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Emergent Routines in Peer-Production: Examining the Temporal Evolution of Wikipedia's Work Sequences

Published: 08 February 2020 Publication History

Abstract

Current theories struggle to explain how participants in peer-production self-organize to produce high-quality knowledge in the absence of formal coordination mechanisms. The literature traditionally holds that norms, policies, and roles make coordination possible. However, peer-production is largely free from workflow constraints and most peer-production communities do not allocate or assign tasks. Yet, scholars have suggested that ordered work sequences can emerge in such settings. We refer to sequences of activities that emerge organically as components of “emergent routines.” The volunteer nature of peer-production, coupled with high degrees of turnover, makes learning and coordination difficult, calling into question the extent to which emergent routines could be ingrained in the community. The objective of this article is to characterize the work sequences that organically emerge in peer-production, as well as to understand the temporal dynamics of these emergent routine components. We center our empirical investigation on the peer-production of a set of 1,000 Wikipedia articles. Using a dataset of labeled wiki work, we employ Variable-Length Markov Chains (VLMC) to identify sequences of activities exhibiting structural dependence, cluster the sequences to identify components of emergent routines, and then track their prevalence over time. We find that work is organized according to several routine components, and that the prevalence of these components changes over time.

References

[1]
A. Aaltonen and G. F. Lanzara. 2015. Building governance capability in online social production: Insights from Wikipedia. Organization Studies 36, 12 (2015), 1649--1673.
[2]
A. Abbott and A. Tsay. 2000. Sequence analysis and optimal matching methods in sociology: Review and prospect. Sociological Methods 8 Research 29, 1 (2000), 3--33.
[3]
B. Adler, L. De Alfaro, S. Mola-velasco, P. Rosso, and A. West. 2011. Wikipedia vandalism detection: Combining natural language, metadata, and reputation features. Computational Linguistics and Intelligent Text Processing, 277--288.
[4]
H. E. Aldrich and M. Ruef. 2006. Organizations Evolving. Sage Publ.
[5]
O. Arazy, H. Brausen, D. Turner, A. Balila, E. Stroulia, and J. Lanir. 2015. coDNA: Visualizing peer production processes. In Proceedings of the 18th ACM Conference Companion on Computer Supported Cooperative Work 8 Social Computing ACM, 5--8.
[6]
O. Arazy and A. Croitoru. 2010. The sustainability of corporate wikis: A time-series analysis of activity patterns. ACM Transactions on Management Information Systems (TMIS) 1, 1 (2010), 6.
[7]
O. Arazy, J. Daxenberger, H. Lifshitz-Assaf, O. Nov, and I. Gurevych. 2016. Turbulent stability of emergent roles: The dualistic nature of self-organizing knowledge co-production. Information Systems Research 27, 4 (2016), 792--812.
[8]
O. Arazy, H. Lifshitz-Assaf, O. Nov, J. Daxenberger, M. Balestra, and C. Cheshire. 2017. On the how and why of temporal dynamics of emergent roles in Wikipedia. In 20th Conference on Computer-Supported Cooperative Work and Social Computing (CSCW 2017), Portland, OR.
[9]
O. Arazy, H. Lifshitz‐Assaf, and A. Balila. 2019. Neither a bazaar nor a cathedral: The interplay between structure and agency in Wikipedia's role system. Journal of the Association for Information Science and Technology 70, 1 (2019), 3--15.
[10]
O. Arazy, A. Lindberg, M. Rezaei, and M. Samorani. Forthcoming. The Evolutionary Trajectories of Peer-Produced Artifacts: Group Composition, the Trajectories’ Exploration, and the Quality of Artifacts. Management Information Systems Quarterly (MISQ).
[11]
O. Arazy, O. Nov, R. Patterson, and L. Yeo. 2011. Information quality in Wikipedia: The effects of group composition and task conflict. Journal of Management Information Systems 27, 4 (2011), 71--98.
[12]
J. Aroles and C. Mclean. 2016. Rethinking stability and change in the study of organizational routines: Difference and repetition in a newspaper-printing factory. Organization Science 27, 3 (2016), 535--550.
[13]
M. C. Becker. 2008. Handbook of Organizational Routines. Edward Elgar Publishing.
[14]
R. Begleiter, R. El-yaniv, and G. Yona. 2004. On prediction using variable order markov models. Journal of Artificial Intelligence Research 22, 385--421.
