1,721,066 research outputs found
Automated support for diagnosis and repair
Full text linkModel checking and logic-based learning together deliver automated support, especially in adaptive and autonomous systems.Fil: Alrajeh, Dalal . Imperial College London; Reino UnidoFil: Russo, Alessandra. Imperial College London; Reino UnidoFil: Kramer, Jeff . Imperial College London; Reino UnidoFil: Uchitel, Sebastian. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Computación; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
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Responsible Software Engineering: Requirements and Goals
Full text linkIn this chapter, we provide an introduction to the discipline of requirements engineering as part of the software engineering process. We indicate how to elicit, articulate, and organize the goals of complex software systems as an explicit expression of the requirements that the proposed or existing software system is expected to achieve and maintain, including what the system should avoid performing. We advocate that system requirements goals can and should be used to explicitly capture, express, and reason about the diverse digital humanism values which are of concern in socio-technical systems. This is an essential aspect of responsible software engineering
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
Synthesizing Concurrency Control Components from Process Algebraic Specifications
Full text linkProcess algebraic specifications can provide useful support for the architectural design of software systems due to the possibility of analyzing their properties. In addition to that, such specifications can be exploited to guide the generation of code. What is needed at this level is a general methodology that accompanies the translation process, which in particular should help understanding whether and when it is more appropriate to implement a software component as a thread or as a monitor. The objective of this paper is to develop a systematic approach to the synthesis of correctly coordinating monitors from arbitrary process algebraic specifications that satisfy some suitable constraints. The whole approach will be illustrated by means of the process algebraic specification of a cruise control system
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
Using contexts to extract models from code
Full text linkBehaviour models facilitate the understanding and analysis of software systems by providing an abstract view of their behaviours and also by enabling the use of validation and verification techniques to detect errors. However, depending on the size and complexity of these systems, constructing models may not be a trivial task, even for experienced developers. Model extraction techniques can automatically obtain models from existing code, thus reducing the effort and expertise required of engineers and helping avoid errors often present in manually constructed models. Existing approaches for model extraction often fail to produce faithful models, either because they only consider static information, which may include infeasible behaviours, or because they are based only on dynamic information, thus relying on observed executions, which usually results in incomplete models. This paper describes a model extraction approach based on the concept of contexts, which are abstractions of concrete states of a program, combining static and dynamic information. Contexts merge some of the advantages of using either type of information and, by their combination, can overcome some of their problems. The approach is partially implemented by a tool called LTS Extractor, which translates information collected from execution traces produced by instrumented Java code to labelled transition systems (LTS), which can be analysed in an existing verification tool. Results from case studies are presented and discussed, showing that, considering a certain level of abstraction and a set of execution traces, the produced models are correct descriptions of the programs from which they were extracted. Thus, they can be used for a variety of analyses, such as program understanding, validation, verification, and evolution.Fil: Duarte, Lucio Mauro. Federal University of Rio Grande do Sul; BrasilFil: Kramer, Jeff. Imperial College London; Reino UnidoFil: Uchitel, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Imperial College London; Reino Unid
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