1,720,957 research outputs found
Social and Semantic Contexts in Tourist Mobile Applications
Get PDFThe ongoing growth of the World Wide Web along with the increase possibility of access information through a variety of devices in mobility, has defi nitely changed the way users acquire, create, and personalize information, pushing innovative strategies for annotating and organizing it.
In this scenario, Social Annotation Systems have quickly gained a huge popularity, introducing millions of metadata on di fferent Web resources following a bottom-up approach, generating free and democratic mechanisms of classi cation, namely folksonomies. Moving away from hierarchical classi cation schemas, folksonomies represent also a meaningful mean for identifying similarities among users, resources and tags. At any rate, they suff er from several limitations, such as the lack of specialized tools devoted to manage, modify, customize and visualize them as well as the lack of an explicit semantic, making di fficult for users to bene fit from them eff ectively. Despite appealing promises of Semantic Web technologies, which were intended to explicitly formalize the knowledge within a particular domain in a top-down manner, in order to perform intelligent integration and reasoning on it, they are still far from reach their objectives, due to di fficulties in knowledge acquisition and annotation bottleneck.
The main contribution of this dissertation consists in modeling a novel conceptual framework that exploits both social and semantic contextual dimensions, focusing on the domain of tourism and cultural heritage. The primary aim of our assessment is to evaluate the overall user satisfaction and the perceived quality in use thanks to two concrete case studies. Firstly, we concentrate our attention on contextual information and navigation, and on authoring tool; secondly, we provide a semantic mapping of tags of the system folksonomy, contrasted and compared to the expert users' classi cation, allowing a bridge between social and semantic knowledge according to its constantly mutual growth.
The performed user evaluations analyses results are promising, reporting a high level of agreement on the perceived quality in use of both the applications and of the speci c analyzed features, demonstrating that a social-semantic contextual model improves the general users' satisfactio
Visualizing and Managing Folksonomies
No full textSocial tagging represents an innovative and powerful mechanism introduced by social Web: it shifts the task of classifying resources from a reduced set of knowledge engineers to the wide set of Web users.
Tags generate folksonomies; in the current popular social tagging systems (such as delicious or Bibsonomy), they are difficult to manage, modify, and visualize in dynamic and personalized ways.
The aim of this paper is to describe Folkview, an innovative way to conceive a folksonomy in terms of a multi-agent system. Folkview is able to support specific modular tools for personalizing customized and dynamic visualization features allowing users to simply update, manage and modify a folksonomy
Folkview: a Multi-Agent System Approach to Modeling Folksonomies.
No full textFolksonomies contain semantic information on data, and represent a meaningful mean for identifying similarities among users, resources and tags. Their strong potential is often reduced by the lack in social tagging systems of specialized functionalities for managing and modifying them, and of specific tools for generating customized and dynamic views on them. The aim of this paper is to present Folkview, an innovative way to conceive a folksonomy in terms of a multi-agent system. Each element (tag, user, resource) become an active entity and the folksonomy transforms itself from a traditional passive container of data into a computational agent, provided of a set of procedural and distributed skills. The agents actively collaborate in order to generate dynamic and customized views and supporting users in the updating, managing and modifying her personomy, and the same folksonomy
Contextual Navigation and Authoring in a Museum Mobile Guide
No full textTOGO is a tourist mobile guide dedicated TO the town of GOrizia; it proposes the study of a general model for a museum mobile guide and an application prototype related to Palazzo Coronini Crönberg, the residence of the last count of Gorizia, now museum. This paper focuses on two main open issues: the innovative contribute offered by a contextual navigation based on semantic interconnections and the importance to create personal work-spaces for the users, enabling them to author new tourist paths. In order to capture semantic interconnections among data, we use advanced data structures called zz-structures, a graph-centric system of conventions for data and computing, able to offer semantic modalities of navigation
TOGO: a Contextual Tourist Mobile Guide
No full textIn this paper, we present TOGO, a general model and a limited prototype of a contextual tourist mobile guide dedicated TO the city of GOrizia. Our goal is twofold: first, we offer contextual views to the users, and, second, we provide them with a personal workspace in which they can also create new, personalized paths. In order to capture semantic interconnections among data, we use advanced data structures called zz-structures, a graph-centric system of conventions for data and computing, able to simply offer semantic modalities of navigation
Information Retrieval and Folksonomies together for Recommender Systems
No full textThe powerful and democratic activity of social tagging allows the wide set of Web users to add free annotations on resources. Tags express user interests, preferences and needs, but also automatically generate folksonomies. They can be considered as gold mine, especially for e-commerce applications, in order to provide effective recommendations. Thus, several recommender systems exploit folksonomies in this context. Folksonomies have also been involved in many information retrieval approaches. In considering that information retrieval and recommender systems are siblings, we notice that few works deal with the integration of their approaches, concepts and techniques to improve recommendation. This paper is a first attempt in this direction. We propose a trail through recommender systems, social Web, e-commerce and social commerce, tags and information retrieval: an overview on the methodologies, and a survey on folksonomy-based information retrieval from recommender systems point of view, delineating a set of open and new perspectives
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
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