Publications

2014

Michael Muller, Werner Geyer, Todd Soule, John Wafer. 2014. Geographical and Organizational Distances in Enterprise Crowdfunding. In Proc ACM CSCW’14, Baltimore, MD, Februray 2014

N. Sadat Shami, Jiang Yang, Laura Panc, Casey Dugan, Tristan Ratchford, Jamie C Rasmussen, Yannick M Assogba, Tal Steier, Todd Soule, Stela Lupushor, Werner Geyer, Ido Guy, Jonathan Ferrar. 2014. Understanding Employee Social Media Chatter with Enterprise Social Pulse. In Proc ACM CSCW’14. Baltimore, MD, February 2014.

2013

Tak Yeon Lee, Casey Dugan, Werner Geyer, Tristan Ratchford, Jamie Rasmussen, N. Sadat Shami, Stela Lupushor. 2013. Experiments on Motivational Feedback for Crowdsourced Workers. In Proc. ICWSM’13. AAAI Conference on Weblogs and Social Media, Boston, MA, July 2013. [PDF]

Michael Muller, Werner Geyer, Todd Soule, Steven Daniels. 2014.Grassroots Innovation and Collaboration through Enterprise Crowdfunding. In Proc of ICWSM’14 Workshop on Social Computing for Workforce 2.0, Boston, MA, July 2013. [Workshop Site]

Muller, M., Geyer, W., Soule, T., Daniels, S., and Cheng, L. Crowdfunding inside the Enterprise: Employee-Initiatives for Innovation and Collaboration. In: Proc CHI’13, ACM, New York, NY, USA. [PDF]

2012

Dugan, C. Geyer, W., Muller, M., Valente, A. N., James, K., Levy, S., Cheng, L., Daly, E., and Brownholtz, B. 2012. “I’d never get out of this !?$%# office:” redesigning time management for the enterprise. In Proc CHI ’12. ACM, New York, NY, USA, 1755-1764. [PDF]

2011

Daly, E., Geyer, W. 2011. Effective event discovery: using location and social information for scoping event recommendations. In Proc RecSys ’11. ACM, New York, NY, USA, 277-280. [PDF]

Geyer, W., Dugan, C., Brownholtz, B., Masli, M., Daly, E., Millen, D.R. 2011. An Open, Social Microcalendar for the Enterprise: Timely? In Proc CHI’11. ACM, New Ypork, NY, USA. [PDF]

Masli, M., Geyer, W., Dugan, C., Brownholtz, B. 2011. The Design and Usage of Tentative Events for Time-based Social Coordination in the Enterprise. To appear: Proc WWW’11. [PDF]

2010

Freyne, J., Berkovsky, S., Daly, E., Geyer, W. 2010. Social networking feeds: recommending items of interest. Proc ACM RecSys ’10. ACM, New York, NY, USA, 277-280. [PDF]

Daly, E., Geyer, W., Millen, D.R. 2010. The network effects of recommending social connections. Proc ACM RecSys ’10. ACM, New York, NY, USA, 301-304. [PDF]
Best Paper Award

Ahn, H., Geyer, W., Dugan, C., Millen, D.R. “How Incredibly Awesome!” — Click Here to Read More. Proc ICWSM’10, Washington, DC, May 23 – 26, 2010,
AAAI Press,Menlo Park, CA. [PDF]

Dugan, C., Geyer, W., Millen, David R. 2010. Lessons Learned from Blog Muse: Audience-based Inspiration for Bloggers. Proc CHI’10. ACM, New York, NY. [PDF]

Geyer, W., Dugan, C. 2010. Inspired by the Audience – A Topic Suggestion System for Blog Writers and Readers. Proc CSCW’10. ACM, New York, NY. [PDF]

2009

Freyne, J., Jacovi, M., Guy, I., and Geyer, W. 2009. Increasing engagement through early recommender intervention. In Proc RecSys ’09. ACM, New York, NY, 85-92.

Chen, J., Geyer, W., Dugan, C., Muller, M., Guy, I. 2009. “Make New Friends, but Keep the Old” – Recommending People on Social Networking Sites. In Proc CHI’09. ACM, New York, NY. [PDF]

DiMicco, J., Geyer, W., Dugan, C. 2009. Understanding the Benefits of Social Networking within the Workplace. Workshop Paper CHI’09.

Dugan. C., Geyer, W. DiMicco, J. 2009. 3 Parts Inspiration-3 Parts Participation. Workshop Paper CHI’09.

DiMicco, J., Geyer, W., Dugan, C., Brownholtz, B., Millen, D.R. 2009. People Sensemaking and Relationship Building on an Enterprise Social Networking Site. In Proc HICSS ’09.

2008

DiMicco, J., Millen, D. R., Geyer, W., Dugan, C., Brownholtz, B., and Muller, M. 2008. Motivations for social networking at work. In Proc CSCW’08. ACM, New York, NY, 711-720.