[15]
Y. Benkler. 2002. Coase's penguin, or, linux and the nature of the firm. Yale Law Journal 112, 3 (2002), 367--445.
[16]
Y. Benkler. 2006. The Wealth of Networks: How Social Production Transforms Markets and Freedom. Yale University Press.
[17]
F. Bolici, J. Howison, and K. Crowston. 2016. Stigmergic coordination in FLOSS development teams: Integrating explicit and implicit mechanisms. Cognitive Systems Research 38, 14--22.
[18]
P. Bühlmann and A. J. Wyner. 1999. Variable length Markov chains. The Annals of Statistics 27, 2 (1999), 480--513.
[19]
B. Choi, K. Alexander, R. E. Kraut, and J. M. Levine. 2010. Socialization tactics in Wikipedia and their effects. In Proceedings of CSCW, 107--116.
[20]
R. H. Coase. 1937. The nature of the firm. Economica 4, 16 (1937), 386--405.
[21]
K. Crowston, K. Wei, J. Howison, and A. Wiggins. 2012. Free/Libre open-source software development: What we know and what we do not know. ACM Computing Surveys 44, 2 (2012), 7.
[22]
R. M. Cyert and J. G. March. 1963. A behavioral theory of the firm. Englewood Cliffs, NJ 2.
[23]
L. D'adderio. 2008. The performativity of routines: Theorising the influence of artefacts and distributed agencies on routines dynamics. Research Policy 37, 5 (2008), 769--789.
[24]
L. D'adderio. 2014. The replication dilemma unravelled: How organizations enact multiple goals in routine transfer. Organization Science 25, 5 (2014), 1325--1350.
[25]
J. Daxenberger and I. Gurevych. 2013. Automatically classifying edit categories in Wikipedia revisions. In Proceedings of the Conference on Empirical Methods in Natural Language Processing, Seattle, WA, 578--589.
[26]
W. H. Day and H. Edelsbrunner. 1984. Efficient algorithms for agglomerative hierarchical clustering methods. Journal of Classification 1, 1 (1984), 7--24.
[27]
S. Dedeo. 2016. Conflict and computation on Wikipedia: A finite-state machine analysis of editor interactions. Future Internet 8, 3 (2016), 31.
[28]
C. Domeniconi and M. Al-razgan. 2009. Weighted cluster ensembles: Methods and analysis. ACM Transactions on Knowledge Discovery from Data (TKDD) 2, 4 (2009), 17.
[29]
G. Dosi, M. Faillo, and L. Marengo. 2008. Organizational capabilities, patterns of knowledge accumulation and governance structures in business firms: An introduction. Organization Studies 29, 8-9, 1165--1185.
[30]
S. Faraj, S. L. Jarvenpaa, and A. Majchrzak. 2011. Knowledge collaboration in online communities. Organization Science 22, 5 (2011), 1224--1239.
[31]
M. S. Feldman and B. T. Pentland. 2003. Reconceptualizing organizational routines as a source of flexibility and change. Administrative Science Quarterly 48, 1 (2003), 94--118.
[32]
J. Feller, P. Finnegan, B. Fitzgerald, and J. Hayes. 2008. From peer production to productization: A study of socially enabled business exchanges in open source service networks. Information Systems Research 19, 4 (2008), 475--493.
[33]
A. Forte, V. Larco, and A. Bruckman. 2009. Decentralization in Wikipedia governance. Journal of Management Information Systems 26, 1 (2009), 49--72.
[34]
A. Gabadinho and G. Ritschard. 2016. Analyzing state sequences with probabilistic suffix trees: The PST R package. Journal of Statistical Software 72, 3 (2016), 1--39.
[35]
A. Gabadinho, G. Ritschard, N. S. Mueller, and M. Studer. 2011. Analyzing and visualizing state sequences in R with TraMineR. Journal of Statistical Software 40, 4 (2011), 1--37.
[36]
J. Gaskin, N. Berente, K. Lyytinen, and Y. Yoo. 2014. Toward generalizable sociomaterial inquiry: A computational approach for zooming in and out of sociomaterial routines. MIS Quarterly 38, 3 (2014), 849--871.
[37]
R. S. Geiger, A. Halfaker, M. Pinchuk, and S. Walling. 2012. Defense mechanism or socialization tactic? Improving Wikipedia's notifications to rejected contributors. In Proceedings of the 6th International AAAI Conference on Weblogs and Social Media.
[38]
R. S. Geiger and D. Ribes. 2010. The work of sustaining order in wikipedia: the banning of a vandal. In Proceedings of the 2010 ACM Conference on Computer Supported Cooperative Work. ACM, 117--126.
