Zhaochun Ren
@zhaochun_ren
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Associate Professor @TMLeiden, @LIACS, @UniLeiden, working on Information Retrieval and Natural Language Processing. My tweets are my own.
Joined December 2009
@imsure318 @ShandongUni1901 @70LuonHfXrUWIz3 @zhaochun_ren @TMLeiden @LIACS @UniLeiden @emnlpmeeting The paper introduces Adaptive Context Compression for #RAG (ACC-RAG), a way to teach the #AI system to “skim smartly” — similar to how people don’t read every single word in an article but focus on the most relevant parts https://t.co/Kl7biHBkPl
#EMNLP2025 (2/2)
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Our #AI Engineering group’s @imsure318 co-authored "Enhancing #RAG Efficiency with Adaptive Context Compression" with Shuyu Guo (Shandong University) & Zhaochun Ren (Leiden University); it's being presented at #EMNLP2025 today (13:00 CST) https://t.co/Kl7biHBkPl
#GenAI (1/2)
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Testing not just what LLMs say but how they govern. Fairness vs. efficiency is no longer a philosophy debate but kind of a measurable capability. We introduce a Social Welfare Function (SWF) Leaderboard, evaluating LLMs as welfare allocators in simulated societies. ⚖️🤖
Can the smartest AI models fairly govern a society? 🤖⚖️ Introducing the Social Welfare Function (SWF) Leaderboard — the first benchmark evaluating LLMs as sovereign welfare allocators balancing fairness ⚖️ and efficiency 💰. 🎯 Why This Matters: As LLMs move from chatbots to
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The submission DDL of our (@YuboFang , @Solis_xurige , xinxin, @ZihanWa54274484, Junchen Fu, @joemonj , Weizhi Ma, @zhaochun_ren ) R^3AG 2025 workshop ( https://t.co/YIka7flHtM) at #SIGIRAP2025 @ACMSIGIR_AP has been extended to October 15, 2025.
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We look forward to new PC members. Please nominate yourself or someone you know who can join the PC for short papers at #ECIR2026.
Are you looking to gain experience in reviewing scientific papers? Do you know someone who can be an excellent reviewer? #ECIR26 invites you to nominate yourself or others to join the Program Committee (PC) for the short paper track. Apply👉: https://t.co/dIA1i2rATx
#ECIR #IR
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We are looking for reviewers for #ECIR2026 IR-for-Good Track. We encourage reviewers who have experience in societally-motivated IR research and/or can bring in interdisciplinary perspectives to inform the reviewing process to sign up here: https://t.co/CKo2meGukO.
#IR4Good
docs.google.com
Please sign up here if you are interested in reviewing for the IR-for-Good track at ECIR 2026. We are looking for reviewers that are doing IR or IR adjacent research and are also actively considering...
.@maria_heuss and I wrote a blog post reflecting on 🌶️ spicy questions like: What does it mean to have a special track for IR research that contributes to societal good? Shouldn’t all IR research be societally-beneficial? (contd.) https://t.co/Z2lAhTlXnm
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.@maria_heuss and I wrote a blog post reflecting on 🌶️ spicy questions like: What does it mean to have a special track for IR research that contributes to societal good? Shouldn’t all IR research be societally-beneficial? (contd.) https://t.co/Z2lAhTlXnm
bhaskar-mitra.github.io
(This blog post has been jointly co-authored by Maria Heuss and Bhaskar Mitra, co-chairs of ECIR’26 IR-for-Good Track. Please see the call for papers for more details about the track. Abstracts are...
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Join us at SIGIR-AP for two exciting workshops: R3AG 2025: The Second Workshop on Refined and Reliable Retrieval-Augmented Generation, and BREV-RAG: Beyond Relevance-based EValuation of RAG systems. Submit your work by September 30! Learn more at https://t.co/lR5yeAIaDM.
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Self-Evolving AI Agents are about to blow up 🚀🔥 New Survey Alert 🚨 From static LLMs ➡️ lifelong, adaptive agents 🌱🤖 A Comprehensive Survey of Self-Evolving AI Agents... — your roadmap to the future of AI that learns & evolves after deployment! 💡 https://t.co/TBYfLLdaD1
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We (Yubo Fang, @Solis_xurige, @xinxin, @ZihanWa54274484, Junchen Fu, @joemonj, Weizhi Ma, @zhaochun_ren) are holding the R^3AG 2025 workshop ( https://t.co/BaIVR8HKxT) at #SIGIRAP2025 (December 7-10, 2025, Xi'an, China).
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Excited to share two of our recent works at ACL 2025! 1/2🧑🎓 My first-year PhD student, Lance Calvin Gamboa, will present his work on Multilingual Bias at the Gender Bias in NLP workshop on August 1, 14:00–14:45.
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⌚️ Poster presentation for our TOIS paper "Graph-Enhanced Prompt Learning for Cross-Domain Contract Element Extraction" at SIGIR 2025 ⏲️ July 14 from 14:00 to 15:30 📷 Paper link: https://t.co/d5FdfzBul2 Please feel free to join us!🤝 #SIGIR2025
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Papers unaccepted by ICTIR are also encouraged to submit to the SIGIR Revise-and-Resubmit (R&R) track :)
#SIGIRAP2025 accepts "SIGIR-Revise-and-Resubmit" submissions! Learn more here: https://t.co/lpqd0M0v0d. ⏰Deadline: July 15
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IR friends, please note that #SIGIRAP2025 will be a #HybridConference. We hope this enables broader participation from our diverse community across the globe. Call for papers: https://t.co/QpJtYHE99T Abstracts due: July 15 Papers due: July 22
🎉 Exciting news for #SIGIRAP2025! This year, we're continuing our tradition of offering both face-to-face and remote participation options. Remote presentations are fully supported! Join us to participate from anywhere! 📡 #HybridConference
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🎉 Exciting news for #SIGIRAP2025! This year, we're continuing our tradition of offering both face-to-face and remote participation options. Remote presentations are fully supported! Join us to participate from anywhere! 📡 #HybridConference
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📢 The call for submission to the 2nd round of workshop proposals is out. Check it here: https://t.co/j4fBKB1Xkd Deadline: July 22, 2025
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#SIGIRAP2025 accepts "SIGIR-Revise-and-Resubmit" submissions! Learn more here: https://t.co/lpqd0M0v0d. ⏰Deadline: July 15
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🚨 Deadline Extended! 🚨 The #SIGIRAP2025 submission deadline is extended to July 15. You now have two more weeks to finalize your work and submit it!
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🕕 6 days left! Submit your abstract by July 1st to #SIGIRAP2025 here:
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🕑 Only 10 days left to submit your workshop proposal to #SIGIRAP2025.
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