Denis Helic

ORCID

Publication Activity (10 Years)

Years Active: 1999-2024
Publications (10 Years): 81

Top Venues

CoRR

COMPLEX NETWORKS (2)

SocInfo

Publications

Meng Cao, Hussain Hussain, Sandipan Sikdar, Denis Helic, Markus Strohmaier, Roman Kern
Recommendation Fairness in Social Networks Over Time. CoRR (2024)
Lukas Eberhard, Kristina Popova, Simon Walk, Denis Helic
Computing recommendations from free-form text. Expert Syst. Appl. 236 (2024)
Tiago Santos, Florian Lemmerich, Denis Helic
Bayesian estimation of decay parameters in Hawkes processes. Intell. Data Anal. 27 (1) (2023)
Thorsten Ruprechter, Manoel Horta Ribeiro, Robert West, Denis Helic
Protection from Evil and Good: The Differential Effects of Page Protection on Wikipedia Article Quality. CoRR (2023)
Aleksandar Karakas, Denis Helic
Relation Between Student Characteristics, Git Usage and Success in Programming Courses. EC-TEL (2023)
Christian Toth, Denis Helic, Bernhard C. Geiger
Synwalk: community detection via random walk modelling. Data Min. Knowl. Discov. 36 (2) (2022)
Niklas Hopfgartner, Thorsten Ruprechter, Denis Helic
Retention and Relapse in Gambling Self-help Communities on Reddit. SocInfo (2022)
Mathias Uta, Alexander Felfernig, Denis Helic, Viet-Man Le
Accuracy- and consistency-aware recommendation of configurations. SPLC (A) (2022)
Denis Helic, Ujwal Gadiraju, Marko Tkalcic
Editorial: User Modeling and Recommendations. Frontiers Big Data 5 (2022)
Hussain Hussain, Meng Cao, Sandipan Sikdar, Denis Helic, Elisabeth Lex, Markus Strohmaier, Roman Kern
Adversarial Inter-Group Link Injection Degrades the Fairness of Graph Neural Networks. CoRR (2022)
Hussain Hussain, Meng Cao, Sandipan Sikdar, Denis Helic, Elisabeth Lex, Markus Strohmaier, Roman Kern
Adversarial Inter-Group Link Injection Degrades the Fairness of Graph Neural Networks. ICDM (2022)
Mathias Uta, Alexander Felfernig, Viet Man Le, Andrei Popescu, Thi Ngoc Trang Tran, Denis Helic
Evaluating recommender systems in feature model configuration. SPLC (A) (2021)
Matthias Wölbitsch, Thomas Hasler, Patrick Kasper, Denis Helic, Simon Walk
RFID-based Article-to-Fixture Predictions in Real-World Fashion Stores. CoRR (2021)
Hussain Hussain, Tomislav Duricic, Elisabeth Lex, Denis Helic, Markus Strohmaier, Roman Kern
Structack: Structure-based Adversarial Attacks on Graph Neural Networks. HT (2021)
Christian Toth, Denis Helic, Bernhard C. Geiger
Synwalk - Community Detection via Random Walk Modelling. CoRR (2021)
Mathias Uta, Alexander Felfernig, Denis Helic
Constraint-Aware Recommendation of Complex Items (Long paper). KaRS/ComplexRec@RecSys (2021)
Hussain Hussain, Tomislav Duricic, Elisabeth Lex, Denis Helic, Roman Kern
The interplay between communities and homophily in semi-supervised classification using graph neural networks. Appl. Netw. Sci. 6 (1) (2021)
Niklas Hopfgartner, Tiago Santos, Michael Auer, Mark Griffiths, Denis Helic
Social Facilitation Among Gamblers: A Large-Scale Study Using Account-Based Data. ICWSM (2021)
Philipp Koncar, Simon Walk, Denis Helic
Analysis and Prediction of Multilingual Controversy on Reddit. WebSci (2021)
Thorsten Ruprechter, Manoel Horta Ribeiro, Tiago Santos, Florian Lemmerich, Markus Strohmaier, Robert West, Denis Helic
