Thu, 07 Aug 2008 21:33:43 BST CiteULike: Group: Semantic-Social-Networks - library [661 articles] http://www.citeulike.org/group/328 CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/group/328/article/2870098 <i>(04 May 2008)</i><br /><br /><div id="SUM_display">No matter what type of web site or application you’re building, social interaction among the people who use it will be key to its success. They will talk about it, invite their friends, complain, sing its high praises, and dissect it in countless ways. With the right design strategy you can use this social interaction to get people signing up, coming back regularly, and bringing others into the fold. With tons of examples from real-world interfaces and a touch of the underlying social psychology theory, Joshua Porter shows you how to design your next great social web application. <br><br>Inside, you’ll discover:<br>• The real reasons why people participate online and the psychology behind them<br>• The Usage Lifecycle—or how people use your web application over time<br>• How to get people past that trickiest of hurdles: sign-up<br>• What to do when you’ve launched a web application and nobody is using it<br>• How to analyze the effectiveness of your application screens and flows<br>• How to grow your social web application from zero users to 1000—and beyond<br><br>Designing for the social web is about much more than adding features. It’s about embracing the social interaction of the people who make you successful—and then designing smartly to encourage it.<br> </div> <hr align="left" color="#cccccc" noshade="noshade" size="1" width="100%"> Designing for the Social Web (Voices That Matter) Joshua Porter (04 May 2008) 2008-06-06T17:13:23-00:00 2008 New Riders Press socialweb web20 http://www.citeulike.org/group/328/article/1189220 <i>(13 Dec 2006)</i><br /><br />To account for strong aging characteristics of citation networks, we modify Google's PageRank algorithm by initially distributing random surfers exponentially with age, in favor of more recent publications. The output of this algorithm, which we call CiteRank, is interpreted as approximate traffic to individual publications in a simple model of how researchers find new information. We develop an analytical understanding of traffic flow in terms of an RPA-like model and optimize parameters of our algorithm to achieve the best performance. The results are compared for two rather different citation networks: all American Physical Society publications and the set of high-energy physics theory (hep-th) preprints. Despite major differences between these two networks, we find that their optimal parameters for the CiteRank algorithm are remarkably similar. Ranking Scientific Publications Using a Simple Model of Network Traffic Dylan Walker Huafeng Xie Koon-Kiu Yan Sergei Maslov (13 Dec 2006) 2007-03-27T14:13:45-00:00 2006 no-tag http://www.citeulike.org/group/328/article/2734410 <i>Journal of Leisure Research, Vol. 29, No. 2. (1997), 183.</i><br /><br />Social interaction is among the most frequently reported reasons for participation in leisure. However, little is known about the nature of social interaction processes in leisure settings and whether these are different than those occurring in non-leisure contexts (or if they vary in different leisure contexts). This paper examines the potential contributions of social exchange theory to the study of leisure behaviour, and presents the results of an exploratory investigation which utilized social exchange theory to examine resource exchange occurring in both leisure and non-leisure settings. Overall differences in perceptions about resource exchange in leisure and non-leisure contexts existed among respondents, and males and females had different perceptions of the resource exchange occurring in a leisure setting. The results suggest that social exchange theory provides a promising means to develop further understanding of the social aspects of leisure behaviour and, in turn, assist the continuing formulation of leisure theory through integration with other theoretical approaches. SOCIAL EXCHANGE PROCESSES IN LEISURE AND NON-LEISURE SETTINGS: A REVIEW AND EXPLORATORY INVESTIGATION Christopher Auld Alan Case Journal of Leisure Research, Vol. 29, No. 2. (1997), 183. 2008-04-29T14:36:55-00:00 1997 Journal of Leisure Research 29 2 183 no-tag http://www.citeulike.org/group/328/article/2734377 <i>Journal of Computer-Mediated Communication, Vol. 3, No. 4. (1998), pp. 0-0.