[39]
A. Halfaker and J. Riedl. 2012. Bots and cyborgs: Wikipedia's immune system. Computer 45, 3 (2012), 79--82.
[40]
F. Heylighen. 2007. Accelerating socio-technological evolution. Globalization as Evolutionary Process: Modeling Global Change, 284.
[41]
B. M. Hill and A. Shaw. 2015. Page protection: Another missing dimension of Wikipedia research. In Proceedings of the 11th International Symposium on Open Collaboration ACM, 15.
[42]
S. Holm. 1979. A simple sequentially rejective multiple test procedure. Scandinavian Journal of Statistics 6, 2 (1979), 65--70.
[43]
S. Javanmardi, D. W. McDonald, and C. V. Lopes. 2011. Vandalism detection in Wikipedia: A high-performing, feature-rich model and its reduction through Lasso. In Proceedings of the 7th International Symposium on Wikis and Open Collaboration ACM, 82--90.
[44]
D. Jurgens and T.-C. Lu. 2012. Temporal motifs reveal the dynamics of editor interactions in Wikipedia. In ICWSM.
[45]
G. C. Kane, J. Johnson, and A. Majchrzak. 2014. Emergent life cycle: The tension between knowledge change and knowledge retention in open online coproduction communities. Management Science 60, 12 (2014), 3026--3048.
[46]
B. Keegan, D. Gergle, and N. Contractor. 2012. Do editors or articles drive collaboration?: Multilevel statistical network analysis of Wikipedia coauthorship. In Proceedings of the ACM 2012 Conference on Computer Supported Cooperative Work (CSCW) ACM, Seattle, WA, 427--436.
[47]
B. C. Keegan, S. Lev, and O. Arazy. 2016. Analyzing organizational routines in online knowledge collaborations: A case for sequence analysis in CSCW. In Proceedings of the 19th ACM Conference on Computer-Supported Cooperative Work 8 Social Computing ACM, 1065--1079.
[48]
A. Kittur and R. Kraut. 2008. Harnessing the wisdom of crowds in wikipedia: quality through coordination. In ACM Conference on Computer Supported Cooperative Work ACM, 37--46.
[49]
P. Klarner and S. Raisch. 2013. Move to the beat—Rhythms of change and firm performance. Academy of Management Journal 56, 1 (2013), 160--184.
[50]
R. Kohavi. 1995. A study of cross-validation and bootstrap for accuracy estimation and model selection. In Ijcai Montreal, Canada, 1137--1145.
[51]
T. Kriplean, I. Beschastnikh, and D. W. Mcdonald. 2008. Articulations of wikiwork: Uncovering valued work in wikipedia through barnstars. In Proceedings of the 2008 ACM Conference on Computer Supported Cooperative Work ACM, San Diego, CA, 47--56.
[52]
K. R. Lakhani and E. Von Hippel. 2003. How open source software works: “free” user-to-user assistance. Research Policy 32, 6 (2003), 923--943.
[53]
G. K. Lee and R. E. Cole. 2003. From a firm-based to a community-based model of knowledge creation: The case of the linux kernel development. Organization Science 14, 6 (2003), 6-33-649.
[54]
R. A. Lerman. 1992. Nonlinear System Dynamics. Springer.
[55]
J. Lerner, M. Bussmann, T. A. Snijders, and U. Brandes. 2013. Modeling frequency and type of interaction in event networks. Corvinus Journal of Sociology and Social Policy 1, 3--32.
[56]
J. Lerner and A. Lomi. 2017. The third man: Hierarchy formation in Wikipedia. Applied Network Science 2, 1 (2017), 24.
[57]
B. Leuf and W. Cunningham. 2001. The Wiki Way: Quick Collaboration on the Web. Addison-Wesley Professional, Boston, MA.
[58]
A. Lindberg. Forthcoming. Developing Theory through Integrating Human 8 Machine Pattern Recognition. Journal of the Association for Information Systems.
[59]
A. Lindberg, N. Berente, J. Gaskin, and K. Lyytinen. 2016. Coordinating interdependencies in online communities: A study of an open source software project. Information Systems Research 27, 4 (2016), 751--772.
[60]
M. Mächler and P. Bühlmann. 2004. Variable length markov chains: Methodology, computing and software. Journal of Computational and Graphical Statistics 13, 2 (2004), 435--455.
[61]
A. Majchrzak. 2009. Comment: Where is the theory in wikis? MIS Quarterly 33, 1 (2009), 18--20.
[62]
A. Majchrzak, C. Wagner, and D. Yates. 2013. The impact of shaping on knowledge reuse for organizational improvement with wikis. MIS Quarterly 37, 2 (2013), 455--469.
