CiteULike: Group: Social Web - library [373 articles]

SearchTogether: an interface for collaborative web search

Meredith Morris — 2008-06-06T00:35:06-00:00

(2007), pp. 3-12.

A survey of collaborative web search practices

Meredith Morris — 2008-05-04T06:26:04-00:00

(2008), pp. 1657-1660.

Use and reuse of shared lists as a social content type

Werner Geyer — 2008-06-26T18:27:47-00:00

(2008), pp. 1545-1554.

What drives content tagging: the case of photos on Flickr

Oded Nov — 2008-04-18T05:46:10-00:00

(2008), pp. 1097-1100.

PeerChooser: visual interactive recommendation

John O'Donovan — 2008-06-26T16:11:47-00:00

(2008), pp. 1085-1088.

Social tagging roles: publishers, evangelists, leaders

Jennifer Thom-Santelli — 2008-06-01T13:57:07-00:00

(2008), pp. 1041-1044.

Harvesting with SONAR: the value of aggregating social network information

Ido Guy — 2008-06-26T15:53:35-00:00

(2008), pp. 1017-1026.

From awareness to repartee: sharing location within social groups

Louise Barkhuus — 2008-06-26T15:25:34-00:00

(2008), pp. 497-506.

Your place or mine?: visualization as a community component

Catalina Danis — 2008-06-26T15:06:12-00:00

(2008), pp. 275-284.

Results from deploying a participation incentive mechanism within the enterprise

Rosta Farzan — 2008-06-26T14:50:13-00:00

(2008), pp. 563-572.

CoSearch: a system for co-located collaborative web search

Saleema Amershi — 2008-06-03T22:54:28-00:00

(2008), pp. 1647-1656.

A knowledge-based search engine powered by wikipedia

David Milne — 2008-06-18T15:33:19-00:00

(2007), pp. 445-454.

Social Loafing: The Role of Task Attractiveness

Stephen Zaccaro — 2008-04-20T06:15:05-00:00

Pers Soc Psychol Bull, Vol. 10, No. 1. (1 March 1984), pp. 99-106.

The present investigation examined the hypothesis that internal group pressures to maximize productivity would moderate social loafing (the decrease of individual effort as group size increases). Subjects, working in either two-or four-person groups, were told to construct as many folded paper products as they could in a fixed time period. Task attractiveness, a determinant of productivity, was manipulated. As predicted, social loafing occurred in the low task attractiveness conditions. In high task attractiveness conditions, a social enhancement effect occurred where four-person groups outperformed two-person groups. 10.1177/0146167284101011

A personal digital store

Gordon Bell — 2008-04-20T06:10:51-00:00

Commun. ACM, Vol. 44, No. 1. (January 2001), pp. 86-91.

Lurker demographics: counting the silent

Blair Nonnecke — 2005-09-14T21:51:32-00:00

(2000), pp. 73-80.

Jiminy: A Scalable Incentive-Based Architecture for Improving Rating Quality

Evangelos Kotsovinos — 2008-04-19T19:00:36-00:00

Trust Management (2006), pp. 221-235.

In this paper we present the design, implementation, and evaluation of Jiminy: a framework for explicitly rewarding users who participate in reputation management systems by submitting ratings. To defend against participants who submit random or malicious ratings in order to accumulate rewards, Jiminy facilitates a probabilistic mechanism to detect dishonesty and halt rewards accordingly. Jiminy’s reward model and honesty detection algorithm are presented and its cluster-based implementation is described. The proposed framework is evaluated using a large sample of real-world user ratings in order to demonstrate its effectiveness. Jiminy’s performance and scalability are analysed through experimental evaluation. The system is shown to scale linearly with the on-demand addition of slave machines to the Jiminy cluster, allowing it to successfully process large problem spaces.

The effect of extrinsic motivation on user behavior in a collaborative information finding system

Bracha Shapira — 2007-10-08T15:12:38-00:00

J. Am. Soc. Inf. Sci. Technol., Vol. 52, No. 11. (September 2001), pp. 879-887.

Augmenting the Capture and Understanding of Everyday Experiences

Gregory Abowd — 2007-09-26T13:52:06-00:00

s of Individual Research Projects 6 4.1 Investigating research issues in ubiquitous computing: The capture, integration, and access problem . . . . . . . . . . . 6 4.2 Automated understanding of captured experience . . . . . . . . . 6 4.3 Automated capture of software architectural rationale . . . . . . 6 4.4 Command Post of the Future . . . . . . . . . . . . . . . . . . . . 7 5 Detailed Explanation of Proposed Research 8 5.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Analysis of Weblog Link Structure — A Community Perspective

Ying Zhou — 2008-02-17T05:18:39-00:00

Web Information Systems and Technologies (2007), pp. 307-320.

