and degrading communication quality. This leads to miss communication and miss interpretation of information during the collaboration. Research works on identifying this situation have been performed by many researchers that lead to the issues of awareness.
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