1,721,093 research outputs found
Processes Engineering and AOSE
No full textAgent-oriented methodologies like ADELFE, ASPECS, INGENIAS, MaSE, PASSI, Prometheus, SODA, or Tropos propose development formulae with their own specificities. Analyzing them is the responsibility of the Process Engineering discipline, which is currently one hot research line in software engineering. The analysis makes it possible to construct a catalogue of current processes, assessing their utility and enabling their reuse. Additionally, the study may lead to the modification or improvement of existing development processes, perhaps combining fragments from solutions coming from the different methodologies.
In this paper, we first provide a general view over the area of Software Process Engineering (SPE), then focus on the most recent developments of SPE in the Agent-Oriented Software Engineering (AOSE) field
Middleware Infrastructures for Self-organising Pervasive Computing Systems
No full textIn this chapter, we focus on the need for innovative open pervasive middleware infrastructures to support self-organisation, self-adaptation and evolvability, in distributed applications, with a particular attention to pervasive computing scenarios. We discuss how such middleware infrastructures should be at the basis of a nature-inspired architectural approach to system design, enabling the modelling and the deployment of services as autonomous individuals in an ecosystem of other services, data sources, and pervasive devices interacting with one another. A reference conceptual architecture is presented to clarify the concepts expressed and the role of middleware within it, and several possible approaches to realise the idea are surveyed and critically analysed, also with the help of a simple case study. Two concrete examples of middleware infrastructures—namely the TOTA (Tuples On The Air) middleware supporting a physically-inspired computing model and the TuCSoN (Tuple Centres over the Network) middleware supporting a chemical-inspired one—are detailed along with examples showing how to use such infrastructures
Gradient-based Self-organisation Patterns of Anticipative Adaptation
No full textThe self-organisation Gradient pattern is known to be a key spatial data structure to make information local to its source become global knowledge, and to dynamically and adaptively steer agents to that source even in mobile and faulty environments – e.g. when obstacles unpredictably appear. In this paper we conceive new self-organisation mechanisms built upon this pattern to tackle anticipative adaptation. We ensure that the retrieval of a target of interest proactively reacts to locally-available information about future events, namely, the knowledge about future obstacles (e.g., expected jams or road interruption in a traffic control scenario) is used to emergently compute alternative and faster paths
Security protocols verification in abductive logic programming: a case study
No full textIn this paper we present by a case study an approach to the verification of security protocols based on Abductive Logic Programming. We start from the perspective of open multi-agent systems, where the internal architecture of the individual system's components may not be completely specified, but it is important to infer and prove properties about the overall system behaviour. We take a formal approach based on Computational Logic, to address verification at two orthogonal levels: `static' verification of protocol properties (which can guarantee, at design time, that some properties are a logical consequence of the protocol), and `dynamic' verification of compliance of agent communication (which checks, at runtime, that the agents do actually follow the protocol). We adopt as a running example the well-known Needham-Schroeder protocol. We first show how the protocol can be specified in our previously developed SOCS-SI framework, and then demonstrate the two types of verification
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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