webis_de Profile Banner
Webis Group Profile
Webis Group

@webis_de

Followers
717
Following
364
Media
132
Statuses
409

Research group working the fields of Information Retrieval, Natural Language Processing, Data Mining, Machine Learning, and Artificial Intelligence.

Hannover/Jena/Leipzig/Weimar
Joined September 2019
Don't wanna be here? Send us removal request.
@webis_de
Webis Group
13 days
Honored to win the ICTIR Best Paper Honorable Mention Award for "Axioms for Retrieval-Augmented Generation"!.Our new axioms are integrated with ir_axioms: Nice to see axiomatic IR gaining momentum.
Tweet media one
1
5
15
@webis_de
Webis Group
13 days
Come join us at the poster session at ICTIR 2025 to discuss:.- Axioms for Retrieval-Augmented Generation - Learning Effective Representations for Retrieval Using Self-Distillation with Adaptive Relevance Margins
Tweet media one
1
1
6
@webis_de
Webis Group
13 days
Thrilled to announce that @MattiWiegmann has successfully defended his PhD! 🎉🧑‍🎓 Huge congratulations on this incredible achievement!.#PhDDefense #AcademicMilestone
Tweet media one
0
0
6
@webis_de
Webis Group
15 days
0
0
5
@webis_de
Webis Group
15 days
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. 📄
Tweet media one
1
6
20
@webis_de
Webis Group
1 month
RT @maik_froebe: Do not forget to participate in the #TREC2025 Tip-of-the-Tongue (ToT) Track :). The corpus and baselines (with run files)….
0
7
0
@webis_de
Webis Group
1 month
Results on BEIR demonstrate that our method matches teacher distillation effectiveness, while using only 13.5% of the data and achieving 3-15x training speedup. This makes effective bi-encoder training more accessible, especially for low-resource settings.
Tweet media one
1
0
0
@webis_de
Webis Group
1 month
The key idea: we can use the similarity predicted by the encoder itself between positive and negative documents to scale a traditional margin loss. This performs implicit hard negative mining and is hyperparameter-free.
Tweet media one
1
0
0
@webis_de
Webis Group
1 month
Our paper on self-distillation for training bi-encoders got accepted at #ICTIR2025! By exploiting pretrained encoder capabilities, our approach eliminates expensive teacher models and batch sampling while maintaining the same effectiveness.
Tweet media one
1
2
6
@webis_de
Webis Group
4 months
RT @fschlatt1: What an honor to receive both the best short paper award and the best paper honourable mention award at #ECIR2025. Thank you….
0
6
0
@webis_de
Webis Group
4 months
Tweet media one
0
1
0
@webis_de
Webis Group
4 months
🧵 4/4 Credit and thanks to the author team.@LukasGienapp, Tim Hagen, @maik_froebe,.@matthias_hagen, @bennostein, .@martinpotthast, and @hscells .– you can also catch some of them at #ECIR2025 currently if you want to chat about RAG!.
0
1
7
@webis_de
Webis Group
4 months
🧵 3/4 This fundamentally challenges previous assumptions about RAG evaluation and system design. But we also show how crowdsourcing offers a viable and scalable alternative! Check out the paper for more. 📝 Preprint @ ️Code/Data is openly available.
1
1
4
@webis_de
Webis Group
4 months
🧵2/4 Key findings: 1️⃣ Humans write best? No! LLM responses are rated better than human. 2️⃣ Essay answers? No! Bullet lists are often preferred. 3️⃣ BLEU? No! Reference-based metrics don't align with human preferences. 4️⃣ LLMs as judges? No! Prompted models label inconsistently.
1
2
4
@webis_de
Webis Group
4 months
📢 Our paper "The Viability of Crowdsourcing for RAG Evaluation" has been accepted to #SIGIR2025 ! We compared how good humans and LLMs are at writing and judging RAG responses, assembling 1800+ responses across 3 styles, and 47K+ pairwise judgments in 7 quality dimensions. 🧵➡️
Tweet media one
1
5
16
@webis_de
Webis Group
4 months
RT @tomaarsen: I've just ported the excellent monoELECTRA-{base, large} reranker models from @fschlatt1 & the research network Webis Group….
0
18
0
@webis_de
Webis Group
11 months
RT @christopher: 4 million @lichess chess puzzles
Tweet media one
0
5
0