In this paper, we report a two level study on weblog link structures. At the micro level, we carried out an in-depth investigation of individual weblogs. Our goal was to obtain some preliminary understanding of the different types of links that might indicate underlying communities of bloggers. Complete and detailed link data was collected from eight weblogs followed by a variety of analyses. The result shows that both incoming and outgoings follow Zipf like distribution in terms of the sources of those links. These suggest clustering patterns (communities) within the whole blogspace. We also examine the temporal aspects of weblogs. The average life span of a weblog entry is fairly long in most of our sample cases. In addition, analysis on individual comment authors shows that in average, active comment authors maintain a rather long relationship with a certain weblog. It provides evidence that historical data may be useful in understanding weblog communities. On a larger scale, we developed a program to collect complete link data from large number of interconnected weblogs and performed cluster analysis on it. Communities with common topics are successfully extracted using those link data.

Recognizing context for annotating a live life recording

Kern — 2007-06-30T00:01:43-00:00

Personal and Ubiquitous Computing, Vol. 11, No. 4. (April 2007), pp. 251-263.

Do life-logging technologies support memory for the past?: an experimental study using sensecam

Abigail Sellen — 2008-02-25T17:31:01-00:00

(2007), pp. 81-90.

Effective site finding using link anchor information

Nick Craswell — 2006-06-20T15:42:12-00:00

(2001), pp. 250-257.

Link-based ranking methods have been described in the literature and applied in commercial Web search engines. However, according to recent TREC experiments, they are no better than traditional content-based methods. We conduct a different type of experiment, in which the task is to find the main entry point of a specific Web site. In our experiments, ranking based on link anchor text is twice as effective as ranking based on document content, even though both methods used the same BM25 formula. We obtained these results using two sets of 100 queries on a 18.5 million document set and another set of 100 on a 0.4 million document set. This site finding effectiveness begins to explain why many search engines have adopted link methods. It also opens a rich new area for effectiveness improvement, where traditional methods fail.

Collaborative thesaurus tagging the Wikipedia way

Jakob Voss — 2006-04-25T18:57:35-00:00

(10 Apr 2006)

This paper explores the system of categories that is used to classify articles in Wikipedia. It is compared to collaborative tagging systems like del.icio.us and to hierarchical classification like the Dewey Decimal Classification (DDC). Specifics and commonalitiess of these systems of subject indexing are exposed. Analysis of structural and statistical properties (descriptors per record, records per descriptor, descriptor levels) shows that the category system of Wikimedia is a thesaurus that combines collaborative tagging and hierarchical subject indexing in a special way.

Why do tagging systems work?

George Furnas — 2006-05-22T07:30:23-00:00

(2006), pp. 36-39.

The panel will explore the relevance of the emerging tagging systems (Flickr, Del.icio.us, RawSugar and more). Why do they seem to work? What kinds of incentives are required for users to participate? Will tagging survive and scale to mass adoption? What are the behavioral, economic, and social models that underlie each tagging system? What are the dynamics of those systems, and how are they derived from the specific application's design and affordances?.We will demand answers to these questions and others from some of the pioneering practitioners and academics in the field. Bring your wireless laptop to participate in a live tagging experiment! The experiment results will be shown and discussed at the end of the panel. To add to the fun, parts of the discussion will be motivated by short video segments.

Collaborative Tagging and Semiotic Dynamics

Ciro Cattuto — 2006-05-05T05:06:02-00:00

(4 May 2006)

Collaborative tagging has been quickly gaining ground because of its ability to recruit the activity of web users into effectively organizing and sharing vast amounts of information. Here we collect data from a popular system and investigate the statistical properties of tag co-occurrence. We introduce a stochastic model of user behavior embodying two main aspects of collaborative tagging: (i) a frequency-bias mechanism related to the idea that users are exposed to each other's tagging activity; (ii) a notion of memory - or aging of resources - in the form of a heavy-tailed access to the past state of the system. Remarkably, our simple modeling is able to account quantitatively for the observed experimental features, with a surprisingly high accuracy. This points in the direction of a universal behavior of users, who - despite the complexity of their own cognitive processes and the uncoordinated and selfish nature of their tagging activity - appear to follow simple activity patterns.

