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This paper advances a formal approach about how to encode cognitive relevance into the design of interfaces of multimodal systems, with a focus on the automatic multimedia generation systems. We make a proposal that the optimality of the encoding of cognitive relevance depends on a proper formalization of the processes of modality allocation and modality combination. We describe how this can be done by adopting and encoding the Principle of Relevance based modality combination which evolved out of our formal analysis of modality allocations and modality combinations.

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Social media and social networks have gained an unprecedented role in connecting people, knowledge, and experiences. Game industry is using the power of social networks by creating Social Network Games, which can be even more engaging than traditional games. In this chapter, the main characteristics of Social Network Games and their potential are discussed. This potentiality can also be used for serious games (i.e. games with purposes beyond entertainment) and especially games related to learning and behavioural changes. This leads to introducing the emerging field of Serious Social Network Games and their unique characteristics that make them suitable for serious applications. Finally, the rising phenomenon of Social TV is discussed, which combines the power of TV and social media. Based on a project by the authors, preliminary findings on the most engaging techniques of Social TV Games are presented, together with initial suggestions on what constitutes good game mechanics for such games. The chapter concludes with future research directions for Social Network Games to become even more engaging and effective for purposes beyond pure entertainment.

Social media and social networks have gained an unprecedented role in connecting people, knowledge, and experiences. Game industry is using the power of social networks by creating Social Network Games, which can be even more engaging than traditional games. In this chapter, the main characteristics of Social Network Games and their potential are discussed. This potentiality can also be used for serious games (i.e. games with purposes beyond entertainment) and especially games related to learning and behavioural changes. This leads to introducing the emerging field of Serious Social Network Games and their unique characteristics that make them suitable for serious applications. Finally, the rising phenomenon of Social TV is discussed, which combines the power of TV and social media. Based on a project by the authors, preliminary findings on the most engaging techniques of Social TV Games are presented, together with initial suggestions on what constitutes good game mechanics for such games. The chapter concludes with future research directions for Social Network Games to become even more engaging and effective for purposes beyond pure entertainment.