</i><br /><br />Abstract This paper explores the challenges of creating and maintaining trust in a global virtual team whose members transcend time, space, and culture. The challenges are highlighted by integrating recent literature on work teams, computer-mediated communication groups, cross-cultural communication, and interpersonal and organizational trust. To explore these challenges empirically, we report on a series of descriptive case studies on global virtual teams whose members were separated by location and culture, were challenged by a common collaborative project, and for whom the only economically and practically viable communication medium was asynchronous and synchronous computer-mediated communication. The results suggest that global virtual teams may experience a form of 'swift' trust but such trust appears to be very fragile and temporal. The study raises a number of issues to be explored and debated by future research. Pragmatically, the study describes communication behaviors that might facilitate trust in global virtual teams. Communication and Trust in Global Virtual Teams Sirkka Jarvenpaa Dorothy Leidner doi:10.1111/j.1083-6101.1998.tb00080.x Journal of Computer-Mediated Communication, Vol. 3, No. 4. (1998), pp. 0-0. 2008-04-29T14:28:40-00:00 1998 Journal of Computer-Mediated Communication 3 4 0 0 no-tag http://www.citeulike.org/group/328/article/2734361 <i>Journal of Management, Vol. 31, No. 6. (1 December 2005), pp. 874-900.</i><br /><br />Social exchange theory (SET) is one the most influential conceptual paradigms in organizational behavior. Despite its usefulness, theoretical ambiguities within SET remain. As a consequence, tests of the model, as well as its applications, tend to rely on an incompletely specified set of ideas. The authors address conceptual difficulties and highlight areas in need of additional research. In so doing, they pay special attention to four issues: (a) the roots of the conceptual ambiguities, (b) norms and rules of exchange, (c) nature of the resources being exchanged, and (d) social exchange relationships. 10.1177/0149206305279602 Social Exchange Theory: An Interdisciplinary Review Russell Cropanzano Marie Mitchell doi:10.1177/0149206305279602 Journal of Management, Vol. 31, No. 6. (1 December 2005), pp. 874-900. 2008-04-29T14:25:16-00:00 2005 Journal of Management 31 6 874 900 social-networks theory http://www.citeulike.org/group/328/article/740681 <i>J. Inf. Sci., Vol. 32, No. 2. (April 2006), pp. 198-208.</i> Usage patterns of collaborative tagging systems Scott Golder Bernardo Huberman doi:10.1177/0165551506062337 J. Inf. Sci., Vol. 32, No. 2. (April 2006), pp. 198-208. 2006-07-05T17:36:01-00:00 2006 J. Inf. Sci. 0165-5515 32 2 198 208 Sage Publications, Inc. patterne tagging usage http://www.citeulike.org/group/328/article/382696 <i>(JanuaryMay--JanuaryJuly~ 2000), pp. 1-10.</i><br /><br />The pages and hyperlinks of the World-Wide Web maybe viewed as nodes and edges in a directed graph. This graph has about a billion nodes today,several billion links, and appears to grow exponentially with time. There are many reasons---mathematical, sociological, and commercial---for studying the evolution of this graph. We first review a set of algorithms that operate on the Web graph, addressing problems from Web search, automatic community discovery, and classification. We then recall a... The Web as a Graph Ravi Kumar Prabhakar Raghavan Sridhar Rajagopalan D Sivakumar Andrew Tomkins Eli Upfal (JanuaryMay--JanuaryJuly~ 2000), pp. 1-10. 2005-11-07T12:18:38-00:00 2000 1 10 ACM Press graph semanticweb http://www.citeulike.org/group/328/article/2615531 <i>(28 February 2008)</i> Kollektive Intelligenz. analysieren, programmieren und nutzen Toby Segaran (28 February 2008) 2008-03-31T09:10:12-00:00 2008 O'Reilly Verlag datamining machine-learning programming python recommendation http://www.citeulike.org/group/328/article/770132 <i>Proc Natl Acad Sci U S A, Vol. 98, No. 2. (16 January 2001), pp. 676-682.</i><br /><br />A baseline or control state is fundamental to the understanding of most complex systems. Defining a baseline state in the human brain, arguably our most complex system, poses a particular challenge. Many suspect that left unconstrained, its activity will vary unpredictably. Despite this prediction we identify a baseline state of the normal adult human brain in terms of the brain oxygen extraction fraction or OEF. The OEF is defined as the ratio of oxygen used by the brain to oxygen delivered by flowing blood and is remarkably uniform in the awake but resting state (e.g., lying quietly with eyes closed). Local deviations in the OEF represent the physiological basis of signals of changes in neuronal activity obtained with functional MRI during a wide variety of human behaviors. We used quantitative metabolic and circulatory measurements from positron-emission tomography to obtain the OEF regionally throughout the brain. Areas of activation were conspicuous by their absence. All significant deviations from the mean hemisphere OEF were increases, signifying deactivations, and resided almost exclusively in the visual system. Defining the baseline state of an area in this manner attaches meaning to a group of areas that consistently exhibit decreases from this baseline, during a wide variety of goal-directed behaviors monitored with positron-emission tomography and functional MRI. These decreases suggest the existence of an organized, baseline default mode of brain function that is suspended during specific goal-directed behaviors. A default mode of brain function. ME Raichle AM MacLeod AZ Snyder WJ Powers DA Gusnard GL Shulman doi:10.1073/pnas.98.2.676 Proc Natl Acad Sci U S A, Vol. 98, No. 2. (16 January 2001), pp. 676-682. 