The Structure of Collaborative Tagging Systems

Scott Golder — 2005-08-27T17:06:09-00:00

(18 Aug 2005)

Collaborative tagging describes the process by which many users add metadata in the form of keywords to shared content. Recently, collaborative tagging has grown in popularity on the web, on sites that allow users to tag bookmarks, photographs and other content. In this paper we analyze the structure of collaborative tagging systems as well as their dynamical aspects. Specifically, we discovered regularities in user activity, tag frequencies, kinds of tags used, bursts of popularity in bookmarking and a remarkable stability in the relative proportions of tags within a given url. We also present a dynamical model of collaborative tagging that predicts these stable patterns and relates them to imitation and shared knowledge.

FAsTA: A Folksonomy-Based Automatic Metadata Generator

Hend Al-Khalifa — 2008-03-10T07:08:10-00:00

Creating New Learning Experiences on a Global Scale (2007), pp. 414-419.

Folksonomies provide a free source of keywords describing web resources, however, these keywords are free form and unstructured. In this paper, we describe a novel tool that converts folksonomy tags into semantic metadata, and present a case study consisting of a framework for evaluating the usefulness of this metadata within the context of a particular eLearning application. The evaluation shows the number of ways in which the generated semantic metadata adds value to the raw folksonomy tags.

Web Page Recommender System based on Folksonomy Mining for ITNG ’06 Submissions

S Niwa — 2006-08-02T01:26:54-00:00

Information Technology: New Generations, 2006. ITNG 2006. Third International Conference on (2006), pp. 388-393.

There have been many attempts to construct web page recommender systems using collaborative filtering. But the domains these systems can cover are very restricted because it is very difficult to assemble user preference data to web pages, and the number of web pages on the Internet is too large. In this paper, we propose the way to construct a new type of web page recommender system covering all over the Internet, by using Folksonomy and Social Bookmark which are getting very popular in these days.

cloudalicious: folksonomy over time

T Russell — 2007-04-26T12:03:35-00:00

Digital Libraries, 2006. JCDL '06. Proceedings of the 6th ACM/IEEE-CS Joint Conference on (2006), pp. 364-364.

Cloudalicious is an online visualization tool that has been designed to give insight into how ¿tag clouds¿, or folksonomies, develop over time. A folksonomy is an organic system of text labels attributed to an object by the users of that object. The most common object so far to be the subject of this tagging has been the online bookmark. Stabilization of a URL's tag cloud over time is the clearest result of this type of visualization. Any diagonal movement on the graphs, indicative of a change in the tags being used to describe a URL, should garner further discussion.

Folksonomy-Based Collaborative Tagging System for Classifying Visualized Information in Design Practice

Hyun-Oh Jung — 2008-03-28T22:21:21-00:00

Human Interface and the Management of Information. Methods, Techniques and Tools in Information Design (2007), pp. 298-306.

The aim of this research is to suggest folksonomy-based collaborative tagging system for supporting designers in group who interpret visualized information such as images through grouping, labeling and classifying for design inspiration. We performed field observation and preliminary studies to examine how designers interpret visualized information in group work. We found that traditional classification methods have some problems like lack of surface and time consuming. Based on this research, we developed PC based group work application, named I-VIDI. By implementing I-VIDI based on functional requirements, we have showed how I-VIDI reduces problems found from current image classification methods such as KJ clustering and MDS. In future case study, we plan to conduct extensive user research to evaluate the system further as well as adding more functions which can be usefully applied to collaborative design work.

Folksonomy as a Complex Network

Kaikai Shen — 2005-10-22T10:31:18-00:00

(23 Sep 2005)

Folksonomy is an emerging technology that works to classify the information over WWW through tagging the bookmarks, photos or other web-based contents. It is understood to be organized by every user while not limited to the authors of the contents and the professional editors. This study surveyed the folksonomy as a complex network. The result indicates that the network, which is composed of the tags from the folksonomy, displays both properties of small world and scale-free. However, the statistics only shows a local and static slice of the vast body of folksonomy which is still evolving.

Social Loafing: A Meta-Analytic Review and Theoretical Integration

Steven Karau — 2007-04-27T16:46:20-00:00

Journal of Personality and Social Psychology, Vol. 65, No. 4. (October 1993), pp. 681-706.

Social loafing is the tendency for individuals to expend less effort when working collectively than when working individually. A meta-analysis of 78 studies demonstrates that social loafing is robust and generalizes across tasks and S populations. A large number of variables were found to moderate social loafing. Evaluation potential, expectations of co-worker performance, task meaningfulness, and culture had espeically strong influence. These findings are interpreted in the light of a Collective Effort Model that integrates elements of expectancy-value, social identity, and self-validation theories.