[63]
J. G. March and H. A. Simon. 1993. Organizations (2nd ed.). Blackwell Business/Blackwell Publishers.
[64]
A. S. Miner, M. P. Ciuchta, and Y. Gong. 2008. Organizational routines and organizational learning. Handbook of Organizational Routines 152.
[65]
H. Mintzberg. 1992. Structure in Fives: Designing Effective Organizations. Prentice Hall, Upper Saddle River, NJ.
[66]
E. Monteiro, T. Østerlie, K. H. Rolland, and E. Røyrvik. 2004. Keeping it going: The everyday practices of open source software. Norwegian University of Science and Technology (NTNU).
[67]
J. T. Morgan, S. Bouterse, H. Walls, and S. Stierch. 2013. Tea and sympathy: Crafting positive new user experiences on wikipedia. In Proceedings of the 2013 Conference on Computer Supported Cooperative Work. ACM, 839--848.
[68]
A. Nakamura, Y. Suzuki, and Y. Ishikawa. 2013. Clustering editors of Wikipedia by editor's biases. In IEEE/WIC/ACM International Joint Conferences on Web Intelligence (WI) and Intelligent Agent Technologies (IAT) IEEE, 351--358.
[69]
R. R. Nelson and S. G. Winter. 1982. An Evolutionary Theory of Economic Change. Harvard University Press.
[70]
R. R. Nelson and S. G. Winter. 1982. An Evolutionary Theory of Economic Change. Belknap Press/Harvard University Press, Cambridge.
[71]
B. Pentland, T. Haerem, and D. Hillison. 2010. Comparing organizational routines as recurrent patterns of action. Organization Studies 31, 7 (2010), 917--940.
[72]
B. T. Pentland. 1995. Grammatical models of organizational processes. Organization Science 6, 5 (1995), 541--556.
[73]
B. T. Pentland and M. S. Feldman. 2008. Designing routines: On the folly of designing artifacts, while hoping for patterns of action. Information and Organization 18, 4 (2008), 235--250.
[74]
B. T. Pentland, M. S. Feldman, M. C. Becker, and P. Liu. 2012. Dynamics of organizational routines: A generative model. Journal of Management Studies 49, 8 (2012), 1484--1508.
[75]
B. T. Pentland, T. Hærem, and D. Hillison. 2011. The ever-changing world: Stability and change in organizational routines. Organization Science 22, 6 (2011), 1369--1383.
[76]
B. T. Pentland and H. H. Rueter. 1994. Organizational routines as grammars of action. Administrative Science Quarterly, 484--510.
[77]
C. Pentzold. 2018. Grounding peer production in practice: Editorial routines and everyday engagement in the “free encyclopedia anyone can edit”. Communication, Culture and Critique.
[78]
P. Puranam, O. Alexy, and M. Reitzig. 2014. What's ”new„ about new forms of organizing? Academy of Management Review 39, 2 (2014), 162--180.
[79]
S. Ransbotham and G. C. Kane. 2011. Membership turnover and collaboration success in online communities: Explaining rises and falls from grace in wikipedia. MIS Quarterly 35, 3 (2011), 613--627.
[80]
C. Rerup and M. S. Feldman. 2011. Routines as a source of change in organizational schemata: The role of trial-and-error learning. Academy of Management Journal 54, 3 (2011), 577--610.
[81]
D. Ron, Y. Singer, and N. Tishby. 1996. The power of amnesia: Learning probabilistic automata with variable memory length. Machine Learning 149, 117--149.
[82]
R. Sabherwal and D. Robey. 1993. An empirical taxonomy of implementation processes based on sequences of events in information system development. Organization Science 4, 4 (1993), 548--576.
[83]
A. Sarabadani, A. Halfaker, and D. Taraborelli. 2017. Building automated vandalism detection tools for wikidata. In Proceedings of the 26th International Conference on World Wide Web Companion. International World Wide Web Conferences Steering Committee, 1647--1654.
[84]
T. Schatzki. 2013. The edge of change: On the emergence, persistence and dissolution of practices. In Sustainable Practices Routledge, 47--62.
[85]
T. R. Schatzki. 2006. On organizations as they happen. Organization Studies 27, 12 (2006), 1863--1873.
[86]
H. Sepehri Rad, A. Makazhanov, D. Rafiei, and D. Barbosa. 2012. Leveraging editor collaboration patterns in Wikipedia. In Proceedings of the 23rd ACM Conference on Hypertext and Social Media ACM, 13--22.
