Identifying experts and authoritative documents in social bookmarking systems

Social bookmarking systems allow people to create pointers to Web resources in a shared, Web-based environment. These services allow users to add free-text labels, or “tags”, to their bookmarks as a way to organize resources for later recall. Ease-of-use, low cognitive barriers, and a lack of controlled vocabulary have allowed social bookmaking systems to grow exponentially over time. However, these same characteristics also raise concerns. Tags lack the formality of traditional classificatory metadata and suffer from the same vocabulary problems as full-text search engines. It is unclear how many valuable resources are untagged or tagged with noisy, irrelevant tags. With few restrictions to entry, annotation spamming adds noise to public social bookmarking systems. Furthermore, many algorithms for discovering semantic relations among tags do not scale to the Web. Recognizing these problems, we develop a novel graph-based Expert and Authoritative Resource Location (EARL) algorithm to find the most authoritative documents and expert users on a given topic in a social bookmarking system. In EARL’s first phase, we reduce noise in a Delicious dataset by isolating a smaller sub-network of “candidate experts”, users whose tagging behavior shows potential domain and classification expertise. In the second phase, a HITS-based graph analysis is performed on the candidate experts’ data to rank the top experts and authoritative documents by topic. To identify topics of interest in Delicious, we develop a distributed method to find subsets of frequently co-occurring tags shared by many candidate experts. We evaluated EARL’s ability to locate authoritative resources and domain experts in Delicious by conducting two independent experiments. The first experiment relies on human judges’ n-point scale ratings of resources suggested by three graph-based algorithms and Google. The second experiment evaluated the proposed approach’s ability to identify classification expertise through human judges’ n-point scale ratings of classification terms versus expert-generated data

ABSTRACTS OF POSTERS

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Metadata enrichment for digital heritage: users as co-creators

This paper espouses the concept of metadata enrichment through an expert and user-focused approach to metadata creation and management. To this end, it is argued the Web 2.0 paradigm enables users to be proactive metadata creators. As Shirky (2008, p.47) argues Web 2.0’s social tools enable “action by loosely structured groups, operating without managerial direction and outside the profit motive”. Lagoze (2010, p. 37) advises, “the participatory nature of Web 2.0 should not be dismissed as just a popular phenomenon [or fad]”. Carletti (2016) proposes a participatory digital cultural heritage approach where Web 2.0 approaches such as crowdsourcing can be sued to enrich digital cultural objects. It is argued that “heritage crowdsourcing, community-centred projects or other forms of public participation”. On the other hand, the new collaborative approaches of Web 2.0 neither negate nor replace contemporary standards-based metadata approaches. Hence, this paper proposes a mixed metadata approach where user created metadata augments expert-created metadata and vice versa. The metadata creation process no longer remains to be the sole prerogative of the metadata expert. The Web 2.0 collaborative environment would now allow users to participate in both adding and re-using metadata. The case of expert-created (standards-based, top-down) and user-generated metadata (socially-constructed, bottom-up) approach to metadata are complementary rather than mutually-exclusive. The two approaches are often mistakenly considered as dichotomies, albeit incorrectly (Gruber, 2007; Wright, 2007) . This paper espouses the importance of enriching digital information objects with descriptions pertaining the about-ness of information objects. Such richness and diversity of description, it is argued, could chiefly be achieved by involving users in the metadata creation process. This paper presents the importance of the paradigm of metadata enriching and metadata filtering for the cultural heritage domain. Metadata enriching states that a priori metadata that is instantiated and granularly structured by metadata experts is continually enriched through socially-constructed (post-hoc) metadata, whereby users are pro-actively engaged in co-creating metadata. The principle also states that metadata that is enriched is also contextually and semantically linked and openly accessible. In addition, metadata filtering states that metadata resulting from implementing the principle of enriching should be displayed for users in line with their needs and convenience. In both enriching and filtering, users should be considered as prosumers, resulting in what is called collective metadata intelligence

