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Harry Scells

@hscells.bsky.social
238 followers 157 following 1 posts

Assistant Professor @unituebingen.bsky.social @health-nlp.com, information retrieval researcher scells.me #IR #CS

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Reposted by Harry Scells
DESIRES 2027 @desires-conf.org · 21/09/2026
CLEF'26 starting in Jena! Will be great to see all the tasks people have been working on over the year. I'm sure there will be plenty of inspiration for new visions for the future of IR -> desires-conf.org/2027/ #CLEF2026 #InformationRetrieval #NLP #DESIRES2027
desires-conf.org
DESIRES 2027 – Cologne, Germany
The conference for discussing visionary ideas in search and retrieval systems
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LION Lab @lionlab.bsky.social · 17/09/2026
🦁LION Lab is hiring! 🧑‍🔬One fully funded PhD student (TVL-13 100%) for 3 years 💉Topic: Interpretability for Protein Language Models 👥Advised by @weissweiler.bsky.social together with Clara Schoeder 🌍Leipzig, Germany 🔗Apply by Oct 15: lionlabnlp.github.io/jobs/ai4pf/ Please share! #NLProc #NLP
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Sonja Utz @sonja-utz.de · 08/09/2026
PhD position in my lab! I'm looking for a candidate with a background in media psychology or communication science. Candidates who bridge our two research lines (social media use and HMC) are especially welcome. Please share! #DGPS2026 #ECC2026 iwm-tuebingen.de/de/karriere/...
iwm-tuebingen.de
IWM Tübingen
Researcher / PhD Position (m/f/d) in the Everyday Media Lab
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Ingo Frommholz @frommholz.org · 08/09/2026
Also ECIR 2027 short paper submission is open now! www.ecir2027.co.uk/call-for-sho... #ECIR2027
ecir2027.co.uk
Call for Short Papers
Short papers differ from full papers in that they present innovative new works, but may be narrower in scope or applications. Submissions may include preliminary ideas, but still should provide empirical or theoretical validation. Papers that stimulate discussion are particularly encouraged.
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Harry Scells @hscells.bsky.social · 27/08/2026
📣 The data for the UP2DATE@SCOLIA shared task about #systematicreview updates has now been released! Visit up2date.health-nlp.com for the details!
up2date.health-nlp.com
UP2DATE @ SCOLIA 2027 is a shared task focusing on the development of new methods to assist in updating systematic reviews.
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IRRJ @irrj.sigmoid.social.ap.brid.gy · 26/08/2026
#IRRJ will support the call for abstracts for the 5th International Conference on the Design of Experimental Search & Information REtrieval Systems #DESIRES, #DESIRES2027 irrj.org/announcement/view/358
irrj.org
Call for contributions for DESIRES 2027 | Information Retrieval Research
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Ingo Frommholz @frommholz.org · 12/08/2026
ECIR 2027 is the major European Information Retrieval conference taking place in Southampton, UK. We are calling for papers in the various tracks.
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BCS Information Retrieval Specialist Group @bcs-irsg.bsky.social · 12/08/2026
ECIR 2027 is our major European Information Retrieval conference taking place in Southampton, UK. We are calling for papers in the various tracks.
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ECIR 2027 @ecir2027.bsky.social · 10/08/2026
📢 ECIR 2027 Call for Papers 👉 www.ecir2027.co.uk/calls-home #ECIR2027 is the prime European forum for the presentation of original research in the field of #IR, and will take place as a physical (in-person) conference from 21-25 March 2027 at Southampton Football Club, Southampton, England, UK.
ecir2027.co.uk
Calls
see links below to the various calls for submissions:
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Lukas Gienapp @lgnp.bsky.social · 22/07/2026
Big thanks to @hscells.bsky.social for presenting this work in Melbourne, and of course also to my co-authors @martin-potthast.com , Andrew Yates, and Eugene Yang! doi.org/10.1145/3805...
doi.org
Topic-Specific Classifiers are Better Relevance Judges than Prompted LLMs | Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval
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Lukas Gienapp @lgnp.bsky.social · 22/07/2026
Super happy that our paper “Topic-Specific Classifiers are Better Relevance Judges than Prompted LLMs” just won Best Student Paper at #SIGIR2026🏆 It argues against the reflex to reach for an LLM whenever you need relevance judgments. What we found 🧵:
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Health NLP Lab @health-nlp.com · 20/07/2026
Melbourne is the place to be this week! 🇦🇺 #SIGIR2026 has officially kicked off, and while we miss Carsten Eickhoff, Harrisen Scells, and Gregory Polyakov back in the office, the Health NLP Lab is well represented in Melbourne this week.
