in complex online social networks

... Model of Online Social Networking) was initially empirically validated using primary data A quantitative approach involving a small-scale online pilot survey (n252) and a wide-scale online survey ... 2010 p.3) Online Social Networks (OSNs) Having explained the term technology, the technology of focus in this research is Online Social Networks, which is referred to as OSNs from this point forward ... technologies These included the technology being complex for most household users; a lack of incentive for internet Investigating the Adoption, Use and Diffusion of Online Social Networks in the Older...

Ngày tải lên: 11/10/2014, 04:00

... role in determining the degree of in uence, is also not considered In our work on inferring topic-level in uence, we take into account the temporal factor in social in uence to infer the in uential ... homogeneous networks, mining topic-level in uence on heterogeneous networks, and conformity in uence In this thesis, we perform in uence analysis for online social networks by addressing three ... people in online activities like content sharing (e.g., text, images), social networking (e.g., Facebook, Twitter), and social bookmarking (e.g., ratings, tagging) With the prevalence of online social...

Ngày tải lên: 09/09/2015, 11:15

... go to shopping online at Amazon2 , make new friends online on Facebook3 , write their daily updates online in Twitter4 and watch the latest videos on YouTube5 , etc The increasing online traffic ... ratings on items to learn a model, which is then used to make rating predictions Model-based recommender methods incorporate techniques from statistics, data mining and machine learning, including ... topic in mind when choosing a word for a document, likewise a user has an interest in mind when following another user in Twitter Hence, each follower f can be regarded as a document consisting...

Ngày tải lên: 09/09/2015, 11:26

... dataset into two parts for each task, i.e the testing set containing x% of task-related information and the training set for the remaining data We perform community detection on the training set ... him/her 3.2 Data Crawling We aim to obtain a set of active users and their activities in Foursquare The activities of interest include checking in at venues, posting tips and uploading photos, where ... heterogeneous interactions such as posting certain comments or uploading certain photos while visiting certain places We then view each detected social community as a dense subgraph within the heterogeneous...

Ngày tải lên: 10/09/2015, 09:06

... Top Five Communities in Singapore In this section, we show the top five communities detected in Singapore We manually observe and derive the community profiles from the prominent venue categories, ... 109 Rank Visualization Profile • Drink/Snack lovers • Group Size: 1,101 • Sports Enthusiasts • Group Size: 1,095 • Home Lovers • Group...

Ngày tải lên: 10/09/2015, 09:06

... in additional to sightseeing, we are often interested in exploring local cultures, which match our personal interests, such as sampling local cuisines, understanding local customs, and visiting ... exercise in the gyms after work The inherent heterogenous user preferences make it hard to interpret the connections between people in social networks Towards gaining insights on the underlying users’ ... examples of locally interesting venues in four cities We can see that most of these locally interesting venues are not available in the famous touring sites yet they are indeed of interests to tourists...

Ngày tải lên: 10/09/2015, 09:07

... capture social interactions among users However, different from others, ESBNs incorporate two forms of social interactions: online social interactions and offline social interactions Online social interactions ... EBSNs against individual online/ offline networks Only the paralleled diffusion model outperforms the online or offline only model This means that the joint presence of online and offline social interactions ... stands for the set of online social interactions (arcs), and Aoff denotes the set of offline social interactions (arcs) The online social interactions of an EBSN form an online social network Gon...

Ngày tải lên: 19/02/2014, 18:20

Ngày tải lên: 01/04/2014, 11:21

... of interest in social network theory, and empirical work exploring the influence of social networks, as well as attempts to use social networks in interventions, our understanding of how social ... believe our findings will be of interest to social scientists more generally As we noted above, we think it likely that insights we gain into the functions of social networks in LTC settings are ... the networks We will include two methods of capturing social network data in the units included in the study Questionnaires to elicit social networks related to feedback reports We will obtain...

Ngày tải lên: 10/08/2014, 10:23

... conducting longitudinal research of change processes [17,19] Descriptions of the cases, i.e., interventions All three interventions are complex in nature, including several active ingredients In ... used to investigate the implementation processes of three intervention studies Thus, a case is defined as an intervention study Each case will be investigated in depth and longitudinally, using both ... participant responsiveness were included in the framework as moderating factors Intervention complexity has been found to influence the implementation fidelity, i.e., complex interventions were more...

Ngày tải lên: 10/08/2014, 10:23

... contacts so far Knowing each other was defined in the questionnaire as ‘knowing the face, having talked to each with other, or having heard of.’ Having professional contact was defined in the questionnaire ... density in the local neighborhoods of individuals rather than in the total network Here it is defined as the density in the networks of others connected to an individual (leaving out ego in the ... reach in a specific number of steps in the network of in/ outgoing connections Betweenness centrality Number of pathways in the network in which an individual is in between’ of two other individuals...

