1,721,056 research outputs found
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
25 Years of Applications of Logic Programming in Italy
No full textWe present a review of practical applications of Logic Programming appeared in Italy since 1985. We classify them according to their area of application and discuss some trends emerged in the latest developments. Notwithstanding this survey is far to be comprehensive, it shows that Logic Programming successfully evolved and quickly adapted to new challenges offered by a notable variety of application areas
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
Formal Properties of the SCIFF-AF Multiagent Argumentation Framework
No full textArgumentation theories have recently emerged and gained popularity in the agents community, since argumentation represents a natural and intuitive way to model non-monotonic reasoning. In a multi-agent context, argumentation has recently been proposed as a component of dialogue frameworks. However, despite the large interest in argumentation theories in multiagent domains, most proposed frameworks stay at a general though abstract level, and operational counterparts to abstract frameworks are not many. The aim of this work is to present the main formal properties of the SCIFF-AF: an operational argumentation-based multiagent dialogue framework
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
On the integration of declarative choreographies and Commitment-based agent societies into the SCIFF logic programming framework
No full textThe definition of choreography specification languages for Service Oriented Systems poses important challenges. Mainstream approaches tend to focus on procedural aspects, leading to over-constrained and over-specified models. Because of such a drawback, declarative languages are gaining popularity as a better way to model service choreographies. A similar issue was met in the Multi-Agent Systems domain, where declarative approaches based on social semantics have been used to capture the nature of agent interaction without over-constraining their behaviour.
In this work, we present an integrated framework capable to cover the entire cycle of specification and verification of choreographies, by mixing approaches coming from the Service Oriented Computing and Multi-Agent Systems research domains. SCIFF is the underlying logic programming framework for modelling and verifying interaction in open systems. The use of SCIFF brings us two main advantages: (1) it allows us to capture within a single framework different aspects of a choreography, ranging from constraints on the flow of messages to effects and commitments resulting from their exchange; (2) it provides an operational model that can be exploited to perform a variety of verification tasks
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