- SIGIR 2022 paper led by Nirmal Roy accepted: Users and Contemporary SERPs: A (Re-)Investigation.
- One more PhD defense to celebrate in my lab: Felipe Moraes defended his PhD thesis on the topic of Examining the Effectiveness of Collaborative Search Engines in February 2022
- Starting from August 2021 I work at Spotify, with a part-time appointment at TU Delft.
- Three works made it into ICTIR 2021. Led by three PhD students from my team, Nirmal Roy (interaction models for IR), Peide Zhu (question generation), and Sara Salimzadeh (entity cards - this work got an honorable mention ). Supported by David Maxwell and Arthur Câmara.
- I gave a talk (04/2021) at the UMass CIIR Talk Series and presented my team’s Search As Learning research.
- I gave a keynote (04/2021) at the Workshop on Mixed-Initiative ConveRsatiOnal Systems 2021 co-hosted at ECIR; the slides are available here.
- Our ECIR demo LogUI: Contemporary Logging Infrastructure for Web-Based Experiments (led by David Maxwell) received the “Best Demo Award.”
- Our CHIIR paper Searching to Learn with Instructional Scaffolding (led by Arthur Câmara) received the “Best Student Paper Award.” Watch the paper’s video presentation on YouTube.
- Full paper accepted at EACL 2021: On the Calibration and Uncertainty of Neural Learning to Rank Models, led by Gustavo Penha.
For a brief and compact overview, take a look at my 1-page CV.
I joined Spotify in August 2021, initially for a sabbatical and then switching to a permanent role in April 2022 as Staff Research Scientist.
I maintain a part-time faculty position at TU Delft. I have been working as staff member (first as Assistant Professor and since 2018 as Associate Professor) at the Web Information Systems group, Delft University of Technology since 2013. Between 2011 and 2012 I was a Postdoc in the same group. I received my PhD in 2010 from the University of Twente, where I worked in the Human Media Interaction group. The Otto-von-Guericke University of Magdeburg in Germany was my home during my undergraduate years as a student in computer science. In the past, I have worked on a variety of topics in the fields of information retrieval & data science, including query performance prediction (the topic of my PhD thesis), social search, computational social science, learning to search and IR for specific user groups.
I have diverse research interests and am always happy to dive into a new area. Together with a number of PhD students at TU Delft I am currently focusing on how to incorporate search into the human learning process at scale, collaborative search, and conversational search. For the latter, I am also maintaining a list of conversational venues and datasets. In 2016 and 2017 I received two prestigious personal grants from the Netherlands Organisation for Scientific Research (NWO) with a total funding of more than 1 million euros; this translates into 4-5 PhD/postdoc positions in the developing “search as learning” research area. Take a look at the Dagstuhl Seminar I co-organized on the topic to get an idea of what it is about.
In 2021, I gave an invited keynote at the MICROS workshop, co-hosted at ECIR 2021 on the topic of conversational search.
Current members of my TU Delft lab
- David Maxwell (postdoc, since 03/2020)
- Arthur Barbosa Câmara (PhD student, since 11/2018)
- Gustavo Penha (PhD student, since 11/2018)
- Nirmal Roy (PhD student, since 09/2019)
- Peide Zhu (PhD student, since 11/2019)
Past members of my TU Delft lab
- Felipe Moraes graduated in 2022 with a PhD thesis on Examining the Effectiveness of Collaborative Search Engines.
- Dan Davis graduated in 2019 with a PhD thesis on the topic of Large-Scale Learning Analytics: Modeling Learner Behavior & Improving Learning Outcomes in Massive Open Online Courses
- Guanliang Chen graduated in 2019 with a PhD thesis on the topic of MOOC Analytics: Learner Modeling and Content Generation
- Yue Zhao graduated with a PhD in 2019 on the topic of Learning Analytics Technology to Understand Learner Behavioral Engagement in MOOCs
- Research engineer Mónica Marrero (2017-18)
- Ke Tao graduated with a PhD in 2014 on the topic of Social Web Data Analytics: Relevance, Redundancy, Diversity
- Postdoc Dimitrios Bountouridis worked on fairness in the news recommender domain (2018-19)
- Research engineer Manuel Valle Torre (sponsored by Delft Data Science, 2019-2021)
TU Delft lab software
- ELAT: EdX Logfile Analysis Tool that is browser-based, and a fully local processing tool. No server needed, no programming knowledge needed, no setup costs. Lead developer is Manuel Valle Torre.
