RSTLess group @RSTLessGroup
@SapienzaRoma, @DIAGSapienza Research Group PI: Fabrizio Silvestri @fabreetseo rstless.it Rome, Italy Joined April 2024-
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🎉 Two papers at #SIGIR2026! 🐱 CATS: Clustering + Thompson Sampling for smarter negative mining in RecSys. +20% NDCG@10. ✂️ Load-sensitive Selective Pruning: dynamic embedding dimensionality for dense retrieval under load. +400% queries served. See you in Melbourne! #IR #RecSys
Giulia Iadisernia is a first-year PhD student in Data Science at Sapienza, supervised by Fabrizio Silvestri a. Her research focuses on the #trustworthiness and #explainability of LLMs. She also collaborates with the Applied Research Team at the Bank of Italy.
Alessia Borghini is a first-year PhD student in the National Doctorate in AI supervised by Fabrizio Silvestri. Her research focuses on Mechanistic Interpretability for #AISafety, aiming to understand LLMs and improve alignment and reliability. Fell free to reach out!!
New paper from @wanifarooq848 on Vision Language Models! Read it on arxiv! #RSTLess #Sapienza
Your VLM gives the same answer before and after a tiny image change. So it's robust, right? Wrong. In our new paper, we show that VLMs can preserve their predictions while their internal representations drift to regions normally occupied by completely unrelated images. 🧵👇
Gavriel Di Nepi is a first-year PhD student in Data Science at Sapienza under the supervision of prof. @fabreetseo . His research focuses on human-inspired memory for #AI to boost performance and reasoning, in collaboration with @bakerhughesco. #RSTLess #Sapienza
Meet Maria Vittoria Vestini, 1st-year PhD student in Data Science at Sapienza University of Rome, supervised by @fabreetseo. Her research explores interactions and learning dynamics between large and small language models. Learn more: rstless.it #RSTLess #Sapienza
By combining the expressive power of sheaves with a principled treatment of directionality, our method achieves consistent relative accuracy improvements over prior methods.
Directional Sheaf Hypergraph Networks: Unifying Learning on Directed and Undirected Hypergraphs accepted at #ICLR2026!! Work done by Emanuele Mule, Stefano Fiorini, @AntonioPuri00, @_FedeSiciliano_ , Stefano Coniglio and @fabreetseo. Paper: arxiv.org/pdf/2510.04727
- We introduce the notion of Directed Cellular Sheaves over directed hypergraphs - From this construction, we derive the Directed Sheaf Hypergraph Laplacian, a complex-valued Hermitian operator that unifies and generalizes existing graph and hypergraph convolutional operators.
It presents theoretical and empirical results answering to the question: "𝐶𝑎𝑛 𝑀𝑎𝑗𝑜𝑟𝑖𝑡𝑦 𝑉𝑜𝑡𝑖𝑛𝑔 𝑎𝑐ℎ𝑖𝑒𝑣𝑒 𝑡ℎ𝑒 𝑡ℎ𝑒𝑜𝑟𝑒𝑡𝑖𝑐𝑎𝑙𝑙𝑦 𝑜𝑝𝑡𝑖𝑚𝑎𝑙 𝑙𝑎𝑏𝑒𝑙 𝑒𝑠𝑡𝑖𝑚𝑎𝑡𝑖𝑜𝑛 𝑒𝑟𝑟𝑜𝑟 𝑎𝑛𝑑 𝑢𝑛𝑑𝑒𝑟 𝑤ℎ𝑎𝑡 𝑐𝑜𝑛𝑑𝑖𝑡𝑖𝑜𝑛𝑠?"
