Publications in reversed chronological order. Please check my Google Scholar page for more details.


  1. Characterizing Information Seeking Processes with Multiple Physiological Signals
    Kaixin JiDanula HettiachchiFlora D SalimFalk Scholer, and Damiano Spina
    In Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR ’24), 2024
    To appear.
  2. Walert: Putting Conversational Information Seeking Knowledge into Action by Building and Evaluating a Large Language Model-Powered Chatbot
    Sachin Pathiyan Cherumanal, Lin Tian, Futoon M. Abushaqra, Angel Felipe Paula, Kaixin JiDanula HettiachchiJohanne R. Trippas, Halil Ali, Falk Scholer, and Damiano Spina
    In Proceedings of ACM SIGIR Conference on Human Information Interaction And Retrieval (CHIIR ’24), 2024


  1. Designing and Evaluating Presentation Strategies for Fact-Checked Content
    Danula HettiachchiKaixin Ji, Jenny Kennedy, Anthony McCoskerFlora D SalimMark SandersonFalk Scholer, and Damiano Spina
    In Proceedings of the 32nd ACM International Conference on Information & Knowledge Management (CIKM ’23), 2023
  2. How Crowd Worker Factors Influence Subjective Annotations: A Study of Tagging Misogynistic Hate Speech in Tweets
    Danula Hettiachchi, Indigo Holcombe-James, Stephanie Livingstone, Anjalee Silva, Matthew LeaseFlora D Salim, and Mark Sanderson
    In Proceedings of the Eleventh AAAI Conference on Human Computation and Crowdsourcing (HCOMP ’23), 2023
  3. Are footpaths encroached by shared e-scooters? Spatio-temporal Analysis of Micro-mobility Services
    Hiruni Kegalle, Danula HettiachchiJeffrey ChanFlora Salim, and Mark Sanderson
    In 2023 24th IEEE International Conference on Mobile Data Management (MDM ’23), 2023
  4. Examining the Impact of Uncontrolled Variables on Physiological Signals in User Studies for Information Processing Activities
    Kaixin JiDamiano SpinaDanula HettiachchiFlora D Salim, and Falk Scholer
    In Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR ’23), 2023
  5. Combining Worker Factors for Heterogeneous Crowd Task Assignment
    Senuri WijenayakeDanula Hettiachchi, and Jorge Goncalves
    In Proceedings of the ACM Web Conference 2023 (WWW ’23), 2023
  6. Mapping 20 years of accessibility research in HCI: A co-word analysis
    International Journal of Human Computer Studies, 175(), 103018, 2023
  7. RMIT_IR at the NTCIR-17 FairWeb-1 Task
    Sachin Pathiyan Cherumanal, Kaixin JiDanula HettiachchiJohanne R TrippasFalk Scholer, and Damiano Spina
    In Proceedings of 17th Conference on Evaluation of Information Access Technologies (NTCIR-17), 2023
  8. Towards Detecting Tonic Information Processing Activities with Physiological Data
    Kaixin JiDamiano SpinaDanula HettiachchiFalk Scholer, and Flora D. Salim
    In Adjunct Proceedings of the 2023 ACM International Joint Conference on Pervasive and Ubiquitous Computing & the 2023 ACM International Symposium on Wearable Computing (UbiComp/ISWC ’23 Adjunct), 2023
  9. Helpful, Misleading or Confusing: How Humans Perceive Fundamental Building Blocks of Artificial Intelligence Explanations
    Edward Small, Yueqing Xuan, Danula Hettiachchi, and Kacper Sokol
    In ACM CHI Workshop Human-Centered Perspectives in Explainable AI, 2023
  10. Towards Measuring Sensitivity of Psychometrics in Crowdsourcing Tasks: Engaging with Fact-checked Content Online
    Stanislaus Krisna, Danula Hettiachchi, and Damiano Spina
    In Proceedings of the CSCW 2023 Workshop on Undertanding and Mitigating Cognitive Biases in Human-AI Collaboration (CSCW ’23 Workshop), 2023