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Djoerd Hiemstra 🍉 @djoerd.idf.social.ap.brid.gy · 01/07/2026
#DESIRES (the International Conference on the Design of Experimental Search & Information REtrieval Systems) is back! DESIRES has always been* the* conference for discussing (visionary!) search systems. Started in 2018 thanks to Gianmaria Silvello and Omar Alonso. General Chairs in 2027 are […]
idf.social
Original post on idf.social
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BCS Information Retrieval Specialist Group @bcs-irsg.bsky.social · 10/06/2026
Call for papers FDIA 2026: PhD Symposium on Future Directions in Information Access at ESSIR 2026 Present your research. Receive valuable feedback. Connect with fellow researchers. Accepted works can be presented @ecir2027.bsky.social! 2026.essir.eu/fdia/ #informationRetrieval #PhD #SummerSchool
2026.essir.eu
Symposium on Future Directions in Information Access
Symposium on Future Directions in Information Access
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Ingo Frommholz @frommholz.org · 10/06/2026
Excellent opportunity for PhD students and early-career researchers!
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Lukas Gienapp @lgnp.bsky.social · 28/04/2026
Two papers accepted at SIGIR'26 in Melbourne! Both tackle the same question: how do we scale IR evaluation reliably without compromising on human judgment as the gold standard? Spoiler: LLMs-as-a-judge does not work. 🧵1/5
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ECIR 2027 @ecir2027.bsky.social · 03/04/2026
#ECIR2027 is going to Southampton Football Club, England, UK in 2027! We encourage you to join us at www.ecir2027.co.uk and follow this page for updates. #IR #InformationRetrieval
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Ingo Frommholz @ingo.idf.social.ap.brid.gy · 03/04/2026
At our SCOLIA workshop at #ECIR2026 we introduced shared tasks. UP2DATE@SCOLIA focusses on the development of new methods to assist in updating systematic reviews. Interested? Check out up2date.health-nlp.com! @hscells @potthast @carsten @ecir2026.eu
up2date.health-nlp.com
up2date.health-nlp.com
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Arjen P. de Vries Timmers 🕊️ @arjen.idf.social.ap.brid.gy · 01/04/2026
Jan Heinrich Merker presents work - with Harrison Scells @hscells.bsky.social and Martin Potthast @martin-potthast.com - on better support infra for mining the Archive Query Log. See also: github.com/webis-de/archive-query-l… (Followup on the earlier SIGIR paper.) #ECIR2026
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Ingo Frommholz @ingo.idf.social.ap.brid.gy · 30/03/2026
Hello #ECIR2026, the proceedings of our SCOLIA workshop on Thursday are online – ceur-ws.org/Vol-4187. Looking forward to (hopefully) seeing you. Happy reading!
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Ingo Frommholz @frommholz.org · 30/03/2026
Hello #ECIR2026, the proceedings of our SCOLIA workshop on Thursday are online – ceur-ws.org/Vol-4187/. Looking forward to (hopefully) seeing you. Happy reading!
ceur-ws.org
CEUR-WS.org/Vol-4187 - Second International Workshop on Scholarly Information Access (SCOLIA 2026)
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ECIR 2026 @ecir2026.eu · 30/03/2026
🏆 Congratulations to our #ECIR2026 Reviewer Award & SPC Member Award recipients! Your commitment to high-quality peer review keeps our community thriving. Thank you! 🙏
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Jan Heinrich Merker @heinrich.merker.id · 30/03/2026
I've already collected my first two stickers for the @ecir2026.eu Collab-a-thon. If you're in Delft today, don't muss out the first collab-a-thon session at 4pm in LAB.115 🤝 #collab-a-thon #collaboration #research #ecir
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Ingo Frommholz @ingo.idf.social.ap.brid.gy · 21/03/2026
Going to @ecir2026.eu in Delft? Or need another reason to go there? Please drop by SCOLIA 2026, our Second International Workshop on Scholarly Information Access to enjoy some exciting presentations! Our programme is online now at sites.google.com/view/bir-ws/scolia…. See you in Delft!
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ML for Science @ml4science.bsky.social · 27/03/2026
We're hiring a Scientific Director for our AI Methods & Software Hub in Tübingen! This is a unique opportunity to build and lead a central hub at the intersection of cutting-edge ML research and scientific applications. Deadline: 30 April 2026. More info: uni-tuebingen.de/en/128980#c2...