2006-07-23T20:49:37-00:00 2001 Proc Natl Acad Sci U S A 0027-8424 98 2 676 682 cortex fmri network resting_state http://www.citeulike.org/group/328/article/1659399 <i></i><br /><br />People come to online communities seeking information, encouragement, and conversation. When a community responds, participants benefit and become more committed. Yet interactions often fail. In a longitudinal sample of 6,172 messages from 8 Usenet newsgroups, 27% of posts received no response. The information context, posters' prior engagement in the community, and the content of their posts all influenced the likelihood that they received a reply, and, as a result, their willingness to continue active participation. Posters were less likely to get a reply if they were newcomers. Posting ontopic, introducing oneself via autobiographical testimonials, asking questions, using less complex language and other features of the messages, increased replies. Results suggest ways that developers might increase the ability of online communities to support successful individual-group interactions. Talk to me: foundations for successful individual-group interactions in online communities Jaime Brian Elisabeth Robert Kimberly Carolyn Xiaoqing 2007-09-15T00:28:56-00:00 communities online successful http://www.citeulike.org/group/328/article/1279899 <i>(2007), pp. 435-444.</i> A familiar face(book): profile elements as signals in an online social network Cliff Lampe Nicole Ellison Charles Steinfield doi:10.1145/1240624.1240695 (2007), pp. 435-444. 2007-05-05T19:34:20-00:00 2007 435 444 ACM Press facebook network online social http://www.citeulike.org/group/328/article/165117 <i>(2004), pp. 212-221.</i> Using social psychology to motivate contributions to online communities Gerard Beenen Kimberly Ling Xiaoqing Wang Klarissa Chang Dan Frankowski Paul Resnick Robert Kraut doi:10.1145/1031607.1031642 (2004), pp. 212-221. 2005-04-19T18:59:18-00:00 2004 212 221 ACM Press communities contributions motivate online phsycology social http://www.citeulike.org/group/328/article/1358099 <i>(2007), pp. 825-834.</i> The two cultures: mashing up web 2.0 and the semantic web Anupriya Ankolekar Markus Kr&\#246;tzsch Thanh Tran Denny Vrandecic doi:10.1145/1242572.1242684 (2007), pp. 825-834. 2007-06-02T19:05:28-00:00 2007 825 834 ACM Press 20 semantic web http://www.citeulike.org/group/328/article/1511759 <i>(2007), pp. 845-854.</i> P-TAG: large scale automatic generation of personalized annotation tags for the web Paul Stefania Costache Wolfgang Nejdl Siegfried Handschuh doi:10.1145/1242572.1242686 (2007), pp. 845-854. 2007-07-29T17:37:17-00:00 2007 845 854 ACM Press annotation semantic tags web http://www.citeulike.org/group/328/article/1292108 <i>(2007), pp. 1435-1444.</i> Making mashups with marmite: towards end-user programming for the web Jeffrey Wong Jason Hong doi:10.1145/1240624.1240842 (2007), pp. 1435-1444. 2007-05-13T05:12:13-00:00 2007 1435 1444 ACM Press end-user mashups programming web http://www.citeulike.org/group/328/article/1659314 <i>(2007), pp. 255-264.</i> From representations to computations: the evolution of web architectures Justin Erenkrantz Michael Gorlick Girish Suryanarayana Richard Taylor doi:10.1145/1287624.1287660 (2007), pp. 255-264. 2007-09-14T23:33:26-00:00 2007 255 264 ACM Press ajax architectures mashups rest services web http://www.citeulike.org/group/328/article/1659300 <i>(2005), pp. 1-9.</i> ROSA - P2P: a peer-to-peer system for Learning Objects integration on the web Gabriel Ana doi:10.1145/1114223.1114227 (2005), pp. 1-9. 2007-09-14T23:22:24-00:00 2005 1 9 ACM Press architecture distributed p2p peer system to web http://www.citeulike.org/group/328/article/1659285 <i>(2007), pp. 1-6.</i> Enabling an accessible web 2.0 Becky Gibson doi:10.1145/1243441.1243442 (2007), pp. 1-6. 2007-09-14T23:13:29-00:00 2007 1 6 ACM Press 20 accessible enable web http://www.citeulike.org/group/328/article/1659273 <i>(2007), pp. 35-39.</i> Web 2.0: hype or happiness? Mary Zajicek doi:10.1145/1243441.1243453 (2007), pp. 35-39. 2007-09-14T23:09:45-00:00 2007 35 39 ACM Press 20 approach holistic interaction web http://www.citeulike.org/group/328/article/1659253 <i>(May 2007)</i><br /><br />Web 2.0 is a new approach to Web content, making it more interactive and allowing sites to combine features in new ways. This change in paradigm brings new challenges to people with disabilities. Accessibility advocates must develop solutions rapidly. Semantic Web technologies address some of these requirements, and accessibility innovation may be part of A convergence of the Web 2.0 and Semantic Web. Understanding accessibility: Accessibility of emerging rich web technologies: web 2.0 and the semantic web Michael Cooper (May 2007) 2007-09-14T22:58:27-00:00 2007 ACM Press accessability semantic technologies web web20 http://www.citeulike.org/group/328/article/1648137 <i></i><br /><br />Sport video data is growing rapidly as a result of the maturing digital technologies