P. Résultats-du, 71 4.1 représentation de 500 2-dimensionnel point de donnée X n = X n,1 , X n, p.78

B. Korst, Simulated Annealing and Boltzmann Machines : A Stochastic Approach to Combinatorial Optimization and Neural Computing, 1989.

A. Acquisti, Privacy in electronic commerce and the economics of immediate gratification, Proceedings of the 5th ACM conference on Electronic commerce , EC '04, 2004.
DOI : 10.1145/988772.988777

L. Adamic, O. Buyukkokten, and E. Adar, A social network caught in the Web, First Monday, vol.8, issue.6, 2003.
DOI : 10.5210/fm.v8i6.1057

E. Adar, GUESS, Proceedings of the SIGCHI conference on Human Factors in computing systems , CHI '06, pp.791-800, 2006.
DOI : 10.1145/1124772.1124889

Y. Ahn, S. Han, H. Kwak, S. Moon, and H. Jeong, Analysis of topological characteristics of huge online social networking services, Proceedings of the 16th international conference on World Wide Web , WWW '07, pp.835-844, 2007.
DOI : 10.1145/1242572.1242685

R. Albert, H. Jeong, and A. L. Barabasi, The Diameter of the World Wide Web, Nature, vol.401, pp.130-131, 1999.

L. A. Amaral, A. Scala, M. Barthélémy, and H. E. Stanley, Classes of small-world networks, Proceedings of the National Academy of Sciences, p.11149, 2000.
DOI : 10.1073/pnas.200327197

Y. Amsterdamer, Y. Grossman, T. Milo, and P. Senellart, Crowd mining, Proceedings of the 2013 international conference on Management of data, SIGMOD '13, pp.241-252, 2013.
DOI : 10.1145/2463676.2465318

URL : https://hal.archives-ouvertes.fr/hal-00874443

Y. Amsterdamer, Y. Grossman, T. Milo, and P. Senellart, CrowdMiner, Proceedings of the VLDB Endowment, vol.6, issue.12, pp.1250-1253, 2013.
DOI : 10.14778/2536274.2536288

S. Anna, C. , M. Shehab, and F. Paci, Collective privacy page 525/526/527 management in social networks security and privacy, 2009.

A. Bansal, T. Chen, and S. Zhong, Privacy preserving Back-propagation neural network learning over arbitrarily partitioned data, Neural Computing and Applications, pp.143-150, 2011.
DOI : 10.1007/s00521-010-0346-z

A. L. Barabasi and R. Albert, Emergence of scaling in random networks, Science, vol.286, pp.509-512, 1999.

A. Barrat, C. Cattuto, V. Colizza, L. Isella, C. Rizzo et al., Wearable Sensor Networks for Measuring Face-to-Face Contact Patterns in Healthcare Settings, Proceedings of the 3rd International ICST Conference on Electronic Healthcare for the 21st century, 2010.
DOI : 10.1017/CBO9780511791383

S. Mathieu-bastian, M. Heymann, and . Jacomy, Gephi : An open source software for exploring and manipulating networks, 2009.

J. Baumes, M. K. Goldberg, M. S. Krishnamoorthy, M. Magdon-ismail, and N. Preston, Finding communities by clustering a graph into overlapping subgraphs, IADIS AC, pp.97-104, 2005.

J. Baumes, M. K. Goldberg, and M. , Efficient Identification of Overlapping Communities, Lecture Notes in Computer Science, vol.3495, pp.27-36, 2005.
DOI : 10.1007/11427995_3

S. Benbernou, H. Meziane, and M. Hacid, Runtime monitoring for privacy-agreement compliance, ICSOC, pp.353-364, 2007.

F. S. Lee, S. Bistarelli, and H. F. Leung, A local search framework for semiring-based constraint satisfaction problems, the 5th International Workshop on Soft Constraints, 2003.

B. Bollobas, Random Graphs, 2001.
URL : https://hal.archives-ouvertes.fr/hal-00914127

A. Borodin, Y. Filmus, and J. Oren, Threshold Models for Competitive Influence in Social Networks, Lecture Notes in Computer Science, vol.6484, pp.539-550
DOI : 10.1007/978-3-642-17572-5_48

F. Brauer and C. Castillo-chavez, Mathematical models in population biology and epidemiology, 2001.

A. Broder, R. Kumar, F. Maghoul, P. Raghavan, R. Sridhar-rajagopalan et al., Graph structure in the Web, Proceedings of the 9th International World Wide Web Conference on Computer Networks : The International Journal of Computer and Telecommunications Netowrking, pp.309-320, 2000.
DOI : 10.1016/S1389-1286(00)00083-9

C. Kruegel, C. Karlberger, G. Bayler, and E. Kirda, Exploiting redundancy in natural language to penetrate bayesian spam filters, 2007.