- SearchX is a scalable collaborative search system, developed to research large-scale search and sensemaking experiments. Lead developer is Felipe Moraes.
- APONE is an academic environment for online experiments, that we have used in our research and teaching. Lead developer is Mónica Marrero.
- SIREN is a simulation framework for understanding the effects of recommender systems in online news environments. Lead developer is Dimitrios Bountouridis.
- NWO Aspasia grant (100,000€) as a top-up of my NWO VIDI (50K for my research, 50K for diversity measures in the faculty), September 2018.
- NWA Startimpulsprogramma VWData (325,000€) awarded together with 2 co-PIS. A two-year Postdoc position will be funded within a work package that considers fairness in news recommenders.
- NWO VIDI grant (800,000€) for my proposal SearchX: Integrating search and sensemaking into large-scale open online learning, May 2017 (personal grant, 15% acceptance rate)
- NWO TOP grant (226,000€) to conduct “innovative or high-risk scientific research that addresses questions of high quality and urgency;” specifically I will push the boundaries of large-scale collaborative search, November 2016 (personal grant, 23% acceptance rate)
- Grant (33,000€) from the Leiden-Delft-Erasmus Centre for Education and Learning to conduct research on the benefits of eyetracking in massive open online learning, November 2016
- TU Delft Education Research tender (2,500€, 1 co-PI) to bring real-time teaching and learning analytics into the classroom, July 2016
- TU Delft Study Success tender (3,000€, 1 co-PI) to further improve teaching in the Bachelor, September 2015
- TU Delft Blended Education tender (10,000€, 1 co-PI) to improve teaching in the Bachelor, September 2014
Organizational duties and activities
- Invited talk at the SIKS day 2022 (slides)
- Invited panel member for the The Next Generation of Multimedia Search and Recommendation at ACM Multimedia 2021
- Invited talk (slides) at the Sim4IR workshop (July 2021)
- Invited talk at the Algorithmic Targeted Communication workshop (June 2021)
- Invited talk (slides) at the BBC Data Dates Series (May 2021)
- Invited talk (slides) at the UMass CIIR Talk series (04/2021)
- Invited keynote (slides) at the Mixed-Initiative ConveRsatiOnal Systems Workshop (co-hosted at ECIR 2021)
- Invited keynote (slides) at the ING NLP Analytics Conference (03/2021)
- Invited talk (slides) at the Glasgow Fairness and Bias in Information Retrieval Workshop (03/2021)
- Elected ELLIS Fellow in the ELLIS Unit Delft (12/2020)
- CHIIR 2022 demo co-chair
- Guest editor of an ACM TOIS special issue on Conversational Search (summer of 2020)
- Invited keynote (slides) at the 1st International Workshop on Investigating Learning During Web Search co-located with CIKM 2020
- Short paper co-chair at SIGIR 2021
- Workshop co-chair at WSDM 2021
- Invited keynote at Baltic DB&IS 2020 (slides)
- Lecturer at the SIKS course Advances in Information Retrieval (October 2019)
- Invited talk (slides) at the ICAI AIRLab meetup in Utrecht (September 2019)
- ACM SIGIR Executive Committee member (2019-2022)
- Search track co-chair at WebConf 2020
- Co-organizer of the SIGIR 2019 Open-Source IR Replicability Challenge (OSIRRC 2019)
- Invited participant at the Conversational Search Dagstuhl Seminar (November 2019)
- Lecturer (slides) at ESSIR (July 2019)
- Invited talk (slides) at the Delft Deep Learning Colloqium (June 2019)
- Invited participant at the CIFAR workshop AI-Powered Information Ecosystems and Democracy (June 2019)
- Invited talk at the Search Engines Amsterdam meetup (April 2019)