The Social Web As Marketplace: A Primer In Social Media Marketing

Information and Communication Technologies and the Internet are already integral elements of the marketing landscape; they are fundamentally transforming the market dynamics adding new dimensions to the marketing strategy. The rapid public adoption of a new generation of online applications known as Social Media (or Web 2.0) has resulted in a new breed of powerful, sophisticated, empowered customers increasingly challenging the corporate message and claiming control over the marketing process. The latest wave of customer empowerment has raised new doubts about the effectiveness of traditional marketing tools and mass media approaches. In reaction to the ominous loss of market control many businesses are rushing to integrate the Social Media into their marketing strategy, often without sufficient knowledge and experience. Understanding the essentials and effects of the Social Media Marketing can help corporate strategists to make sense of a marketplace where the customer is the dominant party. The article discusses the nature of the Social Media as the current stage of the Internet evolution, explains their effect on customer behavior, positions the Social Media Marketing as part of the marketing program and identifies the principal ways to use the Social Media applications as part of the marketing toolbox. Learning to use these applications properly opens to the 21st Century marketer the door to a collection of new marketing tools and new ways of listening to, informing, interacting, acquiring and retaining the new empowered consumer

Remediation by Design: New Linguistic Domains for Changing Organizational Practices

The paper examines the impact of novel linguistic vocabularies on the remediation of practices using computer-reliant media. As linguistic vocabularies we consider social Web services (with certain material agency) allowing recurrent engagement of users in designated communication acts. On the other hand, remediation is conceived as an evolving state of affairs where new practices (as defined by computer-mediated linguistic conventions) are improvised on the basis of old practices that work differently in new technological settings. In this vein, remediation of organizational routines takes place when established human activities are retooled using digital materials to convey new possibilities for action. The paper advances a proposition and a scaffold for remediating by design which is then ‘tested’ by reflecting upon an empirical case

An ontology-based expert locator system in a Web 2.0-oriented personal learning environment

The Artificial Intelligence Workshops (AIW) 2011 are held in conjunction the 3rd Malaysian Joint Conference on Artificial Intelligence (MJCAI 2011), and the 3rd Semantic Technology And Knowledge Engineering Conference (STAKE 2011) at UNITEN Putrajaya Campus, Malaysia.2011-2012 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Foundations of Social Media Marketing

The Social Media have changed the power structures in the marketplace; evidence points to a major power migration taking place and to emergence of a new breed of powerful and sophisticated customer, difficult to influence, persuade and retain The paper outlines the nature, effects and present status of the Social Media, underlying their role as customer empowerment agents. It explains their aptitude and possible roles as part of the corporate Marketing strategy and identifies different ways of engaging them as marketing tools. The paper proposes two possible Social Media marketing strategies: a. The passive approach focusing on utilizing the Social Media domain as source of customer voice and market intelligence. b. The active approach i.e. engaging the Social Media as direct marketing and PR channels, as channels of customer influence, as tools of personalizing products and last but not least develop them as platforms of co-operation and customer-generated innovation. Finally the paper identifies future research directions around this new element of the marketing landscap

The state of research on folksonomies in the field of Library and Information Science : a Systematic Literature Review

Purpose – The purpose of this thesis is to provide an overview of all relevant peer-reviewed articles on folksonomies, social tagging and social bookmarking as knowledge organisation systems within the field of Library and Information Science by reviewing the current state of research on these systems of managing knowledge. Method – I use the systematic literature review method in order to systematically and transparently review and synthesise data extracted from 39 articles found through the discovery system LUBsearch in order to find out which, and to which degree different methods, theories and systems are represented, which subfields can be distinguished, how present research within these subfields is and which larger conclusions can be drawn from research conducted between 2003-2013 on folksonomies. Findings – There have been done many studies which are exploratory or reviewing literature discussions, and other frequently used methods which have been used are questionnaires or surveys, although often in conjunction with other methods. Furthermore, out of the 39 studies, 22 were quantitative, 15 were qualitative and 2 used mixed methods. I also found that there were an underwhelming number of theories being explicitly used, where merely 11 articles explicitly used theories, and only one theory was used twice. No key authors on the topic were identified, though Knowledge Organization, Information Processing & Management and Journal of the American Society for Information Science and Technology were recognised as key journals for research on folksonomies. There have been plenty of studies on how tags and folksonomies have effected other knowledge organisation systems, or how pre-existing have been used to create new systems. Other well represented subfields include studies on the quality or characteristics of tags or text, and studies aiming to improve folksonomies, search methods or tags. Value – I provide an overview on what has been researched and where the focus on said research has been during the last decade and present future research suggestions and identify possible dangers to be wary of which I argue will benefit folksonomies and knowledge organisation as a whole