G. Caldarelli, Scale-free networks : complex webs in nature and technology Informations sur l' ? A c diteur http, 2007.
DOI : 10.1093/acprof:oso/9780199211517.001.0001

B. Carminati, E. Ferrari, and A. Perego, Rule-Based Access Control for Social Networks, OTM Workshops, pp.1734-1744, 2006.
DOI : 10.1007/11915072_80

B. Carminati, E. Ferrari, and A. Perego, Enforcing access control in Web-based social networks, ACM Transactions on Information and System Security, vol.13, issue.1, 2009.
DOI : 10.1145/1609956.1609962

H. Chun, H. Kwak, Y. Eom, Y. Ahn, S. Moon et al., Comparison of online social relations in volume vs interaction, Proceedings of the 8th ACM SIGCOMM conference on Internet measurement conference, IMC '08, pp.57-70, 2008.
DOI : 10.1145/1452520.1452528

F. R. Chung, Spectral Graph Theory, 1997.
DOI : 10.1090/cbms/092

A. Clauset, Finding local community structure in networks, Physical Review E, vol.72, issue.2, p.26132, 2005.
DOI : 10.1103/PhysRevE.72.026132

A. Clauset, M. E. Newman, and C. Moore, Finding community structure in very large networks, Physical Review E, vol.70, issue.6, pp.1-6, 2004.
DOI : 10.1103/PhysRevE.70.066111

V. Colizza, A. Barrat, M. Barth?abarth?-barth?a-c-lemy, and A. Vespignani, The role of the airline transportation network in the prediction and predictability of global epidemics, Proc. Natl. Acad. Sci. USA, p.2015, 2006.
DOI : 10.1073/pnas.0510525103

S. B. Davidson, S. Khanna, T. Milo, and S. Roy, Using the crowd for top-k and group-by queries, Proceedings of the 16th International Conference on Database Theory, ICDT '13, pp.225-236, 2013.
DOI : 10.1145/2448496.2448524

A. Wouter-de-nooy, V. Mrvar, and . Batagelj, Exploratory Social Network Analysis with Pajek (Structural Analysis in the Social Sciences), 2005.

S. Ithiel-de, M. Pool, and . Kochen, Contacts and influence, Social Networks, vol.1, pp.5-51, 1978.

G. Demartini, P. Difallah, and . Cudré-mauroux, ZenCrowd, Proceedings of the 21st international conference on World Wide Web, WWW '12, pp.469-478, 2012.
DOI : 10.1145/2187836.2187900

G. Demartini, B. Trushkowsky, T. Kraska, and M. J. Franklin, Crowdq : Crowdsourced query understanding, CIDR, 2013.

G. Djellel-eddine-difallah, P. Demartini, and . Cudré-mauroux, Pick-a-crowd : tell me what you like, and i'll tell you what to do, WWW, pp.367-374, 2013.

S. Peter, D. J. Dodds, and . Watts, Universal behavior in a generalized model of contagion, Physical Review Letters, 2004.

C. Dorn, F. Skopik, D. Schall, and S. Dustdar, Interaction mining and skill-dependent recommendations for multi-objective team composition, Data & Knowledge Engineering, vol.70, issue.10, pp.866-891, 2011.
DOI : 10.1016/j.datak.2011.06.004

N. Du, B. Wu, X. Pei, B. Wang, and L. Xu, Community detection in large-scale social networks, Proceedings of the 9th WebKDD and 1st SNA-KDD 2007 workshop on Web mining and social network analysis , WebKDD/SNA-KDD '07, pp.16-25, 2007.
DOI : 10.1145/1348549.1348552

C. Richard, A. K. Dubes, and . Jain, Clustering techniques : The user's dilemma, Pattern Recognition, vol.8, issue.4, pp.247-260, 1976.

