1,721,063 research outputs found
KD2R : a Key Discovery method for semantic Reference Reconciliation in OWL
No full textΟ κύριος άξονας του προβλήματος της συμφιλίωσης αναφορών είναι η ικανότητα ανίχνευσης ότι δυο διαφορετικά αναγνωριστικά αναφέρονται στην ίδια οντότητα. Ορισμένες μέθοδοι που προσπαθούν να λύσουν το πρόβλημα αυτό χρησιμοποιούν κλειδιά για να πάρουν αυτές τις αποφάσεις συμφιλίωσης. Στο πλαίσιο του Linked Open Data τέτοιου είδους πληροφορίες δεν είναι διαθέσιμες. Σε αυτήν την μεταπτυχιακή εργασία προτείνουμε την μέθοδο KD2R, μια μέθοδο που επιτρέπει την αυτόματη ανίχνευση κλειδιών συσχετιζόμενα με OWL2 κλάσεις. Αυτά τα κλειδιά ανιχνεύονται σε RDF αρχεία που μπορεί να είναι ημιτελή. Ο προτεινόμενος αλγόριθμος επιτρέπει την εύρεση κλειδιών χωρίς να είναι απαραίτητη η σάρωση όλων των δεδομένων. Η μέθοδος KD2R έχει δοκιμαστεί σε δεδομένα απο τον διεθνή διαγωνισμό ΟΑΕΙ και τα αποτελέσματα του είναι πολλά υποσχόμενα.The reference reconciliation problem consists of deciding whether different identifiers refer to the same world entity. Some existing reference reconciliation approaches use key constraints to infer reconciliation decisions. In the context of the Linked Open Data, this knowledge is not available. In this master thesis we propose KD2R, a method which allows automatic discovery of key constraints associated to OWL2 classes. These keys are discovered from RDF data which can be incomplete. The proposed algorithm allows this discovery without having to scan all the data. KD2R has been tested on data sets of the international contest OAEI and obtains promising results
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
A visual analytics technique for exploring gene expression in the developing mouse embryo
Get PDFThis paper describes a novel visual analytics technique for exploring gene co-expression is the developing mouse embryo. The majority of existing techniques either visualise a single gene profile or a single tissue profile, whereas the technique presented here combines both - visualising gene co-expression in a group of tissues, for example, in the components of the developing heart. The technique is presented using data provided by the Edinburgh Mouse Atlas Project of gene expression assays conducted on tissues of the developing mouse embryo and a corresponding hierarchical graph of tissues defining the mouse anatomy. By specifying a particular tissue, such as the heart, and a particular stage of development, a Formal Concept Lattice is constructed making use of the hierarchical mouse anatomy to visualise the components of the specified tissue and the genes expressed in each component. Examples of lattices are given to illustrate the technique and show how it can provide useful information to genetic researchers of embryo development and tissue differentiation, particularly when comparing gene expression across several stages of development
Using conceptual structures in enterprise architecture to develop a new way of thinking and working for organisations
Get PDFEnterprise Architecture (EA) is a discipline that provides generic patterns that any organisation can reuse
throughout its own business, informatics and technical components. However, EA’s current way of
thinking and working to achieve this aim is not standardised. EA thus continues to “reinvent the wheel”
that causes mistakes or wastes resources on rediscovering what should already be known. We, therefore,
represent the specific business, information and technology meta-models as patterns that can be fully
reintegrated in one repeatable meta-model for the whole organisation. The outcome is a new agile way of
thinking and working, highlighted by how EA works better in enterprise layers, sub-layers and levels of
abstraction. To test the meta-models, two forms of Conceptual Structures known as Conceptual Graphs
(CGs) and Formal Concept Analysis (FCA) are brought together through the CGtoFCA algorithm. The
algorithm identifies how the layered meta-models can share meaning and truth and without having to
recombine them into one large, unwieldy meta-model as the repeatable structure
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