Volunteer contributions to Wikipedia increased during COVID-19 mobility restrictions. CoRR (2021)
Hussain Hussain, Tomislav Duricic, Elisabeth Lex, Denis Helic, Markus Strohmaier, Roman Kern
Structack: Structure-based Adversarial Attacks on Graph Neural Networks. CoRR (2021)
Tiago Santos, Keith Burghardt, Kristina Lerman, Denis Helic
Limiting Tags Fosters Efficiency. WebSci (2021)
Tiago Santos, Keith Burghardt, Kristina Lerman, Denis Helic
Limiting Tags Fosters Efficiency. CoRR (2021)
Tiago Santos, Florian Lemmerich, Denis Helic
Surfacing Estimation Uncertainty in the Decay Parameters of Hawkes Processes with Exponential Kernels. CoRR (2021)
Tomislav Duricic, Hussain Hussain, Emanuel Lacic, Dominik Kowald, Denis Helic, Elisabeth Lex
Empirical Comparison of Graph Embeddings for Trust-Based Collaborative Filtering. CoRR (2020)
Matthias Wölbitsch, Thomas Hasler, Simon Walk, Denis Helic
Mind the Gap: Exploring Shopping Preferences Across Fashion Retail Channels. UMAP (2020)
Hussain Hussain, Tomislav Duricic, Elisabeth Lex, Roman Kern, Denis Helic
On the Impact of Communities on Semi-supervised Classification Using Graph Neural Networks. COMPLEX NETWORKS (2) (2020)
Hussain Hussain, Tomislav Duricic, Elisabeth Lex, Roman Kern, Denis Helic
On the Impact of Communities on Semi-supervised Classification Using Graph Neural Networks. CoRR (2020)
Tomislav Duricic, Hussain Hussain, Emanuel Lacic, Dominik Kowald, Denis Helic, Elisabeth Lex
Empirical Comparison of Graph Embeddings for Trust-Based Collaborative Filtering. ISMIS (2020)
Tiago Santos, Keith Burghardt, Kristina Lerman, Denis Helic
Can Badges Foster a More Welcoming Culture on Q&A Boards? ICWSM (2020)
Philipp Koncar, Alexandra Fuchs, Elisabeth Hobisch, Bernhard C. Geiger, Martina Scholger, Denis Helic
Text sentiment in the Age of Enlightenment: an analysis of spectator periodicals. Appl. Netw. Sci. 5 (1) (2020)
Anastasia Klimashevskaia, Bernhard C. Geiger, Martin Hagmüller, Denis Helic, Frank Fischer
"To be or not to be central" - On the Stability of Network Centrality Measures in Shakespeare's "Hamlet". DH (2020)
Thorsten Ruprechter, Tiago Santos, Denis Helic
Relating Wikipedia article quality to edit behavior and link structure. Appl. Netw. Sci. 5 (1) (2020)
Philipp Koncar, Denis Helic
Employee Satisfaction in Online Reviews. SocInfo (2020)
Denis Helic
Mining Digital User Traces. SNAMS (2020)
Matthias Wölbitsch, Thomas Hasler, Denis Helic, Simon Walk
Show Me the Money: RFID-based Article-to-Fixture Predictions for Fashion Retail Stores. RFID (2020)
Lukas Eberhard, Simon Walk, Denis Helic
Tell Me What You Want: Embedding Narratives for Movie Recommendations. HT (2020)
Tiago Santos, Simon Walk, Roman Kern, Markus Strohmaier, Denis Helic
Activity Archetypes in Question-and-Answer (Q8A) Websites - A Study of 50 Stack Exchange Instances. ACM Trans. Soc. Comput. 2 (1) (2019)
Matthias Wölbitsch, Thomas Hasler, Michael Goller, Christian Gütl, Simon Walk, Denis Helic
RFID in the Wild - Analyzing Stocktake Data to Determine Detection Probabilities of Products. IoTSMS (2019)
Thorsten Ruprechter, Tiago Santos, Denis Helic
On the Relation of Edit Behavior, Link Structure, and Article Quality on Wikipedia. COMPLEX NETWORKS (2) (2019)
Tiago Santos, Simon Walk, Roman Kern, Markus Strohmaier, Denis Helic