Geyer, W., Dugan, C., Millen, D. R., Muller, M., and Freyne, J. 2008. Recommending topics for self-descriptions in online user profiles. In Proc RecSys ’08. ACM, New York, NY, 59-66.

Vatturi, P. K., Geyer, W., Dugan, C., Muller, M., and Brownholtz, B. 2008. Tag-based filtering for personalized bookmark recommendations. In Proc CIKM’08. ACM, New York, NY, 1395-1396.

Dugan, C., Geyer, W., Muller, M., DiMicco, J., Brownholtz, B., and Millen, D. R. 2008. It’s all ‘about you': diversity in online profiles. In Proc CSCW’08. ACM, New York, NY, 703-706.

Geyer, W., Dugan, C., DiMicco, J., Millen, D. R., Brownholtz, B., and Muller, M. 2008. Use and reuse of shared lists as a social content type. In Proc CHI’08. ACM, New York, NY, 1545-1554.

Farzan, R., DiMicco, J., Millen, D. R., Dugan, C., Geyer, W., and Brownholtz, E. 2008. Results from deploying a participation incentive mechanism within the enterprise. In Proc CHI ’08. ACM, New York, NY, 563-572.

Shen, J., Geyer, W., Muller, M., Dugan, C., Brownholtz, B., and Millen, D. R. 2008. Automatically finding and recommending resources to support knowledge workers’ activities. In Proc IUI ’08. ACM, New York, NY, 207-216.

Geyer, W., Silva Fihlo, R., Brownholtz, B., Redmiles, D.F. 2008. The Trade-Offs of Blending Synchronous and Asynchronous Communication Services to Support Contextual Collaboration. Journal of Universal Computer Science (J.UCS), Vol. 14, Issue 1, January 1, 2008, 4-26.

2007

Dugan, C., Muller, M., Millen, D. R., Geyer, W., Brownholtz, B., and Moore, M. 2007. The dogear game: a social bookmark recommender system. In Proc GROUP ’07. ACM, New York, NY, 387-390.

Li, L., Muller, M. J., Geyer, W., Dugan, C., Brownholtz, B., and Millen, D. R. 2007. Predicting individual priorities of shared activities using support vector machines. In Proc CIKM ’07. ACM, New York, NY, 515-524.

Muller, M.J., Geyer, W., Brownholtz, B., Dugan, C., Millen, D.R., and Wilcox, E. 2007. Tag-Based Metonymic Search in an Activity-Centric Aggregation Service. Proc ECSCW 2007, Limerick, Ireland, September 2007.

Geyer, W., Brownholtz, B., Muller, M., Dugan, C., Wilcox, E., and Millen, D. R. 2007. Malibu personal productivity assistant. In CHI ’07 Extended Abstracts. ACM, New York, NY, 2375-2380.

2006

Geyer, W., Muller, M., Moore, M., Wilcox, E., Cheng, L., Brownholtz, B., Hill, C.R., Millen, D.R. 2006. ActivityExplorer: Activity-Centric Collaboration from Research to Product. IBM Systems Journal – Issue on Business Collaboration, Vol. 45, Number 4, 2006, 713-739.

Sen, S., Geyer, W., Muller, M., Moore, M., Brownholtz, B., Wilcox, E., and Millen, D. R. 2006. FeedMe: a collaborative alert filtering system. In Proc CSCW ’06. ACM, New York, NY, 89-98.

2005

Geyer, W., Richter, H., Abowd, G. 2005. Towards a Smarter Meeting Record – Capture and Access of Meetings Revisited. Journal on Multimedia Tools and Applications, Volume 27, Number 3 / December 2005, Springer Netherlands, 393-410.

Geyer, W., Vogel, J., Cheng, L., Muller, M. 2005. Personal Peer-to-Peer Collaboration based on Shared Objects. Peer to Peer Computing: The Evolution of a Disruptive Technology, edited by Dr. Ramesh Subramanian and Dr. Brian Goodman, IDEA Group Inc.

Muller, Michael J., Minassian, Suzanne O., Geyer, Werner, Millen, David R, Brownholtz, Elizabeth, and Wilcox, E. 2005. Studying Appropriation in Activity-Centric Collaboration. Position paper at ECSCW 2005 workshop on “Supporting Articulation Work: Approaches for the reflective user”. In: International Reports on Socio-Informatics, Volume 2, Issue 2, 2005, IISI – International Institute for Socio-Informatics.

Millen, D. R., Muller, M. J., Geyer, W., Wilcox, E., and Brownholtz, B. 2005. Patterns of media use in an activity-centric collaborative environment. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (Portland, Oregon, USA, April 02 – 07, 2005). CHI ’05. ACM, New York, NY, 879-888.