[87]
M. Studer. 2013. Weightedcluster library manual: A practical guide to creating typologies of trajectories in the social sciences with R. In LIVES Working Papers.
[88]
T. Susi. 2016. Social cognition, artefacts, and stigmergy revisited: Concepts of coordination. Cognitive Systems Research 38, 41--49.
[89]
T. Susi and T. Ziemke. 2001. Social cognition, artefacts, and stigmergy: A comparative analysis of theoretical frameworks for the understanding of artefact-mediated collaborative activity. Cognitive Systems Research 2, 4 (2001), 273--290.
[90]
S. Um, Y. Yoo, S. Wattal, R. Kulathinal, and B. Zhang. working paper. The Generative Architecture of a Digital Ecosystem: A Network Perspective.
[91]
F. B. Viégas, M. Wattenberg, and K. Dave. 2004. Studying cooperation and conflict between authors with history flow visualizations. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems ACM, 575--582.
[92]
F. B. Viégas, M. Wattenberg, and M. M. Mckeon. 2007. The hidden order of Wikipedia. In International Conference on Online Communities and Social Computing Springer, 445--454.
[93]
G. Von Krogh and E. Von Hippel. 2006. The promise of research on open source software. Management Science 52, 7 (2006), 975--983.
[94]
C. Wagner. 2004. Wiki: A technology for conversational knowledge management and group collaboration. Communication of the Association for Information Systems 13, 265--289.
[95]
C. Wagner and A. Majchrzak. 2007. Enabling customer-centricity using wikis and the wiki way. Journal of Management Information Systems 23, 3 (2007), 17--43.
[96]
J. H. Ward JR. 1963. Hierarchical grouping to optimize an objective function. Journal of the American Statistical Association 58, 301 (1963), 236--244.
[97]
M. Wattenberg, F. B. Viégas, and K. Hollenbach. 2007. Visualizing activity on wikipedia with chromograms. In IFIP Conference on Human-Computer Interaction Springer, 272--287.
[98]
S. Winter, N. Berente, J. Howison, and B. Butler. 2014. Beyond the organizational ‘container’: Conceptualizing 21st century sociotechnical work. Information and Organization 24, 4 (2014), 250--269.
[99]
K. Wongsuphasawat, J. A. Guerra Gómez, C. Plaisant, T. D. Wang, M. Taieb-maimon, and B. Shneiderman. 2011. LifeFlow: Visualizing an overview of event sequences. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems ACM, 1747--1756.
[100]
Q. Wu, D. Irani, C. Pu, and L. Ramaswamy. 2010. Elusive vandalism detection in wikipedia: A text stability-based approach. In Proceedings of the 19th ACM International Conference on Information and Knowledge Management ACM, 1797--1800.
[101]
X. Xiao, A. Lindberg, S. Hansen, and K. Lyytinen. 2018. “Computing” requirements for open source software: A distributed cognitive approach. Journal of the Association for Information Systems 19, 12 (2018), 1217--1252.
[102]
D. Yates, C. Wagner, and A. Majchrzak. 2010. Factors affecting shapers of organizational wikis. Journal of the American Society for Information Science and Technology 61, 3 (2010), 543--554.
[103]
Y. Yoo. 2012. Digital materiality and the emergence of an evolutionary science of the artificial. Materiality and Organizing: Social Interaction in a Technological World, 134--154.
[104]
H. Zhang, Y. Ren, and R. E. Kraut. 2018. Mining and predicting temporal patterns in the quality evolution of Wikipedia articles. In Academy of Management Proceedings Academy of Management Briarcliff Manor, NY 10510.
[105]
Z. Zhang, R. Kulathinal, S. Wattal, and Y. Yoo. 2012. Generative diffusion of innovations: An organizational genetics approach. In Proceedings of the International Conference on Information Systems (ICIS), Orlando, FL.

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cover image ACM Transactions on Social Computing
ACM Transactions on Social Computing  Volume 3, Issue 1
Special Issue on Negotiating Truth and Trust in Socio-Technical Systems and Regular Paper
March 2020
101 pages
EISSN:2469-7826
DOI:10.1145/3382761
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Published: 08 February 2020
Accepted: 01 October 2019
Revised: 01 September 2019
Received: 01 November 2018
Published in TSC Volume 3, Issue 1

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  1. Peer-production
  2. Wikipedia
  3. emergent routine components
  4. online communities
  5. routines
  6. temporal dynamics
  7. variable length Markov chains (VLMC)

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