that support digital video capture, faster data processing, and large storage. However, (1) semi-automatic content extraction and annotation, (2) scalable indexing model, and (3) effective retrieval and browsing, still pose the most challenging problems for maximizing the usage of large video databases. This paper will present the findings from a comprehensive work that proposes a scalable and extensible sports video retrieval system with two major contributions in the area of sports video indexing and retrieval. First, is an extensible sports video indexing model that utilizes semi-schema-based indexing scheme on top of an Object-Relationship approach to support gradual content-extraction. Second, is a set of novel queries which are based on XQuery to generate dynamic and user-oriented summaries and event structures. The proposed sports video retrieval system has been fully implemented and populated with soccer, tennis, swimming, and diving video. The system has been evaluated against 20 users to demonstrate and confirm its feasibility and benefits. The experimental sports genres were specifically selected to represent the four main categories of sports domain: period-, set-point-, time (race)-, and performance- based sports. Thus, the proposed system should be generic and robust for all types of sports. A Scalable and Extensible Segment-Event-Object based Sports Video Retrieval System Dian Tjondronegoro Yi-Ping Chen Adrien Joly Lei Wang 2007-09-12T14:37:02-00:00 automatic content database extraction indexing interaction mobile mpeg-7 retrieval sports system video xml xquery http://www.citeulike.org/group/328/article/1648133 <i>International Journal of Web Information Systems, Vol. 2, No. 3/4. (2006), pp. 197-211.</i><br /><br />Affordable mobile devices with video playback functionality are rapidly growing in the market. Current wireless and third generation communication networks enable smoother and higher quality streaming video. With the support of these technologies, most participants in telecom value-added service chain are planning to shift their business focus to a more profitable and appealing area, mobile TV. Previous work that survey on users' behavior while consuming mobile TV has indicated that users normally watch brief and casual contents, and not the full program. However, most of the current services adopt a “push” approach since users passively receive pre-defined contents, rather than pulling the interesting topics and segments. In order to promote a more enjoyable and rewarding watching experience, this paper will propose a framework to support a fully interactive mobile TV. The main goal is to enable users to: 1) visually locate interesting topics across multiple genres (such as news, sports and entertainment) and 2) fully control the playback flow of the multimedia items while selecting the most interesting segments. A web-based system has been developed to implement and test the effectiveness of the proposed framework in a wireless and mobile setting. Delivering a Fully Interactive Mobile TV Dian Tjondronegoro Lei Wang Adrien Joly International Journal of Web Information Systems, Vol. 2, No. 3/4. (2006), pp. 197-211. 2007-09-12T14:35:02-00:00 2006 International Journal of Web Information Systems 2 3/4 197 211 Emerald Group Publishing Limited indexing interactive interface mobile multimedia retrieval services tv webbased http://www.citeulike.org/group/328/article/1648127 <i>(2006)</i><br /><br />With the growing popularity of mobile devices (including phones and portable media players) and coverage of Internet access, we tend to develop the need of consuming video content on the move. Some technologies already allow end-users to watch TV and listen to news podcasts or download music videos on their devices. However, such services are restricted to a provider's selection of preformatted and linear content streams. Hence, we propose a web-based interface system that supports interactive contents navigation, making it possible for end-users to "surf" on video content like they are used to on the Web. This system is extensible to any specific domain of video contents, any webenabled platform, and to any browsing scheme. In this paper, we will explain the architecture and design of this system, propose an application for soccer videos and present the results of its user evaluation. An Adaptive and Extensible Web-based Interface System for Interactive Video Contents Browsing Adrien Joly Dian Tjondronegoro (2006) 2007-09-12T14:31:15-00:00 2006 Springer architecture browse content hypermedia multimedia navigation pipeline semantic video xml http://www.citeulike.org/group/328/article/1580036 <i>(2004)</i> De-Lurking in Virtual Communities: A Social Communication Network Approach to Measuring the Effects of Social and Cultural Capital S Rafaeli G Ravid V Soroka (2004) 2007-08-21T12:45:44-00:00 2004 IEEE Computer Society Washington, DC, USA phd-draft http://www.citeulike.org/group/328/article/1580035 <i>(2000)</i> What do virtual "Tells" tell? 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