In this paper, we propose a conceptual model for building schemata for XML documents. In particular, we define the conceptual model UXS (UML & XML Schema), which is based on UML and provides several graphical constructs to help the programmer to define complex XML schemata. The model is completed by the support of several translation approaches for… (More)
τXSchema  is a framework (a language and a suite of tools) for the creation and validation of time-varying XML documents. A τXSchema schema is composed of a conventional XML Schema document annotated with physical and logical annotations. All components of a τXSchema schema (i.e., conventional schema, logical annotations, and… (More)
The role of the eXtensible Markup Language (XML) is becoming very important in the research fields focusing on the representation, the exchange, and the integration of information coming from different data sources and containing information related to various contexts such as, for example, medical and biological data. Extracting knowledge from XML datasets… (More)
The diffusion of clinical guidelines to describe the proper way to deal with patients' situations is spreading out and opens new issues in the context of modeling and managing (temporal) information about medical activities. Guidelines can be seen as processes describing the sequence of activities to be executed, and thus approaches proposed in the business… (More)
Classification of samples in expression microarray experiments represents a crucial task in bioinformatics and biomedicine. In this paper this scenario is addressed by employing a particular class of statistical approaches, called Topic Models. These models, firstly introduced in the text mining community, permit to extract from a set of objects (typically… (More)
OBJECTIVE In this paper, we extend a preliminary proposal and discuss in a deeper and more formal way an approach to evaluate temporal similarity between clinical workflow cases (i.e., executions of clinical processes). More precisely, we focus on (i) the representation of clinical processes by using a temporal conceptual workflow model; (ii) the definition… (More)
OBJECTIVE In this paper, we focus on the issue of providing physicians with the capability of representing in a seamless way both temporal aspects of multimedia semistructured data and their temporal presentation requirements. BACKGROUND Semistructured data are data having some structure, that may be irregular or incomplete and does not necessarily… (More)
In the last years XML is becoming a standardized means for representing semistructured data, i.e. data having a structure which is not regular and fixed in advance. In this context, documents may have "similar" content but different structure and thus in this work we propose an approximate way to query XML data by means of association rules.