R. I. Dunbar, Neocortex size as a constraint on group size in primates, Journal of Human Evolution, vol.22, issue.6, pp.469-493, 1992.
DOI : 10.1016/0047-2484(92)90081-J

R. I. Dunbar, The social brain hypothesis. brain, p.10, 1998.

P. Erdös and A. Rényi, On random graphs i, Publicationes Mathematicae Debrecen, vol.6, p.290, 1959.

P. Erdos and A. Renyi, On the evolution of random graphs, Publ. Math. Inst. Hungary. Acad. Sci, vol.5, pp.17-61, 1960.

M. Faloutsos, P. Faloutsos, and C. Faloutsos, On power-law relationships of the internet topology, Proceedings of the Conference on Applications, Technologies, Architectures, and Protocols for Computer Communication, SIGCOMM '99, pp.251-262, 1999.

L. Fang, H. Kim, K. Lefevre, and A. Tami, A privacy recommendation wizard for users of social networking sites, Proceedings of the 17th ACM conference on Computer and communications security, CCS '10, pp.630-632, 2010.
DOI : 10.1145/1866307.1866378

. Flickr, Techcrunch, 2 billion photos on flickr, 2012.

M. J. Franklin, D. Kossmann, T. Kraska, S. Ramesh, and R. Xin, CrowdDB, Proceedings of the 2011 international conference on Management of data, SIGMOD '11, pp.61-72, 2011.
DOI : 10.1145/1989323.1989331

L. C. Freeman, A Set of Measures of Centrality Based on Betweenness, Sociometry, vol.40, issue.1, pp.35-41, 1977.
DOI : 10.2307/3033543

M. Girolami, Mercer kernel-based clustering in feature space, IEEE Transactions on Neural Networks, vol.13, issue.3, pp.780-784, 2002.
DOI : 10.1109/TNN.2002.1000150

M. Girvan and M. E. Newman, Community structure in social and biological networks, Proceedings of the National Academy of Science, pp.7821-7826, 2002.
DOI : 10.1073/pnas.122653799

J. Goldenberg, B. Libai, and E. Muller, Talk of the Network : A Complex Systems Look at the Underlying Process of Word-of-Mouth, pp.211-223, 2001.

M. Gomez-rodriguez, J. Leskovec, and A. Krause, Inferring networks of diffusion and influence, Proceedings of the 16th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, pp.1019-1028, 2010.

M. Granovetter, Threshold Models of Collective Behavior, American Journal of Sociology, vol.83, issue.6, pp.1420-1443, 1978.
DOI : 10.1086/226707

M. Granovetter, The Strength of Weak Ties, American Journal of Sociology, vol.78, issue.6, pp.1360-1380, 1973.
DOI : 10.1086/225469

R. Gross, Re-identifying facial images, 2005.

R. Gross and A. Acquisti, Information revelation and privacy in online social networks. in workshop on privacy in the electronic society, and modeling and preventing phishing attacks, 2005.

M. Hay, C. Li, G. Miklau, and D. Jensen, Accurate Estimation of the Degree Distribution of Private Networks, 2009 Ninth IEEE International Conference on Data Mining, pp.169-178, 2009.
DOI : 10.1109/ICDM.2009.11

G. Hobgen, Security issues and recommendations for online social networks, 2007.

P. F. Patel-schneider, H. Boley, S. Tabet, B. Grosof, M. Dean et al., Swrl : A semantic web rule language combining owl and ruleml, 2004.

J. Hui, M. D. Greenberg, and E. Gerber, Understanding the role of community in crowdfunding work, Proceedings of the 17th ACM conference on Computer supported cooperative work & social computing, CSCW '14, pp.62-74, 2014.
DOI : 10.1145/2531602.2531715

A. Java, X. Song, T. Finin, and B. Tseng, Why we twitter, Proceedings of the 9th WebKDD and 1st SNA-KDD 2007 workshop on Web mining and social network analysis , WebKDD/SNA-KDD '07, pp.56-65, 2007.
DOI : 10.1145/1348549.1348556

S. Johnson, Hierarchical clustering schemes, Psychometrika, vol.58, issue.4, pp.241-254, 1967.
DOI : 10.1007/BF02289588

R. Kannan, S. Vempala, and A. Vetta, On clusterings, Journal of the ACM, vol.51, issue.3, pp.497-515, 2004.
DOI : 10.1145/990308.990313

B. W. Kernighan and S. Lin, An Efficient Heuristic Procedure for Partitioning Graphs. The Bell Systems Technical Journal, 1970.