𝐓𝐡𝐞 𝐌𝐚𝐣𝐨𝐫𝐢𝐭𝐲 𝐕𝐨𝐭𝐢𝐧𝐠 𝐏𝐚𝐫𝐚𝐝𝐢𝐠𝐦 𝐒𝐡𝐢𝐟𝐭: 𝐖𝐡𝐞𝐧 𝐏𝐨𝐩𝐮𝐥𝐚𝐫 𝐌𝐞𝐞𝐭𝐬 𝐎𝐩𝐭𝐢𝐦𝐚𝐥 accepted at #AISTATS2026! Work done by @AntonioPuri00, @mariasofiabuc, Anil Kumar Nelakanti, @Andrea_Bacciu, @amantrac, @fabreetseo! Paper arxiv.org/pdf/2502.12581
5/5 This offers a complementary perspective on mechanistic interpretability: from finding circuits to shaping and composing them during learning. Looking forward to discussions at #ICLR! Thanks to Samuele Fonio, Simone Monaco Nicola Saccomanno and @fabreetseo !
1/5 Composable Sparse Subnetworks via the Maximum-Entropy Principle will be presented at #ICLR2026 🎉 👉 openreview.net/forum?id=IHwx5… It’s about circuits, sparsity, and compositionality, with a training-time loss that shapes how circuits form. Congrats @frances55037016 !
4/5 Crucially, these circuits are composable. We show they can be recombined into generalist models, behaving like modular building blocks rather than isolated explanations.
3/5 We introduce a training-time objective that steers circuit formation toward specific concepts. After training, we use pruning to extract class-specific circuits: functional subnetworks specialized for a subset of classes.
2/5 Most mechanistic interpretability work finds circuits post hoc, after training a model. We ask a different question: can we control which concepts shape circuits during training?
Work done by: Andrea Drago, @mariasofiabuc , @frances55037016 , Marius Michetti, @_FedeSiciliano_ , @fabreetseo and Luca Becchetti.
Paper accepted at #AISTATS2026!! 𝐑𝐚𝐧𝐤 𝐋𝐢𝐟𝐭𝐢𝐧𝐠 𝐚𝐧𝐝 𝐑𝐚𝐧𝐝𝐨𝐦 𝐍𝐨𝐧-𝐋𝐢𝐧𝐞𝐚𝐫 𝐌𝐚𝐩𝐬: once the size of a one-hidden-layer neural network exceeds a threshold, the hidden representations are linearly independent with high probability. #RSTLess #Sapienza
@chiaradercoli is 1st-year PhD student in the National Doctorate in AI, supervised by @pl219_Cambridge . 🔬 AI for Medicine | Digital Twins | ODEs 🧬 RNA pathways (T1D, Periodontitis) 🤖 LLMs for clinical & biomedical data Open to collaborations! feel free to reach out
Alessio Borgi @alessioborgi17
1 Followers 121 Following PhD @ Sapienza University & University of Cambridge | Graph Neural Networks, Geometric Deep Learning & Topological Deep Learning
Kirill Yudin @kkkkkkkkkkyudin
4 Followers 86 Following
Ilie Sarpe @sa_Ilie
99 Followers 263 Following Postdoc researcher @KTHuniversity in CS, got my PhD at @UniPadova. Working on data mining algorithms for Temporal Networks and Social Network Analysis 👀
Alessia Borg @BorgAlessia
10 Followers 179 Following Master's student in Artificial Intelligence and Robotics @SapienzaRoma 🤖
Seightey @Seightey32eeH
34 Followers 271 Following
OmnAI Lab @OmnAI_Lab
67 Followers 85 Following OmnAI lab, @SapienzaRoma, Computer Science Department (DI) PI: @_iAc
biz @msbiz89
216 Followers 1K Following
Yuanbo Yang @YuanboYang60742
208 Followers 2K Following Incoming PhD @ UCSD @haoailab | ex. @ZJU_China @Hangdian | Exploring Vision and Language 🌐
Antonio Norelli @noranta4
749 Followers 768 Following I replicate our skills with machines to realize what does (not) really make us humans. AI Postdoc @MIT, prev @UniofOxford & @SapienzaRoma, fndr @BetterScholar
Ali Ghasemi @Ali_Ghasemi7899
9 Followers 20 Following PhD in Data Science 🤖 Master’s in AI @ Sapienza Bachelor's in CE @ Sharif
Claudio Schiavella @claschi21
0 Followers 14 Following 🤖 PhD researcher in Computer Vision @ ALCOR Lab Sapienza 🐛 Partnering with Tecnoseta for the new Made in Italy silk 4.0 📖 Passionate about education
Emanuele Giona @emanuele_giona
93 Followers 319 Following Software Engineer @Uber | PhD Computer Science from @SapienzaRoma
Federica Baccini @BacciniFederica
40 Followers 117 Following Assistant Professor (RTDA), Università di Roma La Sapienza. Working on multilayer and higher order networks.