A Taxonomy of Incentive Patterns - the Design Space of Incentives for Cooperation

Philipp Obreiter — 2005-02-21T17:57:18-00:00

No. 2003-9. (May # 2003)

In ad hoc networks, devices must cooperate in order to compensate for the absence of infrastructure. Yet, autonomous devices are free to decide whether to cooperate or not. Hence, incentives are indispensable to induce cooperation between autonomous devices. Recently, several approaches have been suggested that stimulate cooperation among devices. In this report, we point out that these approaches fall short of exploiting the design space of incentives for cooperation. Therefore, we introduce...

Do Incentive Contracts Crowd Out Voluntary Cooperation?

Ernst Fehr — 2006-06-20T21:17:16-00:00

In this paper we provide experimental evidence indicating that incentive contracts may cause a strong crowding out of reciprocity-driven voluntary cooperation. This crowding out effect constitutes costs of incentive provision that have been largely neglected by economists. In our experiments the crowding out effect is so strong that the incentive contracts are less efficient than contracts without any incentives. Principals, nonetheless, prefer the incentive contracts because they allow them ...

Incentive Systems: A Theory of Organizations

Peter Clark — 2006-12-21T23:55:24-00:00

Administrative Science Quarterly, Vol. 6, No. 2. (1961), pp. 129-166.

Organizations distribute incentives to individuals in order to induce them to contribute activity. Aspects of organizational behavior and change are explained by exploring the differing consequences of different incentive systems. Three types of organizations are distinguished on the basis of three kinds of incentives: material, solidary, and purposive. Hypotheses are presented about the characteristic behavior of these types, and the correspondence between the types and certain actual organizations is shown. Changes in organizational activities and purposes are predicted by assuming that the executive's function is to perpetuate his group, and by assuming that he alters incentives to adapt to changes in the supplies of incentive-yielding resources. Co-operation, conflict, and other relationships among organizations are explained in terms of competition for autonomy and resources. It is suggested that gradual changes of personal motives within a society have predictable consequences for the character of organizations.

The future of eLearning

Jay Cross — 2004-12-28T16:16:06-00:00

On The Horizon - The Strategic Planning Resource for Education Professionals, Vol. 12, No. 4., 151.

Ontologies and Metadata for eLearning

J Brase — 2007-07-02T18:32:06-00:00

(2003)

tadata standards Metadata is data about data that helps us to achieve better search results. Instead of hoping that a full text search through a learning resource will find the author`s name nejdl for example, we can annotate the resource with a metadata description "author is nejdl". While this seems plausible, we also easily realize the two major 2 difficulties this method holds: the technical realisation of "attaching metadata at a resource, and the standardisation of descriptions in order ...

eLearning after Four Decades: What about Sustainability?

Max Mühlhäuser — 2008-01-07T15:49:19-00:00

After four decades of eLearning, we find a wide gap between the academic state of the art and commercially successful, broadly used eLearning in practice. To narrow this gap , we advocate a focus on sustainability in eLearning. To this end, the paper and keynote take the following steps: i) a brief review of the four decades of eLearning; ii) a rough categorization of eLearning concepts as a preparation of step three; iii) a strategy for realizing sustainability; iv) an inspection of the...

Personal digital collections

Luz Quiroga — 2008-01-11T18:56:54-00:00

Proceedings of the American Society for Information Science and Technology, Vol. 43, No. 1. (2006), 199.

The vast growth in digital content generated by individuals marks a new social trend known as ?Generation C? (). Personal content ranges from informal to formal, and includes scholarly papers, blogs, genealogical records, personal webpages, photo albums, family videos, music collections, power point presentations, bookmarks, personal correspondence, articles, computer programs, audio recordings (e.g. research interviews), spaces in collaborative systems, and personal digital libraries. Digital storage available for personal use continues to increase dramatically in capacity while declining in cost. Panelists will address challenges in the design of personal digital collections such as gathering, organizing, preserving, segmenting, accessing, and using digital content. Panelists are leaders in their field, representing an array of perspectives.

Navigating Personal Information Repositories with Weblog Authoring and Concept Mapping

Sebastian Fiedler — 2008-02-17T05:21:43-00:00

Knowledge and Information Visualization (2005), pp. 302-325.

The advent of the Web and the information economy has changed the requirements for learning in the workplace and higher education. To deal with ill-structured, amorphous information, learners need to become self-organized learners capable of identifying both content and process of own learning. Engagement in the learning conversations of self-organized learning requires methods for representing information spontaneously as well as organizing information within a meaningful structure. In this chapter, we identify the role of the emerging practices of Weblog authoring and concept mapping in supporting knowledge construction and meaning-making in amorphous domains. We indicate how the structure and practices of Weblog authoring support construction of a personal repository of information as well as ability to engage in shared dialogue about artifacts. We then identify the facilitatory role of concept mapping in organizing knowledge, and conclude with suggestions for visual mapping tools to support seamless integration of information archival and mapping.