Ngày tải lên: 10/08/2014, 11:20

... semistructured interviews To assess status and interconnectivity within the network, we calculated degree centrality for both incoming ties (being nominated by alters) and outgoing ties (nominating alters) ... leadership in enhancing organizational innovation: hypotheses and some preliminary findings Leadership Q 2003, 14:525-544 13 Valente TW, Davis RL: Accelerating the diffusion of innovations using opinion ... importance of networks involving ties to counties with resources or the pooling of resources via existing networks These networks also exposed agency directors and senior administrators to information...

Ngày tải lên: 10/08/2014, 11:20

... T: Uncovering the overlapping community structure of complex networks in nature and society Nature 2005, 435:814-818 Newman MEJ, Girvan M: Finding and evaluating community structure in networks ... related algorithm development Networks describing social interactions in our study are (in ascending number of nodes): the Zachary network of social relationships in an American university club ... ratio and community structure in networks Phys Rev E 2010, 81:026105 Xu G, Tsoka S, Papageorgiou LG: Finding community structures in complex networks using mixed integer optimisation Eur Phys...

Ngày tải lên: 12/08/2014, 17:20

... become an emerging de facto standard of information privacy 2.2 On Practicing Privacy in Social Networks With the increasing prevalence of social networks, the problem of privacy-preserving network ... is, facilitating individual users in configuring their privacy setting in OSN sites In this part, we will mainly focus on the practical issues of applying access control techniques in a collaborative ... 2.2 On Practicing Privacy in Social Networks 12 2.2.1 Applying k-anonymity on social networks 12 2.2.2 Applying anonymity by randomization on social networks 14...

Ngày tải lên: 09/09/2015, 11:27

... politically-conscious individuals, and that overlaps between online and offline social networks must exist in order for online connections to translate into some form of collective action offline By incorporating ... within networks transmit information, foster trust, build solidarity and exert social pressure The review of online social networks reiterates the importance of online networks in fostering connection ... where such ties were integrated into the individual’s central life-spheres which they defined as inter-related areas in an individual’s life Informal social networks Empirical findings established...

Ngày tải lên: 10/09/2015, 15:52

... access to online information and online groups lead people to new organizations and increased involvement with existing organizations The surge in online usage has stimulated the growth of online communities ... within many groups online Communities established on the Internet could also develop offline relationships through social gatherings and activities The widening of social circles through online interaction ... relationships formed in cyberspace continue in physical space, leading to new forms of community characterized by a mixture of online and offline interactions (Rheingold, 2000) Moreover, online interactions...

Ngày tải lên: 27/11/2015, 12:13

... recognize that as a social being she is constrained to abide by the transfer norm in her dealings with j, provided that she wants to maintain those dealings But she may not want to maintain them It may ... to q + 1, link jk remains In particular, this implies that j remains linked to i in the resulting graph, and remains linked (through i) to all agents who have severed their direct link to j Hence, ... (2004) “Learning From Neighbors: Social Learning About Child Feeding During Diarrheal Episodes,” working paper (11) Dercon, S and J de Weerdt (2000) “Risk-Sharing Networks and Insurance against Illness,”...

Ngày tải lên: 06/12/2015, 06:56

... categories, the internal cut-off link and the mutual server link The internal server link is between the page link in the server, and these links use in calculating on each server's place PageRank intermediate ... relationships among users over the Internet The initial use of P2P networks in business followed the deployment in the early 1980s of free-standing PCs In contrast to the mini-mainframes of the day (e.g ... the set Bu (this set contains all data linking to page u), divided by the number L(v) of links from page v Damping factor The PageRank theory will maintain at the link clicks on the surf rider...

Ngày tải lên: 20/11/2012, 11:36

... UNIVERSITY OF TECHNOLOGY AND ENGINEERING Binh Minh Nguyen EFFICIENT CORE SELECTION FOR MULTICAST ROUTING IN MOBILE AD HOC NETWORKS GRADUATION THESIS Faculty of Information Technology Supervisor: ... method, with certain routers shaded in green to indicate that they are actively involved in supporting the multicast Here, the sender transmits a single datagram packet The router within network then ... receiver initiated approach in which a receiver joins a multicast group by using the address of a special node (core in CAMP or group leader in MAODV) without having to perform a network-wide flooding...

Ngày tải lên: 23/11/2012, 15:03