The image promotes the job opening and includes the following text: "Open Position: Scientific Director // AI Methods and Software Hub (m/f/d, E14 TV-L, 100%) // Application Deadline: April 30, 2026
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Djoerd Hiemstra 🍉 @djoerd.idf.social.ap.brid.gy · 30/03/2026
#ECIR2026 opening by Avishek Anand with photos of Delft when it is not rainy
Stage with two large screens and a big audience
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Arjen P. de Vries Timmers 🕊️ @arjen.idf.social.ap.brid.gy · 29/03/2026
One of my fav bars in Delft is www.locuspublicus.nl #ecir2026 #beer
locuspublicus.nl
Locus Publicus Delft – sinds 1978
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Djoerd Hiemstra 🍉 @djoerd.idf.social.ap.brid.gy · 29/03/2026
Quite impressive! The Radboud University Information Retrieval group's contributions to #ECIR2026: nice poster made by @harrieo.bsky.social
Poster with program of all Radboud contributions.
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ECIR 2026 @ecir2026.eu · 28/03/2026
Tomorrow, ECIR 2026 kicks off in Delft! 🎉 Day 1: tutorials & workshops at TU Delft's Aula, ending with a welcome reception. With over registered 450 attendees it's going to be a great few days. Don't forget: clocks spring forward tonight! ☀️🕐 We're bagged and ready 🎒 #ECIR2026 #IR #NLP #RecSys
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Jakob Macke @jakhmack.bsky.social · 28/03/2026
We’re launching a new AI Methods & Software Hub in the ML cluster and are looking for a Director to build and lead it! Shape how ML/AI and software drive scientific discovery—in close collaboration with AI and domain scientists—within an extremely vibrant and collaborative ecosystem!
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IRRJ @irrj.sigmoid.social.ap.brid.gy · 02/03/2026
The presentations for the #IRRJ session at the at the 48th European Conference on Information Retrieval #ECIR2026 are now in the conference schedule at: ecir2026.eu/programme/program-sched…
ecir2026.eu
IRRJ Papers Presentations
irrj papers presentations
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Humboldt-Stiftung @humboldt-foundation.de · 25/03/2026
Become part of the DAAD & Humboldt Community 👋– a social network for fellows, alumni, and partners! Find out more and join now: daad-humboldt-community.de @daadworldwide.bsky.social
Three people – two men and a woman in the middle – are standing with their backs to the camera; they are standing on a cliff and looking into the distance. They have their arms around each other. The text “Join the DAAD & Humboldt Community” and the community’s logo are also visible.
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Maik Fröbe @maik-froebe.bsky.social · 26/03/2026
I am happy to share that I defended my PhD thesis this week. I want to thank all the people I collaborated with and met at conferences and workshops over the years! Especially a big thank you to my PhD supervisor, Matthias Hagen, and to Laura Dietz and Udo Kruschwitz for reviewing my thesis.
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Ingo Frommholz @frommholz.org · 21/03/2026
Going to @ecir2026.eu in Delft? Or need another reason to go there? Please drop by SCOLIA 2026, our Second International Workshop on Scholarly Information Access to enjoy some exciting presentations! Our programme is online now at sites.google.com/view/bir-ws/.... See you in Delft!
sites.google.com
SCOLIA (BIR) - SCOLIA 2026
SCOLIA 2026, the Second International Workshop on Scholarly Information Access, will take place at ECIR 2026 in Delft, The Netherlands. The aim of the SCOLIA (SChOLarly Information Access) workshop, f...
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ECIR 2026 @ecir2026.eu · 05/03/2026
CFP – ECIR 2026 Join us at the 48th European Conference on Information Retrieval (ECIR 2026) 📍 29 March – 2 April 2026 📍 Delft, The Netherlands 🔎 Full program: ecir2026.eu/programme/pr... 📝 Register now: ecir2026.dryfta.com/registration... We look forward to welcoming you to Delft at ECIR 2026!
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Webis Group @webis.de · 27/10/2025
We just released "German Commons", the largest openly-licensed German text dataset for LLM training: 154B tokens with clear usage rights for research and commercial use. huggingface.co/datasets/coral-nlp/german-commons
huggingface.co
coral-nlp/german-commons · Datasets at Hugging Face
We’re on a journey to advance and democratize artificial intelligence through open source and open science.