2004

Vogel, J., Geyer, W., Cheng, L., Muller, M. 2004. Consistency Control for Synchronous and Asynchronous Collaboration based on Shared Objects and Activities. Journal on CSCW, Special Issue Group 2003, Volume 13, Numbers 5-6 / December, 2004, Springer Netherlands, 573-602.

Geyer, W., Witt, A. J., Wilcox, E., Muller, M., Kerr, B., Brownholtz, B., and Millen, D. R. 2004. Chat spaces. In Proc DIS ’04. ACM, New York, NY, 333-336.

Muller, M. J., Geyer, W., Brownholtz, B., Wilcox, E., and Millen, D. R. 2004. One-hundred days in an activity-centric collaboration environment based on shared objects. In Proc CHI ’04. ACM, New York, NY, 375-382.

Brownholtz, B., Geyer, W., Muller, M. J., Wilcox, E., and Millen, D. R. 2004. Explorations in an activity-centric collaboration environment. In CHI ’04 Extended Abstracts. ACM, New York, NY, 767-768.

2003

Geyer, W., Vogel, J., Cheng, L., and Muller, M. 2003. Supporting activity-centric collaboration through peer-to-peer shared objects. In Proc GROUP ’03. ACM, New York, NY, 115-124.

Geyer, W., Richter, H., Abowd, G. 2003. Making Multimedia Meeting Records More Meaningful. In: Proc. IEEE ICME 2003, International Conference on Multimedia and Expo, Baltimore, MD, July 6-9, 2003.

2002

Geyer, W., Cheng, Li-Te. 2002. Facilitating Emerging Collaboration through Light-weight Information Sharing. In: Conference Supplement CSCW 2002, ACM Conference on Computer-Supported Cooperative Work, New Orleans, Louisiana, USA, November 16 – 20, 2002.

2001

Richter, H., Abowd, G., Geyer, W., Fuchs, L., Daijavad, S., Poltrock, S. 2001. Integrating Meeting Capture within a Collaborative Team Environment. In Proc. Ubicomp 2001.

Geyer, W., Richter, H., Fuchs, L., Frauenhofer, T., Daijavad, S., and Poltrock, S. 2001. A team collaboration space supporting capture and access of virtual meetings. In Proc GROUP ’01. ACM, New York, NY, 188-196.

Mauve, M., Scheele, N., Geyer, W. 2001. Enhancing Synchronous Distance Education with Pervasive Devices. In Proc. Informatik 2001 Jahrestagung GI / OCG: Workshop 21 “Virtuelle Lernraeume”, Vienna, Austria, September 25 – 28, 2001.

Fuchs, L., Geyer, W., Richter, H., Poltrock, S., Frauenhofer, T., Daijavad, S. 2001. Enabling Inter-Company Team Collaboration. In Proc. IEEE 10th Intl. Workshops on Enabling Technologies: Infrastructures for Collaborative Enterprises, MIT, Cambridge, MA, USA, June 20-22, 2001.

Geyer, W., Daijavad, S., Frauenhofer, T., Richter, H., Fuchs, L., Poltrock, S., Brodie, C., Fin, T.-H., Abowd, G. 2001. Capture and Access of Virtual Meetings in TeamSpace. Referred presentation at IBM Knowledge Management Conference, Zurich, Switzerland, April 25 – 27, 2001.

2000

Frauenhofer, T., Geyer, W. 2000. From Sametime Connect to TeamSpace: Evolution of a Pervasive Collaboration Environment. In Proc. PACT 2000, 1st Pact 2000 Workshop on Ubiquitous Computing, Philadelphia, PA, USA, October 15-19, 2000.

Weis, R., Lucks, S., Geyer, W. 2000. Stand der Faktorisierung und noetige Konsequenzen fuer minimale Schluessellaengen (in German). Datenschutz und Datensicherheit, DuD 03/00, Vieweg-Verlag, March 2000.

Vogel, J., Mauve, M., Geyer, W., Hilt, V., and Kuhmünch, C. 2000. A generic late-join service for distributed interactive media. In Proceedings of the Eighth ACM international Conference on Multimedia (Marina del Rey, California, United States). MULTIMEDIA ’00. ACM, New York, NY, 259-267. DOI= http://doi.acm.org/10.1145/354384.354500

Weis, R., Vogel, J., Effelsberg, W., Geyer, W., Lucks, S. 2000. How to Make a Digital Whiteboard Secure – Using JAVA-Cards for Multimedia Applications. In Proc of the 7th International Workshop on Interactive Distributed Multimedia Systems and Telecommunication Services, IDMS 2000, Enschede, Netherlands, October 17-20, 2000.

Geyer, W., Vogel, J., Mauve, M. 2000. An Efficient and Flexible Late Join Algorithm for Shared Whiteboards. In Proc. of the Fifth IEEE International Symposium on Computers and Communications, ISCC’2000, Antibes, France, July 4-6, 2000.

