This paper examines several different approaches to exploiting structural information in semi-structured document categorization. The methods under consideration are designed for categorization of documents consisting of a collection of fields, or arbitrary tree-structured documents that can be adequately modeled with such a flat structure. The approaches range from trivial modifications of tex...

In this paper we address the problem of schema evolution in object-oriented database systems. Most currently available database prototypes either completely lack schema evolution facilities, or ooer a restricted set of special purpose schema evolution operators supporting simple schema changes. Our approach is diierent. We consider schema objects as objects like others and have the meta schema ...

We integrate a logic programming language into Meta-S, a flexible and extendable constraint solver cooperation system, by treating resolution as constraint solver. This new approach easily yields a CLP language with support for solver cooperation. Applying the strategy definition framework of Meta-S we define classical search strategies and more sophisticated ones, that allow an efficient evalu...

The article describes an unique production process and an organizational structure for adaptive software development project execution with the use of SPEM profile of UML language. The organization of a company presented in this paper is based on neutral matrix model including elements essential for remote execution of adaptive projects. The presented solution enables to react more quickly to c...

This paper discusses the new property characteristics in the Meta Object Facility 2.0, namely subset and union properties. They are heavily used in the Unified Modeling Language 2.0 standard, but lack a formal definition. We give our understanding of the new characteristics by formalizing subsets and unions using substitutability as our criterion. We present basic operations to create and edit ...

The detailed design of Multi-Agent Systems (MAS) is intended to introduce additional detail for each architectural component of the system according to agent-oriented design patterns. In this paper, we propose a process to perform the detailed design of MAS using UML-based diagrams and social patterns. This process is described in detail using the SPEM notation and is illustrated with the e-New...

Large and complex meta-models such as those of Uml and its profiles are growing due to modelling and inter-operability needs of numerous stakeholders. The complexity of such meta-models has led to coining of the term meta-muddle. Individual users often exercise only a small view of a meta-muddle for tasks ranging from model creation to construction of model transformations. What is the effectiv...

Computer-Supported Collaborative Learning (CSCL) research has become pervasive in STEM education over the last several decades. The research presented here is part of an ongoing project to construct a meta-synthesis of CSCL findings in STEM domains. After a systematic search of the literature and article coding, cluster analysis results provided a frame for sampling from this literature in orde...

This paper proposes a representation for plans and actions based on the algebraic theory of processes . It is argued that the requirements of plan-execution are better met by representing actions through the processes by which changes occur than by the more widely used state-change representation. A simple algebra of plans, based on process-combinators, is described and shown to be adequate for...

This paper presents a new linguistic resource for the study and computational processing of Portuguese. CINTIL DependencyBank PREMIUM is a corpus of Portuguese news text, accurately manually annotated with a wide range of linguistic information (morpho-syntax, named-entities, syntactic function and semantic roles), making it an invaluable resource specially for the development and evaluation of...