Letizia Tanca

Publications (165) View all

• Source

  Available from: Fabio A. Schreiber

  Conference Proceeding: Green Move: towards next generation sustainable smartphone-based vehicle sharing

  G Alli, L Baresi, A Bianchessi, G Cugola, A Margara, A Morzenti, C Ongini, E Panigati, M Rossi, S Rotondi, S Savaresi, F Schreiber, A Sivieri, L Tanca, E Vannutelli Depoli
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  ABSTRACT: This paper presents the Green Move project, which is currently ongoing at Politecnico di Milano. The goal of Green Move is to create an innovative vehicle sharing system, based on electric vehicles, which can easily be accessed by users with little required infrastructure and few intermediaries. The paper provides an overview of the project, briefly describes the architecture of the system under development, and outlines the next steps in this research.
  2nd IFIP Conference on Sustainable Internet and ICT for Sustainability, Pisa, Italy; 10/2012
• Source

  Available from: Fabio A. Schreiber

  Article: Towards autonomic pervasive systems: the PerLa context language

  F A Schreiber, L Tanca, R Camplani, D Viganò, Fabio A Schreiber, Letizia Tanca, Romolo Camplani, Diego Viganó
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  ABSTRACT: The property of context-awareness, inherent to a Pervasive System, requires a clear definition of context and of how the context parameter values must be extracted from the real world. Since often the same variables are common to the operational system and to the context it operates into, the usage of the same language to manage both the application and the context can lead to substantial savings in application development time and costs. In this paper we propose a context-management extension to the PerLa language and middleware that allows for declarative gathering of context data from the environment, feeding this data to the internal context model and, once a context is active, acting on the relevant resources of the pervasive system, according to the chosen contextual policy.
  07/2011;
• Source

  Available from: Fabio A. Schreiber

  Article: Context information for knowledge reshaping

  C Bolchini, C A Curino, E Quintarelli, F A Schreiber, L Tanca
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  ABSTRACT: More and more often, we face the necessity of extracting appropriately reshaped knowledge from an integrated representation of the information space. Be such a global representation a central database, a global view of several ones or an ontological representation of an information domain, we face the need to define personalised views for the knowledge stakeholders: single users, companies or applications. We propose exploiting the information usage context within a methodology for context-aware data design, where the notion of context is formally defined together with its role within the process of view building by information tailoring. This paper presents our context model, called the context dimension tree, which plays a fundamental role in tailoring the information space according to user information needs.
  Int. J. Web Engineering and Technology. 01/2009; 5.
• Source

  Available from: Letizia Tanca

  Conference Proceeding: X-SOM: A Flexible Ontology Mapper

  C. Curino, G. Orsi, L. Tanca
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  ABSTRACT: System interoperability is a well known issue, especially for heterogeneous information systems, where ontology- based representations may support automatic and user- transparent integration. In this paper we present X-SOM: an ontology mapping and integration tool. The contribution of our tool is a modular and extensible architecture that automatically combines several matching techniques by means of a neural network, performing also ontology debugging to avoid inconsistencies. Besides describing the tool components, we discuss the prototype implementation, which has been tested against the OAEI 2006 benchmark with promising results.
  Database and Expert Systems Applications, 2007. DEXA '07. 18th International Workshop on; 10/2007
• Conference Proceeding: Towards a definition of an Image Ontology

  A. Penta, A. Picariello, L. Tanca
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  ABSTRACT: Archiving, organizing, and searching multimedia data in an appropriate fashion is a task of increasing importance. The ontology theory may be appropriately extended in order to face this challenging issue. In this paper we propose an extension of an Image Database model based on NF2 with an Ontology model. We first describe NF2 and the main concepts of Image Ontologies, then we propose a general architecture for supporting creation and management of multimedia objects.
  Database and Expert Systems Applications, 2007. DEXA '07. 18th International Workshop on; 10/2007