Self- and Cross-Excitation in Stack Exchange Question & Answer Communities. WWW (2019)
Lukas Eberhard, Simon Walk, Lisa Posch, Denis Helic
Evaluating narrative-driven movie recommendations on Reddit. IUI (2019)
Tiago Santos, Florian Lemmerich, Markus Strohmaier, Denis Helic
What's in a Review: Discrepancies Between Expert and Amateur Reviews of Video Games on Metacritic. Proc. ACM Hum. Comput. Interact. 3 (CSCW) (2019)
Philipp Koncar, Denis Helic
Text Sentiment in the Age of Enlightenment. COMPLEX NETWORKS (2) (2019)
Matthias Wölbitsch, Simon Walk, Michael Goller, Denis Helic
Beggars Can't Be Choosers: Augmenting Sparse Data for Embedding-Based Product Recommendations in Retail Stores. UMAP (2019)
Francesco Bonchi, Peter Dolog, Denis Helic, Peter Vojtás
Invited papers from the ACM conference on hypertext and social media. New Rev. Hypermedia Multim. 24 (2) (2018)
Dorien Huysmans, Elena Smets, Walter De Raedt, Chris Van Hoof, Katleen Bogaerts, Ilse Van Diest, Denis Helic
Unsupervised Learning for Mental Stress Detection - Exploration of Self-organizing Maps. BIOSIGNALS (2018)
Massimo Vitiello, Simon Walk, Denis Helic, Vanessa Chang, Christian Gütl
User Behavioral Patterns and Early Dropouts Detection: Improved Users Profiling through Analysis of Successive Offering of MOOC. J. Univers. Comput. Sci. 24 (8) (2018)
Simon Walk, Lisette Espin Noboa, Denis Helic, Markus Strohmaier, Mark A. Musen
How Users Explore Ontologies on the Web: A Study of NCBO's BioPortal Usage Logs. WWW (2017)
Florian Lemmerich, Philipp Singer, Martin Becker, Lisette Espin Noboa, Dimitar Dimitrov, Denis Helic, Andreas Hotho, Markus Strohmaier
Comparing Hypotheses About Sequential Data: A Bayesian Approach and Its Applications. ECML/PKDD (3) (2017)
Tiago Santos, Simon Walk, Roman Kern, Markus Strohmaier, Denis Helic
Activity in Questions & Answers Websites. CoRR (2017)
Massimo Vitiello, Simon Walk, Vanessa Chang, Rocael Hernández, Denis Helic, Christian Guetl
MOOC Dropouts: A Multi-system Classifier. EC-TEL (2017)
Matthias Wölbitsch, Simon Walk, Denis Helic
Modeling Peer Influence in Time-Varying Networks. COMPLEX NETWORKS (2017)
Daniel Lamprecht, Kristina Lerman, Denis Helic, Markus Strohmaier
How the structure of Wikipedia articles influences user navigation. New Rev. Hypermedia Multim. 23 (1) (2017)
Peter Dolog, Peter Vojtás, Francesco Bonchi, Denis Helic
28th ACM International Conference on Hypertext and Social Media. SIGWEB Newsl. 2017 (Winter) (2017)
Philipp Singer, Denis Helic, Andreas Hotho, Markus Strohmaier
A Bayesian Method for Comparing Hypotheses About Human Trails. ACM Trans. Web 11 (3) (2017)
Tiago Santos, Simon Walk, Denis Helic
Nonlinear Characterization of Activity Dynamics in Online Collaboration Websites. WWW (Companion Volume) (2017)
Philipp Koncar, Simon Walk, Denis Helic, Markus Strohmaier
Exploring the Impact of Trolls on Activity Dynamics in Real-World Collaboration Networks. WWW (Companion Volume) (2017)
Simon Walk, Denis Helic, Florian Geigl, Markus Strohmaier
Activity Dynamics in Collaboration Networks. ACM Trans. Web 10 (2) (2016)
Florian Geigl, Kristina Lerman, Simon Walk, Markus Strohmaier, Denis Helic
Assessing the Navigational Effects of Click Biases and Link Insertion on the Web. CoRR (2016)
Stefan John, Michael Granitzer, Denis Helic