Gabriele Sarti @gsarti_
2K Followers 2K Following Open-source interpretability to seize the means of prediction. Postdoc w/ @davidbau @ndif_team @Northeastern. Prev: @GroNLP, @amazonscience
triquetricmarten @triquetricmart1
51 Followers 768 Following Treading a delicate path on the markov boundary since '95
Arkobie @Arkobie6883072
39 Followers 432 Following
Albert @ZihengChen1993
55 Followers 621 Following Researcher in XML，Reinforcement learning and recommender system.
RacheleSprugnoli - @R... @RSprugnoli
2K Followers 1K Following Computational linguist and digital humanist | @AILC_NLP publicity co-chair | Formerly @unipr, @ERC_LiLa, @DH_FBK
Joe Stacey @_joestacey_
2K Followers 2K Following NLP postdoc at @SheffieldNLP Ex @Imperial_NLP PhD, @Apple AI/ML Scholar, @UCL MSc Model robustness and now uncertainty quantification
Francesca Pezzuti @f_pezzuti
29 Followers 162 Following PhD student at @DII_Pisa, focusing on Information Retrieval 🔎📄💻
Negar Arabzadeh @NegarEmpr
1K Followers 1K Following Postdoc @UCBerkeley @BerkeleySky |👩🏻💻Prev @google, @MSFTResearch, @SpotifyResearch | 📚@UWaterloo | Interested in Information Retrieval
Keigo Sakurai @nukemusso
681 Followers 233 Following Asst. Prof. @HU_LMD | Research Interest: RecSys/Music/Finance/Fashion Opinions are my own and do not represent my affiliation.
Andrea Cimino @a_cimino
124 Followers 445 Following Member of the @italiaNLP_Lab at the Institute for Computational Linguistics of Pisa, Italy. Bass and guitar player when i have some spare time ;-)
Maria Diana Calugaru @diana_calugaru
1 Followers 6 Following
Lev Telyatnikov @lev_telyatnikov
339 Followers 332 Following Moving forward Topological Deep Learning @SapienzaRoma (PhD)
Nicola Saccomanno @sacco_nico
80 Followers 524 Following Assistant Professor. PhD in Computer Science @uniud. #NeuroSymbolicAI, #Interpretability, #MachineLearning #DataScience and #AI
Thurnore @Thurnorejpa3wS
31 Followers 797 Following
ai4coolerplanet @ai4coolerplanet
3 Followers 30 Following AI for a Cooler Planet: Tackling Environmental Challenges with Neural Networks Workshop @ IJCNN 2025 Conference, Rome, July 4 2025.
Silver @Silver22_2k
15 Followers 190 Following Driven by a love for mathematics, passionate about AI technologies
Emanuele Frasca @noostale
3 Followers 233 Following Computer Engineer, AI and Robotics @SapienzaRoma
Alberto Carlo Maria M... @alberto_mancino
208 Followers 291 Following PostDoc at the Polytechnic University of Bari. In love with RecSys, Graph Learning, Knowledge Graphs and Differential Privacy.
Luca Maria Aiello (la... @lajello
3K Followers 1K Following Professor of Data Science @ITUkbh Copenhagen, member of @nerdsitu & @AiCentreDK. Before: @BellLabs, @YahooResearch, @IUBloomington, @ISI_Fondazione fellow.
