1,721,046 research outputs found
High-level visualization over big linked data
Full text linkThe Linked Open Data (LOD) Cloud is continuously expanding and the number of complex and large sources is raising. Understanding at a glance an unknown source is a critical task for LOD users but it can be facilitated by visualization or exploration tools. H-BOLD (High-level visualization over Big Open Linked Data) is a tool that allows users with no a-priori knowledge on the domain nor SPARQL skills to start navigating and exploring Big Linked Data. Users can start from a high-level visualization and then focus on an element of interest to incrementally explore the source, as well as perform a visual query on certain classes of interest. At the moment, 32 Big Linked Data (with more than 500.000 triples) exposing a SPARQL endpoint can be explored by using H-BOLD
Automatic Lexical Annotation Applied to the SCARLET Ontology Matcher (Extended Abstract)
No full textThis paper proposes lexical annotation as an effective method to solve the ambiguity problems that affect ontology matchers. Lexical annotation associates to each ontology element a set of meanings belonging to a semantic resource. Performing lexical annotation on the ontologies involved in the matching process allows to detect false positive mappings and to enrich matching results by adding new mappings (i.e. lexical relationships between elements on the basis of the semantic relationships holding among meanings).The paper will go through the explanation of how to apply lexical annotation on a matcher. In particular, we show an application on the SCARLET matcher.Experiments yielded promising results, showing that lexical annotation improves the precision of the matcher
Improving Data Integration through Disambiguation Techniques
No full textIn this paper Word Sense Disambiguation (WSD) issue in the context of data integration is outlined and an Approximate Word Sense Disambiguation approach (AWSD) is proposed for the automatic lexical annotation of structured and semi-structured data sources
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
An iPad Order Management System for Fashion Trade
No full textThe fashion industry loves the new tablets. In 2011 we noted a 38% growth of e-commerce in the italian fashion industry. A large number of brands have understood the value of mobile devices as the key channel for consumer communication. The interest of brands in applications of mobile marketing and services have made a big step forward, with an increase of 129% in 2011 (osservatori.net, 2012). This paper presents a mobile version of the Fashion OMS (Order Management System) web application. Fashion Touch is a mobile application that allows clients and company’s sales networks to process commercial orders, consult the product catalog and manage customers as the OMS web version does with the added functionality of the off-line order entering mode. To develop an effective mobile App, we started by analyzing the new web technologies for mobile applications (HTML5, CSS3, Ajax) and their relative development frameworks making a comparison with the Apple’s native programming language. We selected Titanium, a multi-platform framework for native mobile and desktop devices application development via web technologies as the best framework for our purpose. We faced issues concerning the network synchronization and studied different database solutions depending on the device hardware characteristics and performances. This paper reports every aspect of the App development until the publication on the Apple Store
LODeX: A visualization tool for Linked Open Data navigation and querying.
No full textWe present LODeX, a tool for visualizing, browsing and querying a LOD source starting from the URL of its SPARQL endpoint. LODeX creates a visual summary for a LOD dataset and allows users to perfor queries on it. Users can select the classes of interest for discovering which instances are stored in the LOD source without any knowledge of the underlying vocabulary used for describing data. The tool couples the overall view of the LOD source with the preview of the instances so that the user can easily build and refine his/her query.
The tool has been evaluated on hundreds of public SPARQL endpoints (listed in Data Hub). The schema summaries of 40 LOD sources are stored and available for online querying at http://dbgroup.unimo.it/lodex2
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