Denis Helic

Assoc.Prof. Dipl.-Ing. Dr.techn.

19972020
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Research Output 1997 2019

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Conference contribution
2019

Self- and Cross-Excitation in Stack Exchange Question & Answer Communities

Teixeira dos Santos, T., Walk, S., Kern, R., Strohmaier, M. & Helic, D., 2019, The Web Conference (WWW). Association of Computing Machinery, 11 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2018

Modeling peer influence in time-varying networks

Wölbitsch, M., Walk, S. & Helic, D., 1 Jan 2018, Complex Networks and Their Applications VI - Proceedings of Complex Networks 2017 (The 6th International Conference on Complex Networks and Their Applications). Springer Verlag Heidelberg, p. 353-364 12 p. (Studies in Computational Intelligence; vol. 689).

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Time varying networks
Online systems
Specifications

Unsupervised learning for mental stress detection exploration of self-organizing maps

Huysmans, D., Smets, E., De Raedt, W., Van Hoof, C., Bogaerts, K., Van Diest, I. & Helic, D., 1 Jan 2018, BIOSIGNALS 2018 - 11th International Conference on Bio-Inspired Systems and Signal Processing, Proceedings; Part of 11th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2018. SciTePress 2013, Vol. 4. p. 26-35 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Unsupervised learning
Self organizing maps
Electrocardiography
Skin
Labels
2017

Comparing Hypotheses About Sequential Data: A Bayesian Approach and Its Applications

Lemmerich, F., Singer, P., Becker, M., Espin-Noboa, L., Dimitrov, D., Helic, D., Hotho, A. & Strohmaier, M., 2017, Machine Learning and Knowledge Discovery in Databases - European Conference, ECML PKDD 2017, Proceedings. Springer Verlag Wien, Vol. 10536 LNAI. p. 354-357 4 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 10536 LNAI).

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Bayesian Approach
Markov processes
Websites
Testing
Markov Chain Model

Exploring the Impact of Trolls on Activity Dynamics in Real-World Collaboration Networks

Koncar, P., Walk, S., Helic, D. & Strohmaier, M., 3 Apr 2017, Proceedings of the 26th International Conference on World Wide Web Companion. p. 1573-1578 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Websites
Semantics

MOOC Dropouts: A Multi-system Classifier

Vitiello, M., Walk, K., Chang, V., Hernandez Rizzardini, R., Helic, D. & Gütl, C., 2017, Data Driven Approaches in Digital Education: Proceedings of 12th European Conference on Technology Enhanced Learning (EC-TEL 2017). Springer, p. 300-314 15 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Nonlinear characterization of activity dynamics in online collaboration websites

Teixeira dos Santos, T., Walk, S. & Helic, D., 2017, Proceedings of the 26th International Conference on World Wide Web Companion.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Predicting Dropouts on the Successive Offering of a MOOC

Vitiello, M., Walk, S., Helic, D., Chang, V. & Gütl, C., 2017, MOOC-MAKER 2017: Proceedings of the International Conference MOOC-MAKER 2017. p. 11-20 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2016

Classifying students to improve MOOC dropout rates

Vitiello, M., Walk, S., Rizzardini, R., Helic, D. & Gütl, C., 2016, Proceedings of the EUROPEAN STAKEHOLDER SUMMIT on experiences and best practices in and around MOOCs (EMOOCS 2016). p. 501-508

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Semantic Stability in Wikipedia

Stanisavljevic, D., Mavriqi-Hasani, I., Lex, E., Strohmaier, M. & Helic, D., 30 Nov 2016, Complex Networks & Their Applications V: Proceedings of the 5th International Workshop on Complex Networks and their Applications (COMPLEX NETWORKS 2016). Springer International Publishing AG , p. 379-390

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2015

Hyptrails: A bayesian approach for comparing hypotheses about human trails on the web

Singer, P., Helic, D., Hotho, A. & Strohmaier, M., 2015, International World Wide Web Conference. ., p. 1003-1013

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Improving recommender system navigability through diversification: a case study of IMDb

Lamprecht, D., Geigl, F., Karas, T., Walk, S., Helic, D. & Strohmaier, M., 2015, International Conference on Knowledge Management. ., p. 21:1-21:8

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Open Access
File

Influence of Status on Consensus Building in Collaboration Networks

Hasani-Mavriqi, I., Geigl, F., Pujari, S. C., Lex, E. & Helic, D., 2015, Proceedings of the IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2015).