Riccardo Fosco Gramac... @riccardofosco
64 Followers 108 Following PhD Student in AI for Audiovisual Media @IspammL, @SapienzaRoma | Visiting Academic @c4dm, @QMUL
Antonio Pio Ricciardi @antonioricc93
110 Followers 487 Following Ph.D. student in Reinforcement Learning @SapienzaRoma, Computer Science
Marco Pacini @MarcoPacini4
207 Followers 291 Following PhD Student in Geometric Deep Learning at MobS @FBK_research
Searrey @Searreybhkhwpp
14 Followers 473 Following
ludocomito @ludocomito
369 Followers 318 Following Exploring the intersection of artificial intelligence and science, with a focus on healthcare and biotech applications.
Yashar Deldjoo @yashardel
859 Followers 2K Following Associate Professor @polibaofficial; #RecSys #GenerativeAI #FairML #TrustworthyAI #Risks #Harm #Evaluation
Syrine Enneifer @SyrineEnneifer
28 Followers 103 Following
Christine Bauer @christine_bauer
959 Followers 334 Following I am a researcher, taking the human perspective in the interaction with intelligent systems. Yes, that integrates research on technologies AND humans...
JohnSnowLabs @JohnSnowLabs
44K Followers 28K Following Helping healthcare and life science organizations put AI to work faster with state-of-the-art LLM & NLP.
GER @toRedWorld
1 Followers 1K Following
hrjoshi28_DEV @Hrjoshi28D
12 Followers 590 Following Optimistic Philophile :) Working as Machine Learning Engineer and Software Developer. Loves Paradoxes...
Damiano Spina 🦋@da... @damiano10
1K Followers 1K Following PhD in Comp Sci., former DECRA, Senior Lecturer, @RMITComputing, @AdmsCentre. CM Camaleão, Capoeira @ACDP_Australia. Percussionist at @Wombatuque.
Behrooz Mansouri @behrouzmansoury
162 Followers 182 Following Assistant Professor of Computer Science, University of Southern Maine
Elena Muia` @ElenaMuia
2 Followers 37 Following Student of "Applied Computer Science and Artificial Intelligence" at Università la Sapienza di Roma
Ali Ghasemi @Ali_Ghasemi7899
9 Followers 20 Following PhD in Data Science 🤖 Master’s in AI @ Sapienza Bachelor's in CE @ Sharif
Kosta Derpanis (sabba... @CSProfKGD
81K Followers 199 Following #CS Assoc Prof @YorkUniversity, #ComputerVision Researcher, @VectorInst Affiliate, @UofT status only, @ELLISforEurope Member #CVPR2026 #ECCV2026 Publicity Chair
Thinking Machines @thinkymachines
154K Followers 1 Following Thinking, beeping, and booping. @tinkerapi
Emanuele Giona @emanuele_giona
93 Followers 319 Following Software Engineer @Uber | PhD Computer Science from @SapienzaRoma
Federica Baccini @BacciniFederica
40 Followers 117 Following Assistant Professor (RTDA), Università di Roma La Sapienza. Working on multilayer and higher order networks.
Albert @ZihengChen1993
55 Followers 621 Following Researcher in XML，Reinforcement learning and recommender system.
RacheleSprugnoli - @R... @RSprugnoli
2K Followers 1K Following Computational linguist and digital humanist | @AILC_NLP publicity co-chair | Formerly @unipr, @ERC_LiLa, @DH_FBK
Francesca Pezzuti @f_pezzuti
29 Followers 162 Following PhD student at @DII_Pisa, focusing on Information Retrieval 🔎📄💻
Keigo Sakurai @nukemusso
681 Followers 233 Following Asst. Prof. @HU_LMD | Research Interest: RecSys/Music/Finance/Fashion Opinions are my own and do not represent my affiliation.