  1. A Survey on Task Assignment in Crowdsourcing
    Danula HettiachchiVassilis Kostakos, and Jorge Goncalves
    ACM Computing Surveys, 55(3), 1–35, 2022
  2. Does a Face Mask Protect My Privacy?: Deep Learning to Predict Protected Attributes from Masked Face Images
    Sachith Seneviratne, Nuran Kasthuriarachchi, Sanka RasnayakaDanula Hettiachchi, and Ridwan Shariffdeen
    In AI 2021: Advances in Artificial Intelligence (AJCAI ’21), 2022
  3. REGROW: Reimagining Global Crowdsourcing for Better Human-AI Collaboration
    Andy Alorwu, Saiph Savage, Niels van Berkel, Dmitry Ustalov, Alexey Drutsa, Jonas Oppenlaender, Oliver Bates, Danula Hettiachchi, Ujwal Gadiraju, Jorge Goncalves, and Simo Hosio
    In Extended Abstracts of the 2022 CHI Conference on Human Factors in Computing Systems (CHI EA ’22), 2022


  1. The Challenge of Variable Effort Crowdsourcing and How Visible Gold Can Help
    Danula HettiachchiMike Schaekermann, Tristan McKinney, and Matthew Lease
    Proceedings of the ACM on Human-Computer Interaction, 5(CSCW2), 26, 2021
  2. Effect of Conformity on Perceived Trustworthiness of News in Social Media
    IEEE Internet Computing, 25(1), 12–19, 2021
  3. Team Dynamics in Hospital Workflows: An Exploratory Study of a Smartphone Task Manager
    Danula Hettiachchi, Lachie Hayes, Jorge Goncalves, and Vassilis Kostakos
    JMIR Medical Informatics, 9(8), e28245, 2021
  4. Investigating and Mitigating Biases in Crowdsourced Data
    Danula HettiachchiMark SandersonJorge GoncalvesSimo Hosio, Gabriella Kazai, Matthew LeaseMike Schaekermann, and Emine Yilmaz
    In Companion Publication of the 2021 Conference on Computer Supported Cooperative Work and Social Computing (CSCW ’21 Companion), 2021
  5. Investigating Human Scale Spatial Experience
    Ville Paananen, Jonas OppenlaenderJorge GoncalvesDanula Hettiachchi, and Simo Hosio
    Proceedings of the ACM on Human-Computer Interaction, 5(ISS), 1–18, 2021


  1. “Hi! I am the Crowd Tasker” Crowdsourcing through Digital Voice Assistants
    In Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems (CHI ’20), 2020
  2. CrowdCog: A Cognitive Skill based System for Heterogeneous Task Assignment and Recommendation in Crowdsourcing
    Danula HettiachchiNiels van BerkelVassilis Kostakos, and Jorge Goncalves
    Proceedings of the ACM on Human-Computer Interaction, 4(CSCW2), 1–22, 2020
  3. How Context Influences Cross-Device Task Acceptance in Crowd Work
    In Proceedings of the AAAI Conference on Human Computation and Crowdsourcing (HCOMP ’20), 2020


  1. Effect of Cognitive Abilities on Crowdsourcing Task Performance
    In Human-Computer Interaction – INTERACT 2019, 2019
  2. Crowdsourcing Perceptions of Fair Predictors for Machine Learning: A Recidivism Case Study
    Proceedings of the ACM on Human-Computer Interaction, 3(CSCW), 1–21, 2019
  3. Measuring the Effects of Stress on Mobile Interaction
    Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, 3(1), 1–18, 2019
  4. Towards Effective Crowd-Powered Online Content Moderation
    Danula Hettiachchi, and Jorge Goncalves
    In Proceedings of the 31st Australian Conference on Human-Computer-Interaction (OZCHI ’19), 2019
  5. Effect of Ambient Light on Mobile Interaction
    In Human-Computer Interaction (INTERACT ’19), 2019
  6. Enabling Creative Crowd Work Through Smart Speakers
    In Workshop on Designing Crowd-powered Creativity Support Systems (CHI’19 Workshop), 2019