Redefining Social Network Services: A Solution to Personal Information and Knowledge Management

Tingting Jiang — 2008-04-14T01:41:08-00:00

Web Intelligence and Intelligent Agent Technology Workshops, 2007 IEEE/WIC/ACM International Conferences on (2007), pp. 292-295.

Instead of aiming at the augmentation of human communication abilities as other social software does, social network services (SNS) provide better chances for people to enhance their abilities to handle interpersonal relationships, by deriving their theoretical foundation from social network theory. However, they are far from working perfectly as reflected by the defects in the networks – distrust, fragmentation, and duplication. This paper addresses such problems innovatively in the context of personal information and knowledge management (PIKM), which involves a series of activities in our daily life and work that can be well supported by restructured SNS. While our future efforts target an operable SNS system as the solution to PIKM, our research at current stage gives full consideration to the identified problems, and achieves an initial system model with four primary modules: Personal Profile, Collaboration Workspace, Knowledge Network of Practice, and Platform.

The future of e-learning communities

Amy Bruckman — 2008-04-13T21:50:46-00:00

Commun. ACM, Vol. 45, No. 4. (April 2002), pp. 60-63.

Social software: E-learning beyond learning management systems

Christian Dalsgaard — 2006-10-04T18:47:48-00:00

European Journal of Open and Distance Learning (EURODL) (2006)

The Measurement of Social Presence in an Online Learning Environment

Chih Tu — 2008-04-13T21:31:19-00:00

International Journal on E-Learning, Vol. 1, No. 2. (2002), pp. 34-45.

Social presence is a critical social factor to be examined in distance education. The existing instrument, developed for non-computer-mediated communication, is unable to measure social presence in an online learning environment. Several studies have investigated social presence but an instrument appropriate for computer-mediated communication must be developed before cogent studies can be conducted. An analysis of the studies on social presence is accomplished leading to the development and validation of an instrument to measure social presence in the computer-mediated communication environment. This instrument was theoretically grounded in the dimensions derived from an extensive review of the literature and thus reflects a consensus of the perceptions of online social presence. The results indicate that social presence contains three dimensions, social context, online communication, and interactivity and, privacy.

Exchange-based incentive mechanisms for peer-to-peer file sharing

KG Anagnostakis — 2007-04-21T04:19:52-00:00

Distributed Computing Systems, 2004. Proceedings. 24th International Conference on (2004), pp. 524-533.

Performance of peer-to-peer resource sharing networks depends upon the level of cooperation of the participants. To date, cash-based systems have seemed too complex, while lighter-weight credit mechanisms have not provided strong incentives for cooperation. We propose exchange-based mechanisms that provide incentives for cooperation in peer-to-peer file sharing networks. Peers give higher service priority to requests from peers that can provide a simultaneous and symmetric service in return. We generalize this approach to n-way exchanges among rings of peers and present a search algorithm for locating such rings. We have used simulation to analyze the effect of exchanges on performance. Our results show that exchange-based mechanisms can provide strong incentives for sharing, offering significant improvements in service times for sharing users compared to free-riders, without the problems and complexity of cash- or credit-based systems.

Encouraging contributions in learning networks using incentive mechanisms

HGK Hummel — 2005-09-21T14:59:21-00:00

Journal of Computer Assisted Learning, Vol. 21, No. 5. (October 2005), pp. 355-365.

Social networks, incentives, and search

Jon Kleinberg — 2006-12-11T13:11:30-00:00

(2006), pp. 210-211.

Connectivism:A Learning Theory for the Digital Age

George Siemens — 2008-04-12T18:31:15-00:00

Connectivism: Learning and Knowledge Today

George Siemens — 2008-04-12T18:30:18-00:00

Meaningful interaction in web-based learning: A social constructivist interpretation

Younghee Woo — 2007-12-17T00:51:22-00:00

The Internet and Higher Education, Vol. 10, No. 1. (2007), pp. 15-25.

Interaction is an essential ingredient in any learning process. However, every interaction does not lead to increased learning. When interaction has a direct influence on learners' intellectual growth, we can say the interaction is meaningful. The precise meaning of meaningful interaction is strongly related to the learning theories underlying the development of particular learning environments. The primary goal of this paper is to re-conceptualize online interaction in terms of meaningful learning based on the learning theory known as social constructivism. Analyzing interaction through this theoretical framework may yield design principles needed to improve the quality of Web-based learning environments. A secondary goal of this paper is to present the implications of meaningful online interaction for researchers and developers.