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Photowalking the City: Comparing Hypotheses About Urban Photo Trails on Flickr

Becker, M., Singer, P., Lemmerich, F., Hotho, A., Helic, D. & Strohmaier, M., 2015, Proceedings of the 7th International Conference on Social Informatics, SocInfo 2015. ., p. 227-244

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Quo vadis? On the effects of Wikipedia’s policies on navigation

Lamprecht, D., Helic, D. & Strohmaier, M., 2015, Wikipedia, a Social Pedia: Research Challenges and Opportunities. ., p. 64-66

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Random surfers on a web encyclopedia

Geigl, F., Lamprecht, D., Hofmann-Wellenhof, R., Walk, S., Strohmaier, M. & Helic, D., 2015, International Conference on Knowledge Management. ., p. 5:1-5:8

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

The Influence of Social Status on Consensus Building in Collaboration Networks

Hasani-Mavriqi, I., Geigl, F., Pujari, S. C., Lex, E. & Helic, D., 2015, Proceedings of the 2015 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining. New York: Association of Computing Machinery, p. 162-169

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Open Access
File

The Role of Structural Information for Designing Navigational User Interfaces

Dimitrov, D., Singer, P., Helic, D. & Strohmaier, M., 2015, ACM Conference on Hypertext and Hypermedia. ., p. 59-68

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

VizTrails: An Information Visualization Tool for Exploring Geographic Movement Trajectories

Becker, M., Singer, P., Lemmerich, F., Hotho, A., Helic, D. & Strohmaier, M., 2015, ACM Conference on Hypertext and Hypermedia. ., p. 319-320

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2014

Regular equivalence in informed network search

Helic, D., 2014, International Convention on Information and Communication Technology, Electronics and Microelectronics. ., p. 1088-1093

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

The Role of Homophily and Popularity in Informed Decentralized Search

Geigl, F. & Helic, D., 2014, Proceedings of the 2nd International Workshop on Dynamic Networks and Knowledge Discovery. ., p. ---

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2013

Models of human navigation in information networks based on decentralized search

Helic, D., Strohmaier, M., Granitzer, M. & Scherer, R., 2013, ACM Conference on Hypertext and Hypermedia. ., p. 89-98

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Navigational evaluation of breadth first search spanning trees

Helic, D., Strohmaier, M. & Wojcik, W., 2013, Information & Communication Technology Electronics & Microelectronics (MIPRO). ., p. 998-1003

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Predicting Social Interactions from Different Sources of Location-based Knowledge

Steurer, M., Trattner, C. & Helic, D., 2013, The Third International Conference on Social Eco-Informatics. ., p. 8-13

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2012

Analyzing User Click Paths in a Wikipedia Navigation Game

Helic, D., 2012, Proceedings of MIPRO 2007, International Convention on Information and Communication Technology, Electronics, and Microelectronics. ., p. 374-379

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Exploring the differences and similarities between hierarchical decentralized search and human navigation in information networks

Trattner, C., Helic, D., Singer, P. & Strohmaier, M., 2012, (Accepted/In press) Proceedings of the 12th International Conference on Knowledge Management and Knowledge Technologies. .

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Navigational Efficiency of Broad vs. Narrow Folksonomies

Helic, D., Körner, C., Granitzer, M., Strohmaier, M. & Trattner, C., 2012, Proceedings of the 23rd ACM Conference on Hypertext and Social Media. NY, New York: Association of Computing Machinery, p. 63-72

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2011

Building Directories for Social Tagging Systems

Helic, D. & Strohmaier, M., 2011, In 20th ACM Conference on Information and Knowledge Management (CIKM 2011). ., p. 0-0

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Enhancing the Navigability of Social Tagging Systems with Tag Taxonomies

Trattner, C., Körner, C. & Helic, D., 2011, (Accepted/In press) International Conference on Knowledge Management. NY: Association of Computing Machinery

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Implementation of a Wiki-based Information and Communication System for Academia Europaea

Hasani-Mavriqi, I., Helic, D., Leitner, H. & Maurer, H., 2011, Proceedings of the ITI 2011, 33rd International Conference on Information Technology Interfaces. Zagreb: ., p. 193-198

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Pragmatic Evaluation of Folksonomies

Helic, D., Strohmaier, M., Trattner, C., Muhr, M. & Lerman, K., 2011, Proceedings of the 20th international conference on World wide web (WWW '11). NY: Association of Computing Machinery, p. 417-426

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

The Effects of Navigation Tools on the Navigability of Web-Based Information Systems

Helic, D., Hasani-Mavriqi, I., Wilhelm, S. & Strohmaier, M., 2011, Proceedings of the 11th International Conference on Knowledge Management and Knowledge Technologies. New York, NY, USA: Association of Computing Machinery, p. 01-08

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2010

Click, Click --- and an educational presentation is available on the Web

Trattner, C., Helic, D., Korica-Pehserl, P. & Maurer, H., 2010, In Proceedings of World Conference on Educational Multimedia, Hypermedia and Telecommunications 2010. Chesapeake: Association for the Advancement of Computing in Education, p. 3932-3938

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Discovery and Construction of Authors' Profile from Linked Data (A case study for Open Digital Journal)

Helic, D., 2010, (Accepted/In press) The Linked Data on the Web Workshop, WWW2010. .

