Associate Professor

Web Information Systems, TU Delft


  • Slides of my ML for IR lecture given at ESSIR 2019
  • Freshly elected member of the ACM SIGIR executive committee, my three-year term starts July 1, 2019!
  • My talk (June 12, 2019) at the Delft Deep Learning Colloqium
  • SEA meetup slides (April 26, 2019)
  • If you are interested in a fully-funded 4-year PhD or a 2-year Postdoc position in information retrieval and related areas (NLP, machine learning) please get in touch (April 2019)!
  • Between February and April 2019 I was co-teaching the MSc Information Retrieval course at TU Delft. All materials are available on GitHub.
  • Blog post about our latest Information Retrieval Journal article is up where we explore the impact of group size on collaborative search effectiveness.
  • Three colleagues and I have set up a monthly Delft AI meetup group. Join it if you are a local!
  • As of October 2018 I have created extensive lectures materials (assignments, transcripts, demo applications, exams) for my first year BSc Computer Science & Engineering web technology lectures.
  • Our paper Contrasting search as a learning activity with instructor-designed learning led by Felipe Moraes with Sindunuraga Rikarno Putra, a Master student in my team, as second author, accepted as a full paper at CIKM 2018 (blog post).

My career

For a brief and compact overview, take a look at my 1-page CV.

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 I am currently focusing on large-scale learning analytics and how to incorporate search into the human learning process at scale (lately through the use of conversational search). In 2016 and 2017 I have been awarded two prestigious personal grants by 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. TU Delft is a very active provider of Massive Open Online Courses (MOOCs) on the edX platform, which provides a rich experimental playground for my Lambda-Lab team.

In 2018, I gave an invited keynote at the French IR conference CORIA 2018 on the topic of Search as Learning:

A very condensed overview of my team’s research efforts over the last ~4 years can be found here (lots of MOOC work as well as search as learning):


PO Box 5031
2600 GA Delft
The Netherlands

Office: Van Mourik Broekmanweg 6, East Wing 04.100
Email: c.hauff[at] or claudia.hauff[at]

Current members of my lab

  • Arthur Barbosa Câmara (PhD student, since 11/2018)
  • Gustavo Penha (PhD student, since 11/2018)
  • Felipe Moraes (PhD student, ongoing)
  • Manuel Valle Torre (Delft Data Science research engineer, ongoing)
  • Nirmal Roy (PhD student, since 09/2019)
  • Huiyuan Lai (Phd student, since 09/2019)

Past members of my lab

Lab software

  • 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.
  • ELAT is a browser-based edX logfile analysis tool that turns edX logfiles into an easy to query database, all within the confines of the local browser. The lead developer is Manuel Valle Torre.


  • 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