A. Kittur, B. Smus, and R. Kraut, Crowdforge : crowdsourcing complex work, CHI Extended Abstracts, pp.1801-1806, 2011.

J. Kleinberg and S. Lawrence, NETWORK ANALYSIS: The Structure of the Web, Science, vol.294, issue.5548, pp.1849-1850, 2001.
DOI : 10.1126/science.1067014

J. M. Kleinberg, Authoritative sources in a hyperlinked environment, Journal of the ACM, vol.46, issue.5, pp.604-632, 1999.
DOI : 10.1145/324133.324140

R. Kumar, J. Novak, and A. Tomkins, Structure and evolution of online social networks, Proceedings of the 12th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, KDD '06, pp.611-617, 2006.

J. Lahtinen, P. Myllymaki, T. Silander, and H. Tirri, Empirical comparison of stochastic algorithms, 1996.

H. C. Martin, A. P. Law, A. K. Topchy, and . Jain, Clustering with soft and group constraints, SSPR/SPR, pp.662-670, 2004.

L. Leenen, T. Anbulagan, A. K. Meyer, and . Ghose, Modeling and Solving Semiring Constraint Satisfaction Problems by Transformation to Weighted Semiring Max-SAT, Australian Conference on Artificial Intelligence, pp.202-212, 2007.
DOI : 10.1007/978-3-540-76928-6_22

L. Leenen, T. A. Meyer, and A. Ghose, Relaxations of semiring constraint satisfaction problems, Information Processing Letters, vol.103, issue.5, pp.177-182, 2007.
DOI : 10.1016/j.ipl.2007.03.011

A. Lenhart and M. Madden, Teens. Teens, privacy & online social networks, 2007.

J. Leskovec, L. Backstrom, R. Kumar, and A. Tomkins, Microscopic evolution of social networks, Proceeding of the 14th ACM SIGKDD international conference on Knowledge discovery and data mining, KDD 08, pp.462-470, 2008.
DOI : 10.1145/1401890.1401948

J. Leskovec and E. Horvitz, Planetary-scale views on a large instant-messaging network, Proceeding of the 17th international conference on World Wide Web , WWW '08, pp.915-924, 2008.
DOI : 10.1145/1367497.1367620

X. Li, B. Liu, and P. S. Yu, Discovering Overlapping Communities of Named Entities
DOI : 10.1007/11871637_60

D. Liben-nowell, J. Novak, R. Kumar, P. Raghavan, and A. Tomkins, Geographic routing in social networks, Proceedings of the National Academy of Sciences, pp.11623-11628, 2005.
DOI : 10.1073/pnas.0503018102

F. Liljeros, C. R. Edling, L. A. Amaral, H. E. Stanley, and Y. Aberg, The web of human sexual contacts, Nature, vol.406, issue.6840, pp.411907-908, 2001.
DOI : 10.1038/35082140

D. López-pintado, J. Duncan, and . Watts, Social Influence, Binary Decisions and Collective Dynamics, Rationality and Society, vol.20, issue.4, 2006.
DOI : 10.1177/1043463108096787

M. Matthew, N. Lucas, and . Borisov, Privacy in electronic commerce and the economics of immediate gratification, 2008.

F. Luo, J. Z. Wang, and E. Promislow, Exploring Local Community Structures in Large Networks, 2006 IEEE/WIC/ACM International Conference on Web Intelligence (WI 2006 Main Conference Proceedings)(WI'06), pp.233-239, 2006.
DOI : 10.1109/WI.2006.72

B. David, J. L. Mackay, and . Zinnes, Reply¨?¿Reply¨?¿ 1 2 considerations in the use of probabilistic multidimensional scaling models, Marketing Science, vol.5, issue.4, pp.348-349, 1986.

J. Macqueen, Some methods for classification and analysis of multivariate observations, Proceedings of the fifth Berkeley symposium on mathematical statistics and probability, p.14, 1967.

A. R. Mahmood, W. G. Aref, E. C. Dragut, and S. Basalamah, The palm-tree index : Indexing with the crowd, DBCrowd, pp.26-31, 2013.

J. W. Mann and G. D. Smith, A comparison of heuristics for telecommunications traffic routing, Modern Heuristic Search Methods, pp.235-254, 1996.

A. Marcus, E. Wu, D. R. Karger, S. Madden, and R. C. Miller, Human-powered sorts and joins, Proceedings of the VLDB Endowment, vol.5, issue.1, pp.13-24, 2011.
DOI : 10.14778/2047485.2047487

URL : http://arxiv.org/abs/1109.6881

A. Marcus, E. Wu, S. Madden, and R. C. Miller, Crowdsourced databases : Query processing with people, CIDR, pp.211-214, 2011.

