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Handbook of Multimedia for Digital Entertainment and Arts- P12

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Handbook of Multimedia for Digital Entertainment and Arts- P12: The advances in computer entertainment, multi-player and online games, technology-enabled art, culture and performance have created a new form of entertainment and art, which attracts and absorbs their participants. The fantastic success of this new field has influenced the development of the new digital entertainment industry and related products and services, which has impacted every aspect of our lives. | 322 M. Furini and M. Montangero two other policies the revenue of a customer depends on the number of customers that receive the song directly and indirectly from him her. Thus the way in which the song spreads among customers greatly influences their revenue e.g. a customer might have a big income with little effort if the customers to whom the song is delivered put a lot of effort in reselling the song customers might get an unexpected reward also after a long period of time from the moment he she sold the song. The proportional reward policy produces better results than the equal distribution as a customer needs a smaller number of customers in its subtree even if to get a full refund of Cj the minimum number of customers is reasonable in both cases. Moreover although we analyzed the worst-case scenario this is unlikely to happen in reality especially if we think that music is distributed according to social relationships. Hence with a multi-channel distribution strategy in average even a smaller number of customers has to be reached and it is likely that many customers the higher they are in the tree the better might have a revenue grater than Cj. From the store point of view the choice of the policy depends on which among the customers the store wants to favor the selfish policy favors the ones that buy from the store the equal favors the customers that join the music distribution earlier the proportional favors the customers that actually distribute the song. Related Work Content distribution in a mobile environment is a subject investigated in recent literature some are experiencing the development of ad-hoc P2P networks in a mobile environment 13 14 others are proposing to disseminate contents in Wi-Fi based ad-hoc networks through epidemic algorithms 18 29 . The multi-channel distribution outlined in this paper does not require a real P2P network as the song delivery simply requires the cooperation of two customers making the operation more similar to what