Semantic-based RFID Data Management Roberto De Virgilio, Eugenio Di Sciascio, Michele Ruta, Floriano Scioscia, Riccardo Torlone Abstract Traditional Radio-Frequency IDentification (RFID) applications have been focused on replacing bar codes in supply chain management. Leveraging a ubiqui- tous computing architecture, the chapter presents a framework allowing both quick decentralized on-line item discovery and centralized off-line massive business logic analysis, according to needs and requirements of supply chain actors. A semantic- based environment, where tagged objects become resources exposing to an RFID reader not a trivial identification code but a semantic annotation, enables tagged objects to describe themselves on the fly without depending on a centralized in- frastructure. On the other hand, facing on data management issues, a proposal is formulated for an effective off-line multidimensional analysis of huge amounts of RFID data generated and stored along the supply chain. 1 Introduction A supply chain is a complex system composed by organizations and people with their activities involved in transferring a product or service from a supplier to a final customer. The key to make a successful supply chain relies on an extended collaboration, implying the integration among actors involved in the productive and logistic network. An integrated and flexible management of logistics (physical and information flows) has to be set-up both inside and outside factory boundaries. Spe- cialized production and distribution processes suffer from the limited interactions allowed by rigid networks. As a result, nowadays a relevant component of compe- tition in the market occurs among logistical chains. The supply chain can no longer be represented as static or linear, but it needs to be evaluated dynamically, as a com- plex system made of interactions and connections among actors operating along the chain. Many empirical investigations have demonstrated there is a positive correlation between enterprise performances and its propensity and attitude to be integrated into larger systems. This is the reason why enterprises are more and more atten- tive to the opportunity offered by both coordination and cooperation among their Roberto De Virgilio and Riccardo Torlone Universit´ a Roma Tre, Rome, Italy, e-mail: {dvr,torlone}@dia.uniroma3.it Eugenio Di Sciascio, Michele Ruta and Floriano Scioscia Politecnico di Bari, Bari, Italy, e-mail: {disciascio,m.ruta,f.scioscia}@poliba. it 1