Weis, R., Geyer, W., Kuhmuench, C. 2000. Architectures for Secure Multicast Communication. In Proc. 2nd International SANE Conference, SANE2000, MECC, Maastricht, The Netherlands, May 22 – 25, 2000.

Mauve, M., Hilt, V., Kuhmuench, C., Vogel, J., Effelsberg, W., Geyer, W. 2000. RTP/I – An Application Level Real-Time Protocol for Distributed Interactive Media. Internet Draft, draft-mauve-rtpi-00.txt, March 1, 2000.

Geyer, W., Weis, R. 2000. The Design and the Security Concept of a Collaborative Whiteboard. Computer Communications, Elsevier, Vol. 23, No. 3, February 2000, 233-241.

Hilt, V., Geyer, W., Effelsberg, W. 2000. A New Paradigm for the Recording of Shared Whiteboard Streams. In Proc. MMCN 2000, SPIE Multimedia Computing and Networking, San Jose, CA, January 2000.

1999

Geyer, W. 1999. Das digital lecture board – Konzeption, Design und Entwicklung eines Whiteboards fuer synchrones Teleteaching (in German). Reihe DISDBIS, Bd. 58, ISBN 3-89601-458-7, Infix-Verlag, St. Augustin, Germany, 1999.

Weis, R., Geyer, W. 1999. Cryptographic Concepts for Online-Feedback in Teleteaching Applications. In Proc. NLT’99, International Conference on New Learning Technology, Bern, Switzerland, August 1999, 86-93.

Geyer, W., Mauve, M. 1999. Integrating Support for Collaboration-unaware VRML Models into Cooperative Applications. In Proc. ICMCS’99, IEEE International Conference on Multimedia Computing and Systems, Florence, Italy, June 1999, 655-660.

Biersack, E., Geyer, W. 1999. Synchronized delivery and playout of distributed stored multimedia streams. Multimedia Systems, ACM Press/Springer, Vol. 7, No. 1, January 1999, 70-90.

1998

Geyer, W., Eckert, A., Effelsberg, W. 1998. Multimedia in der Hochschullehre – TeleTeaching an den Universitaeten Mannheim und Heidelberg (in German). Studieren und weiterbilden mit Multimedia, Reihe Multmediales Lernen in der Berufsbildung, BW Bildung und Wissen Verlag, Nuernberg, 1998, 170-196.

Geyer, W., Weis, R. 1998. A Secure, Accountable, and Collaborative Whiteboard. In Proc. IDMS’98, International Workshop on Distributed Multimedia Systems and Services, Oslo, Norway, Springer, Heidelberg, LNCS 1483, September 1998, 3-14.

Geyer, W., Effelsberg, W. 1998. The Digital Lecture Board – A Teaching and Learning Tool for Remote Instruction in Higher Education. In Proc. ED-MEDIA’98, World Conference on Educational Multimedia and Hypermedia, Freiburg, Germany, June 1998, available on CD-ROM. BEST PAPER AWARD

Effelsberg, W., Geyer, W. 1998. Tools for Digital Lecturing – What We Have and What we Need. In Proc. BITE’98, Bringing Information Technology to Education, Maastricht, Netherlands, March 1998.

1997

Hilt, V., Geyer, W. 1997. A Model for Collaborative Services in Distributed Learning Environments. In Proc. IDMS’97, International Workshop on Interactive Distributed Multimedia Systems and Services, Darmstadt, Germany, Springer, Heidelberg, LNCS 1309, September 1997, 364-375.

Eckert, A., Geyer, W., Effelsberg, W. 1997. A Distance Learning System for Higher Education Based on Telecommunications and Multimedia. In Proc. ED-MEDIA’97, World Conference on Educational Multimedia and Hypermedia, Calgary, Canada, June 1997, available on CD-ROM.

Effelsberg, W., Geyer, W., Eckert, A. 1997. Project TeleTeaching Mannheim – Heidelberg. In Proc. 21st Annual Conference of the Society for Classification e.V., University of Potsdam, Germany, March 1997.

Biersack, E., Geyer, W., Bernhardt, C. 1997. Intra- and Inter-Stream Synchronization for Stored Multimedia Streams. In Proc. ICMCS’97, IEEE International Conference on Multimedia Computing and Systems, Hiroshima, Japan, June 1997. OUTSTANDING PAPER AWARD

1996

Geyer, W., Bernhardt, C., Biersack, E. 1996. A Synchronization Scheme for Stored Multimedia Streams. In Proc. IDMS’96, International Workshop on Interactive Distributed Multimedia Systems and Services, Berlin, Germany, Springer, Heidelberg, LNCS 1045, March 1996, 277-296.

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