- Computational Science Advisory Board member of the Lorentz Center (since 2019)
- Program Co-Chair for CIKM 2020
- Invited speaker at the Israeli Learning Analytics Symposium (slides) held at the Weizmann Institute
- Tutorial chair at ICTIR 2019
- Workshop co-chair at SIGIR 2019
- Delft AI meetup co-organizer (active since November 2018)
- Tutorial co-chair at WSDM 2019
- Short paper co-chair at ECIR 2019
- Invited keynote at CORIA, the French chapter of IR conferences (May 2018) (slides)
- Invited participant at the Third Strategic Workshop in Information Retrieval (SWIRL III) in Lorne (February 2018)
- Invited talk at the General Mathematics Colloqium Leiden (December 2017)
- Invited talk at the Leiden Institute of Advanced Computer Science (December 2017)
- Invited talk (slides) at the Search Engines Amsterdam meetup (November 2017)
- Invited panel member at the ICTIR 2017 workshop Search-Oriented Conversational AI and the SIGIR 2017 workshop on Neural Information Retrieval
- Invited speaker at a special panel on on grant acquisition at the ICTng Retreat
- Editorial Board member of Springer’s Information Retrieval Journal
- Tutorial Chair at the 40th European Conference on Information Retrieval (2018)
- Invited talk at the Education in exponential times workshop in Madrid (July 2017)
- Program co-chair of ECIR 2017
- Member of the advisory board of the European project AFEL (May 2017)
- Organizer of the Delft Data Science Seminar on Online Education (March 2017)
- Editorial Board member of the Foundations and Trends in Information Retrieval journal
- Co-organizer of the Placing Task benchmark @ MediaEval 2016
- Organizer of the 15th Dutch-Belgian Information Retrieval Workshop (November 2016)
- Invited talk (slides) at the Data Science Northeast Netherlands meetup (October 2016)
- Guest editor of the special issue Search as Learning in Springer’s Information Retrieval Journal
- Co-organizer of a Dagstuhl seminar on Search as Learning (February 2017)
- Member of the 2016-2018 Steering Committee ICT with Industry workshop (website of the 2017 edition)
- Co-organizer of the Search as Learning workshop at SIGIR 2016
- Demo co-chair of the 38th European Conference on Information Retrieval
- Invited talk at the #SupportTheCause symposium on Twitter-based election forecasting (January 2016)
- Coordinator (one of two) of the Data Science & Technology track within TU Delft’s Computer Science MSc program since 11/2015
- Invited talk at Sanoma on Searching and Learning (October 2015)
- Invited talk at ILPS, University of Amsterdam on Searching and Learning (September 2015)
- Co-organizer of the TAIA 2015 workshop, co-located with SIGIR 2015
- Co-organizer of the Delft Data Science Seminar on Online Education (March 2015)
- Co-organizer of the Placing Task benchmark @ MediaEval 2015
- Co-organizer of the TAIA 2014 workshop, co-located with SIGIR 2014
- Proceedings chair at WSDM 2014
- Member of the 2014 NWO selection committee Doctoral Grant for Teachers
- Participated in the 2014 edition of the Heidelberg Laureate Forum
- Successful completion of the University Teaching Qualification (also known as BKO or Basis Kwalificatie Onderwijs) in August 2014
- Invited lecture in the PhD course Data Science, offered by the Dutch Research School for Information and Knowledge Systems
- Co-organizer of the Placing Task benchmark @ MediaEval 2013
- Invited lecture in the PhD course Technology-enhanced Learning, offered by the Dutch Research School for Information and Knowledge Systems
- Part of the local organization team of SIGIR 2007