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IRRJ @irrj.sigmoid.social.ap.brid.gy · 09/09/2025
We are proud to announce that we are now indexed by @dblp! Click below for Volume 1, Number 1, 2025 dblp.org/db/journals/irrj/irrj1.html
dblp.org
dblp: IRRJ, Volume 1
Bibliographic content of IRRJ, Volume 1
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ECIR 2026 @ecir2026.eu · 01/09/2025
The organization of #ECIR2026 has started! We just had our first call with all track chairs. With the calls now finalized, online and distributed across mailing lists, we’re moving on to the rest of the conference preparation! @ecir2026.eu 📍 Delft, 30 Mar – 2 Apr 2026 👉 ecir2026.eu
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Webis Group @webis.de · 18/07/2025
Honored to win the ICTIR Best Paper Honorable Mention Award for "Axioms for Retrieval-Augmented Generation"! Our new axioms are integrated with ir_axioms: github.com/webis-de/ir_... Nice to see axiomatic IR gaining momentum.
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Webis Group @webis.de · 16/07/2025
Congrats to the authors @lgnp.bsky.social @timhagen.bsky.social @maik-froebe.bsky.social @matthias-hagen.bsky.social @benno-stein.de @martin-potthast.com @hscells.bsky.social from @unikassel.bsky.social @hessianai.bsky.social @scadsai.bsky.social @unituebingen.bsky.social @uni-jena.de & Uni Weimar
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Webis Group @webis.de · 16/07/2025
Happy to share that our paper "The Viability of Crowdsourcing for RAG Evaluation" received the Best Paper Honourable Mention at #SIGIR2025! Very grateful to the community for recognizing our work on improving RAG evaluation.  📄 webis.de/publications...
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Ferdinand Schlatt @fschlatt.bsky.social · 16/07/2025
Want to know how to make bi-encoders more than 3x faster with a new backbone encoder model? Check out our talk on the Token-Independent Text Encoder (TITE) #SIGIR2025 in the efficiency track. It pools vectors within the model to improve efficiency dl.acm.org/doi/10.1145/...
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Maik Fröbe @maik-froebe.bsky.social · 16/07/2025
Now @fschlatt.bsky.social presents "TITE: Token-Independent Text Encoder for Information Retrieval" at #SIGIR2025 Paper: webis.de/publications...
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Maik Fröbe @maik-froebe.bsky.social · 15/07/2025
Lukas Gienapp presents "The Viability of Crowdsourcing for RAG Evaluation" at #SIGIR2025 The paper is available at: webis.de/publications...
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Damiano Spina @damianospina.com · 15/07/2025
Lucky to witness #IRRJ editor-in-chief @djoerd.idf.social.ap.brid.gy signing a copy of the first edition of @irrj.sigmoid.social.ap.brid.gy for Ian Soboroff, author of the paper “Don’t Use LLMs to Make Relevance Judgments” in the volume. #SIGIR2025 irrj.org/article/view...
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Ferdinand Schlatt @fschlatt.bsky.social · 14/07/2025
@mrparryparry.bsky.social presenting our work on reproducing TREC DL 2019 judgements and the implications for evaluating modern ranking models on modern collections. Paper: arxiv.org/abs/2502.20937
arxiv.org
Variations in Relevance Judgments and the Shelf Life of Test Collections
The fundamental property of Cranfield-style evaluations, that system rankings are stable even when assessors disagree on individual relevance decisions, was validated on traditional test collections. ...
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Djoerd Hiemstra 🍉 @djoerd.idf.social.ap.brid.gy · 14/07/2025
#SIGIR2025 excellent reviewers
Excellen reviewer on screen
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Ferdinand Schlatt @fschlatt.bsky.social · 13/07/2025
Thank you Carlos for the shout-out of Lightning IR in the LSR tutorial at #SIGIR2025 If you want to fine your own LSR models, check out our framework at github.com/webis-de/lig...
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ScaDS.AI Dresden/Leipzig @scadsai.bsky.social · 10/07/2025
From July 13-17, 2025, @scadsai.bsky.social will join the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval in Padua, Italy. Our researchers have made the following contributions. Learn more about #SIGIR2025: 👉 sigir2025.dei.unipd.it
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Webis Group @webis.de · 22/06/2025
Congratulations to the authors @lgnp.bsky.social @deckersniklas.bsky.social @martin-potthast.com @hscells.bsky.social ! 📄 Preprint: arxiv.org/abs/2407.21515 💻 Code: github.com/webis-de/ada...
arxiv.org
Learning Effective Representations for Retrieval Using Self-Distillation with Adaptive Relevance Margins
Representation-based retrieval models, so-called biencoders, estimate the relevance of a document to a query by calculating the similarity of their respective embeddings. Current state-of-the-art bien...
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