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Enriching Tagging Systems with Google Query Tags

Trattner, C., Helic, D. & Maglajlic, S., 2010, Proceedings of 32nd International Conference on Information Technology Interfaces. ., p. 205-210

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Improving Navigability of Hierarchically-Structured Encyclopedias through Effective Tag Cloud Construction

Trattner, C., Helic, D. & Strohmaier, M., 2010, (Accepted/In press) Proceedings of 10th International Conference on Knowledge Management and Knowledge Technologies. .

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Linking Related Documents: Combining Tag Clouds and Search Queries

Trattner, C. & Helic, D., 2010, Web Engineering - Lecture Notes in Computer Science, 2010, Volume 6189/2010. Berlin: Springer, p. 486-489

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

On the Navigability of Social Tagging Systems

Helic, D., Trattner, C., Strohmaier, M. & Andrews, K., 2010, Proceedings of the Second IEEE International Conference on Social Computing (SocialCom2010). Institute of Electrical and Electronics Engineers, p. 161-168

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Social Computing: A Future Approach of Product Lifecycle Management

Denger, A., Maletz, M. & Helic, D., 2010, Proceedings of I-KNOW 2010. ., p. 451-457

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Social Networks and eLearning: New Model for Learning at Workplace

Maglajlic, S., Helic, D. & Trattner, C., 2010, Proceedings of 32nd International Conference on Information Technology Interfaces. ., p. 373-378

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

The Austrian way of Wiki(pedia)! - Development of a Structured Wiki-based Encyclopedia within a Local Austrian Context

Trattner, C., Hasani-Mavriqi, I., Helic, D. & Leitner, H., 2010, In Proceedings of the 6th International Symposium on Wikis and Open Collaboration. New York: Association of Computing Machinery, p. 1-10

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Using Wiki for Rapid Authoring of Huge Numbers of E-Assessments

Hasani-Mavriqi, I., Portsch, C., Trattner, C., Kacjan, B., Helic, D. & Maurer, H., 2010, In Proceedings of World Conference on Educational Multimedia, Hypermedia and Telecommunications 2010. Chesapeake: Association for the Advancement of Computing in Education, p. 3046-3053

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2009

Competence-based Adaptation of Learning Environments in 3D Space

Nussbaumer, A., Gütl, C., Albert, D. & Helic, D., 2009, Proceedings of the International Conference on Interactive Mobile and Computer Aided Learning (IMCL 2009). ., p. 103-108

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Creating Dynamic Wiki Pages with Section-Tagging

Helic, D., Us Saeed, A. & Trattner, C., 2009, Proceedings of the 1st Workshop on New Forms of Xanalogical Storage and Function, held as part of the ACM Hypertext 2009. ., p. 18-22

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

EXTENDING THE BASIC TAGGING MODEL: CONTEXT AWARE TAGGING

Trattner, C. & Helic, D., 2009, Proceedings of IADIS International Conference WWW/Internet 2009. ., p. 76-83

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Towards a Standardized e-Assessment System: Motivations, Challenges and First Findings

Smadi, M., Gütl, C. & Helic, D., 2009, IMCL 2009. ., p. 44-49

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Using Computers to Enhance Peer-assessment Activities: Towards a Flexible e-Assessment System

Smadi, M., Gütl, C. & Helic, D., 2009, (Accepted/In press) ICL 2009. .

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2008

A Citable Web Encyclopedia

Helic, D., 2008, Proceedings of IADIS International Conference WWW/Internet 2008. ., p. 19-26

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Integrated Copy-Paste Checking: Design and Services

Helic, D., 2008, Proceedings / the 8th IEEE International Conference on Advanced Learning Technology. Los Alamitos, Calif.: IEEE Computer Soc., p. 519-523

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

2007

Developing an E-Learning Application for Teaching Phraseology in Foreign Languages: Lessons Learned from EPHRAS Project

Helic, D., 2007, International Convention on Information and Communication Technology, Electronics and Microelectronics. ., p. 38-43

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review