Extracting Navigation Hierarchies from Networks with Genetic Algorithms. WEBIST (2) (2016)
Ilire Hasani-Mavriqi, Florian Geigl, Subhash Chandra Pujari, Elisabeth Lex, Denis Helic
The influence of social status and network structure on consensus building in collaboration networks. Soc. Netw. Anal. Min. 6 (1) (2016)
Daniel Lamprecht, Dimitar Dimitrov, Denis Helic, Markus Strohmaier
Evaluating and Improving Navigability of Wikipedia: A Comparative Study of Eight Language Editions. OpenSym (2016)
Daniel Lamprecht, Markus Strohmaier, Denis Helic
A Method for Evaluating the Navigability of Recommendation Algorithms. COMPLEX NETWORKS (2016)
Florian Geigl, Simon Walk, Markus Strohmaier, Denis Helic
Steering the Random Surfer on Directed Webgraphs. WI (2016)
Simon Walk, Lisette Espin Noboa, Denis Helic, Markus Strohmaier, Mark A. Musen
How Users Explore Ontologies on the Web: A Study of NCBO's BioPortal Usage Logs. CoRR (2016)
Darko Stanisavljevic, Ilire Hasani-Mavriqi, Elisabeth Lex, Markus Strohmaier, Denis Helic
Semantic Stability in Wikipedia. COMPLEX NETWORKS (2016)
Florian Lemmerich, Martin Becker, Philipp Singer, Denis Helic, Andreas Hotho, Markus Strohmaier
Mining Subgroups with Exceptional Transition Behavior. KDD (2016)
Florian Geigl, Kristina Lerman, Simon Walk, Markus Strohmaier, Denis Helic
Assessing the Navigational Effects of Click Biases and Link Insertion on the Web. HT (2016)
Dimitar Dimitrov, Philipp Singer, Denis Helic, Markus Strohmaier
The Role of Structural Information for Designing Navigational User Interfaces. HT (2015)
Ilire Hasani-Mavriqi, Florian Geigl, Subhash Chandra Pujari, Elisabeth Lex, Denis Helic
The Influence of Social Status on Consensus Building in Collaboration Networks. ASONAM (2015)
Philipp Singer, Denis Helic, Andreas Hotho, Markus Strohmaier
HypTrails: A Bayesian Approach for Comparing Hypotheses About Human Trails on the Web. WWW (2015)
Martin Becker, Philipp Singer, Florian Lemmerich, Andreas Hotho, Denis Helic, Markus Strohmaier
VizTrails: An Information Visualization Tool for Exploring Geographic Movement Trajectories. HT (2015)
Florian Geigl, Daniel Lamprecht, Rainer Hofmann-Wellenhof, Simon Walk, Markus Strohmaier, Denis Helic
Random Surfers on a Web Encyclopedia. CoRR (2015)
Daniel Lamprecht, Markus Strohmaier, Denis Helic
Improving Reachability and Navigability in Recommender Systems. CoRR (2015)
Florian Geigl, Daniel Lamprecht, Rainer Hofmann-Wellenhof, Simon Walk, Markus Strohmaier, Denis Helic
Random surfers on a web encyclopedia. I-KNOW (2015)
Daniel Lamprecht, Florian Geigl, Tomas Karas, Simon Walk, Denis Helic, Markus Strohmaier
Improving recommender system navigability through diversification: a case study of IMDb. I-KNOW (2015)
Martin Becker, Philipp Singer, Florian Lemmerich, Andreas Hotho, Denis Helic, Markus Strohmaier
Photowalking the City: Comparing Hypotheses About Urban Photo Trails on Flickr. SocInfo (2015)
Daniel Lamprecht, Markus Strohmaier, Denis Helic, Csongor Nyulas, Tania Tudorache, Natalya Fridman Noy, Mark A. Musen
Using ontologies to model human navigation behavior in information networks: A study based on Wikipedia. Semantic Web 6 (4) (2015)
Simon Walk, Philipp Singer, Markus Strohmaier, Denis Helic, Natalya Fridman Noy, Mark A. Musen