M. Meila and J. Shi, A random walks view of spectral segmentation, 2001.

S. Milgram, The small world problem, Psychology Today, vol.1, issue.1, pp.61-67, 1967.
DOI : 10.1037/e400002009-005

K. Munshi, Social learning in a heterogeneous population: technology diffusion in the Indian Green Revolution, Journal of Development Economics, vol.73, issue.1
DOI : 10.1016/j.jdeveco.2003.03.003

T. Macushla and M. , Interactive Visualization of Large Graphs and Networks, p.9995264, 2000.

A. Nazir, S. Raza, and C. Chuah, Unveiling facebook, Proceedings of the 8th ACM SIGCOMM conference on Internet measurement conference, IMC '08, pp.43-56, 2008.
DOI : 10.1145/1452520.1452527

M. E. Newman, The structure of scientific collaboration networks, Proceedings of the National Academy of Sciences, vol.98, issue.2, pp.404-409, 2001.
DOI : 10.1073/pnas.98.2.404

M. E. Newman, The Structure and Function of Complex Networks, SIAM Review, vol.45, issue.2, pp.167-256, 2003.
DOI : 10.1137/S003614450342480

M. E. Newman and M. Girvan, Finding and evaluating community structure in networks, Physical Review E, vol.69, issue.2, 2004.
DOI : 10.1103/PhysRevE.69.026113

URL : http://arxiv.org/abs/cond-mat/0308217

M. Newman, A. Barabasi, and D. J. Watts, The Structure and Dynamics of Networks : (Princeton Studies in Complexity ), 2006.

M. E. Newman, Fast algorithm for detecting community structure in networks, Physical Review E, vol.69, issue.6, 2003.
DOI : 10.1103/PhysRevE.69.066133

A. Ng, M. Jordan, and Y. Weiss, On spectral clustering : Analysis and an algorithm, 2001.

L. Page, S. Brin, R. Motwani, and T. Winograd, The pagerank citation ranking : Bringing order to the web, 1998.

G. Palla, Imre Der?ADer? Der?A c nyi, Ill?AIll? Ill?A c s Farkas, and Tam?A¡sTam? Tam?A¡s Vicsek. Uncovering the overlapping community structure of complex networks in nature and society, Nature, issue.7043, pp.435814-818, 2005.

C. R. Palmer, P. B. Gibbons, and C. Faloutsos, ANF, Proceedings of the eighth ACM SIGKDD international conference on Knowledge discovery and data mining , KDD '02, pp.81-90, 2002.
DOI : 10.1145/775047.775059

R. Pastor-satorras and A. Vespignani, Epidemic Spreading in Scale-Free Networks, Physical Review Letters, vol.86, issue.14, pp.3200-3203, 2001.
DOI : 10.1103/PhysRevLett.86.3200

A. Pothen, H. D. Simon, and K. Liou, Partitioning Sparse Matrices with Eigenvectors of Graphs, SIAM Journal on Matrix Analysis and Applications, vol.11, issue.3, pp.430-452, 1990.
DOI : 10.1137/0611030

L. Hall, P. Hore, and D. Goldgof, A clustering ensemble framework for large data sets, Systems, Man and Cybernetics SMC '06. IEEE International Conference on, 2006.

D. Quercia, G. D. Lorenzo, F. Calabrese, and C. Ratti, Mobile Phones and Outdoor Advertising: Measurable Advertising, IEEE Pervasive Computing, vol.10, issue.2, pp.28-36, 2011.
DOI : 10.1109/MPRV.2011.15

URL : http://hdl.handle.net/1721.1/64448

M. Richardson and P. Domingos, Mining knowledge-sharing sites for viral marketing, Proceedings of the eighth ACM SIGKDD international conference on Knowledge discovery and data mining , KDD '02, pp.61-70, 2002.
DOI : 10.1145/775047.775057

D. Rosenblum, What Anyone Can Know: The Privacy Risks of Social Networking Sites, IEEE Security & Privacy Magazine, vol.5, issue.3, 2007.
DOI : 10.1109/MSP.2007.75

F. Rossi, K. B. Venable, and T. Walsh, Preferences in constraint satisfaction and optimization, AI Magazine, vol.29, issue.4, pp.58-68, 2008.

I. Senjuti-basu-roy, S. Lykourentzou, and . Thirumuruganathan, Sihem Amer-Yahia, and Gautam Das. Optimization in knowledge-intensive crowdsourcing, 1302.

K. Tang, S. Guha, and P. Francis, Privacy in electronic commerce and the economics of immediate gratification, 2008.

S. Scellato, "Beyond the social web: the geo-social revolution" by Salvatore Scellato with Ching-man Au Yeung as Coordinator, ACM SIGWEB Newsletter, vol.5, issue.Autumn, pp.1-5, 2011.
DOI : 10.1145/2020936.2020941

D. Schaffer and L. Eshelman, Combinatorial optimization by genetic algorithms : The value of the genotype/phenotype distinction, Proceedings of the Conference on Applied Decision Technologies (ADT'95)

T. Schelling, Dynamic models of segregation???, The Journal of Mathematical Sociology, vol.1, issue.2, pp.143-186, 1971.
DOI : 10.2307/213133

R. Schifanella, A. Panisson, C. Gena, and G. Ruffo, MobHinter, Proceedings of the 2008 ACM conference on Recommender systems, RecSys '08, pp.27-34, 2008.
DOI : 10.1145/1454008.1454014

J. Shi and J. Malik, Normalized cuts and image segmentation, IEEE Trans. Pattern Anal. Mach. Intell, vol.22, issue.8, pp.888-905, 2000.

G. Siganos, S. L. Tauro, and M. Faloutsos, Jellyfish: A conceptual model for the as Internet topology, Journal of Communications and Networks, vol.8, issue.3, pp.339-350, 2006.
DOI : 10.1109/JCN.2006.6182774

F. Skopik, D. Schall, H. Psaier, M. Treiber, and S. Dustdar, Towards social crowd environments using serviceoriented architectures. it -Information Technology, pp.108-116, 2011.

N. Talukder, M. Ouzzani, A. K. Elmagarmid, H. Elmeleegy, and M. Yakout, Privometer: Privacy protection in social networks, 2010 IEEE 26th International Conference on Data Engineering Workshops (ICDEW 2010), pp.266-269, 2010.
DOI : 10.1109/ICDEW.2010.5452715

H. Trottier and P. Philippe, Deterministic Modeling Of Infectious Diseases : Theory And Methods, The Internet Journal of Infectious Diseases, vol.1, 2001.

J. Ugander, B. Karrer, L. Backstrom, and C. Marlow, The anatomy of the facebook social graph. CoRR, abs/1111, 2011.

D. Verma and M. Meila, A comparison of spectral clustering algorithms, 2003.

K. Wakita and T. Tsurumi, Finding community structure in mega-scale social networks, Proceedings of the 16th international conference on World Wide Web , WWW '07, pp.1275-1276, 2007.
DOI : 10.1145/1242572.1242805

J. Wang, T. Kraska, M. J. Franklin, and J. Feng, CrowdER, Proc. VLDB Endow, pp.1483-1494, 2012.
DOI : 10.14778/2350229.2350263

S. Wasserman and K. Faust, Social network analysis : methods and applications, 1994.
DOI : 10.1017/CBO9780511815478

D. J. Watts and S. H. Strogatz, Collective dynamics of 'small-world' networks, Nature, issue.393, pp.440-442, 1998.

T. Weise, Global Optimization Algorithms -Theory and Application . Self-Published, second edition, 2009.

J. Hendler, T. Berners-lee, D. Connolly, and D. J. Weitzner, Creating a policyaware web ;discretionay, rule-based avvess for the word wid web, 2006.

C. Wilson, B. Boe, A. Sala, K. P. Puttaswamy, and B. Y. Zhao, User interactions in social networks and their implications, Proceedings of the fourth ACM european conference on Computer systems, EuroSys '09, pp.205-218, 2009.
DOI : 10.1145/1519065.1519089

R. Xiang, J. Neville, and M. Rogati, Modeling relationship strength in online social networks, Proceedings of the 19th international conference on World wide web, WWW '10, pp.981-990, 2010.
DOI : 10.1145/1772690.1772790

J. Xu and H. Chen, The topology of dark networks, Communications of the ACM, vol.51, issue.10, pp.58-65, 2008.
DOI : 10.1145/1400181.1400198

T. Yan, V. Kumar, and D. Ganesan, CrowdSearch, Proceedings of the 8th international conference on Mobile systems, applications, and services, MobiSys '10, pp.77-90, 2010.
DOI : 10.1145/1814433.1814443

H. , P. Young, J. Epstein, E. Gallo, J. Heckman et al., Innovation diffusion in heterogeneous populations : Contagion, social influence, and social learning

W. W. Zachary, An Information Flow Model for Conflict and Fission in Small Groups, Journal of Anthropological Research, vol.33, issue.4, pp.452-473, 1977.
DOI : 10.1086/jar.33.4.3629752