How to apply Markov chains for modeling sequential edit patterns in collaborative ontology-engineering projects. Int. J. Hum. Comput. Stud. 84 (2015)
Simon Walk, Denis Helic, Florian Geigl, Markus Strohmaier
Activity Dynamics in Collaboration Networks. CoRR (2015)
Philipp Singer, Denis Helic, Andreas Hotho, Markus Strohmaier
HypTrails: A Bayesian Approach for Comparing Hypotheses about Human Trails. CoRR (2014)
Florian Geigl, Denis Helic
The Role of Homophily and Popularity in Informed Decentralized Search. DyNaK (2014)
Simon Walk, Philipp Singer, Markus Strohmaier, Denis Helic, Natasha F. Noy, Mark A. Musen
Sequential Usage Patterns in Collaborative Ontology-Engineering Projects. CoRR (2014)
Philipp Singer, Denis Helic, Behnam Taraghi, Markus Strohmaier
Memory and Structure in Human Navigation Patterns. CoRR (2014)
Denis Helic
Regular equivalence in informed network search. MIPRO (2014)
Denis Helic, Markus Strohmaier, Michael Granitzer, Reinhold Scherer
Models of human navigation in information networks based on decentralized search. HT (2013)
Markus Strohmaier, Denis Helic, Dominik Benz, Christian Körner, Roman Kern
Evaluation of Folksonomy Induction Algorithms. ACM Trans. Intell. Syst. Technol. 3 (4) (2012)
Denis Helic
Analyzing user click paths in a Wikipedia navigation game. MIPRO (2012)
Christoph Trattner, Denis Helic, Philipp Singer, Markus Strohmaier
Exploring the differences and similarities between hierarchical decentralized search and human navigation in information networks. I-KNOW (2012)
Denis Helic, Christian Körner, Michael Granitzer, Markus Strohmaier, Christoph Trattner
Navigational efficiency of broad vs. narrow folksonomies. HT (2012)
Seid Maglajlic, Denis Helic
How do Social Networks Influence Learning Outcomes? A Case Study in an Industrial Setting. Interact. Technol. Smart Educ. 9 (2) (2012)
Ilire Hasani-Mavriqi, Helmut Leitner, Denis Helic, Hermann A. Maurer
Implementation of a Wiki-based Information and Communication System for Academia Europaea. J. Comput. Inf. Technol. 19 (4) (2011)
Denis Helic, Christoph Trattner, Markus Strohmaier, Keith Andrews
Are tag clouds useful for navigation? A network-theoretic analysis. Int. J. Soc. Comput. Cyber Phys. Syst. 1 (1) (2011)
Denis Helic, Markus Strohmaier
Building directories for social tagging systems. CIKM (2011)
Denis Helic, Sebastian Wilhelm, Ilire Hasani-Mavriqi, Markus Strohmaier
The effects of navigation tools on the navigability of web-based information systems. I-KNOW (2011)
Christoph Trattner, Christian Körner, Denis Helic
Enhancing the navigability of social tagging systems with tag taxonomies. I-KNOW (2011)
Christoph Trattner, Denis Helic, Markus Strohmaier
On the Construction of Efficiently Navigable Tag Clouds Using Knowledge from Structured Web Content. J. Univers. Comput. Sci. 17 (4) (2011)
Denis Helic, Markus Strohmaier, Christoph Trattner, Markus Muhr, Kristina Lerman
Pragmatic evaluation of folksonomies. WWW (2011)
Christoph Trattner, Ilire Hasani-Mavriqi, Denis Helic, Helmut Leitner
The Austrian way of Wiki(pedia)!: development of a structured Wiki-based encyclopedia within a local Austrian context. Int. Sym. Wikis (2010)

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Publication Activity (10 Years)

Top Topics

Top Venues

Denis Helic