Andrea Cimino @a_cimino
124 Followers 445 Following Member of the @italiaNLP_Lab at the Institute for Computational Linguistics of Pisa, Italy. Bass and guitar player when i have some spare time ;-)
Antonio Pio Ricciardi @antonioricc93
110 Followers 487 Following Ph.D. student in Reinforcement Learning @SapienzaRoma, Computer Science
Marco Pacini @MarcoPacini4
207 Followers 291 Following PhD Student in Geometric Deep Learning at MobS @FBK_research
Riccardo Fosco Gramac... @riccardofosco
64 Followers 108 Following PhD Student in AI for Audiovisual Media @IspammL, @SapienzaRoma | Visiting Academic @c4dm, @QMUL
Luca Soldaini 🎀 @soldni
13K Followers 1K Following data mines are my passion ⛏️ mts @MicrosoftAI / ex co-lead Olmo @allen_ai / pfp @YanhongLi2062 / thoughts are mine, leave my employer alone / 🌈
Sole Pera @DrCh0le
2K Followers 640 Following Associate Professor @wisdelft @tudelft, Misses Rosario, 🧉 Enthusiast, #RecSys #InformationRetrieval #IR4U2 #KidRec
Pinecone @pinecone
28K Followers 146 Following Pinecone is the knowledge infrastructure for AI at scale.
Syrine Enneifer @SyrineEnneifer
28 Followers 103 Following
Gustavo Penha @_Guz_
815 Followers 561 Following Research Scientist @Spotify · Working with IR, RecSys, NLP · PhD from @tudelft · ex @AmazonScience · https://t.co/SMu8BlyfIb
Joe Stacey @_joestacey_
2K Followers 2K Following NLP postdoc at @SheffieldNLP Ex @Imperial_NLP PhD, @Apple AI/ML Scholar, @UCL MSc Model robustness and now uncertainty quantification
Yashar Deldjoo @yashardel
859 Followers 2K Following Associate Professor @polibaofficial; #RecSys #GenerativeAI #FairML #TrustworthyAI #Risks #Harm #Evaluation
Christian Maria Giann... @giannetti112
2 Followers 1 Following
Timothy Sweetser @Hacktuarial
358 Followers 1K Following personalization and machine learning at @hbomax
Bora Edizel @Edizell
158 Followers 413 Following Research Scientist at Warner Bros. Discovery Guitarist at Balkumbia and Abudbuls From Anatolia Lives in Miami
Davide Buffelli @DBuffelli
180 Followers 324 Following AI Researcher at MediaTek Research | PhD from @UniPadova, prev. intern at Meta AI, Samsung AI | Graph Representation Learning | Graph Neural Networks.
Lucas Beyer (bl16) @giffmana
139K Followers 601 Following Researcher (now: Meta. ex: OpenAI, DeepMind, Brain, RWTH Aachen), Gamer, Hacker, Belgian. Anon feedback: https://t.co/xe2XUqkKit ✗DMs → email
Lucie Charlotte Magis... @LC_Magister
64 Followers 275 Following PhD Student @Cambridge_CL, focusing on Explainability and Interpretability for GNNs
SIGKDD 2026 @kdd_news
10K Followers 508 Following The official feed for the ACM SIGKDD Community and #KDD2026 Conference
Damiano Spina 🦋@da... @damiano10
1K Followers 1K Following PhD in Comp Sci., former DECRA, Senior Lecturer, @RMITComputing, @AdmsCentre. CM Camaleão, Capoeira @ACDP_Australia. Percussionist at @Wombatuque.
Sharvaree Vadgama @SharvVadgama
1K Followers 2K Following post doc with @yuqirose | everything Geometric + Generative models | previously @AmlabUva | organizer @GRaM_org_ and @scifordl | 🇺🇸🇳🇱🇮🇳| she/her
Riccardo Marin @ CVPR @_R_Marin_
273 Followers 500 Following Post-doc researcher at TUM Computer Vision Group, MCML
Behrooz Mansouri @behrouzmansoury
162 Followers 182 Following Assistant Professor of Computer Science, University of Southern Maine
AI Conference DL Coun... @DlCountdown
21K Followers 11 Following Bot. I daily tweet progress towards machine learning and computer vision conference deadlines. Maintained by @chriswolfvision.
Washington Cunha @pqpwas
30 Followers 154 Following
Hamed Zamani @HamedZamani
3K Followers 1K Following Assoc. Prof. @manningcics. Assoc. Director of the Center for Intelligent Information Retrieval (CIIR). Interested in IR, NLP & ML.
Vladik @Kostoglodov
229 Followers 263 Following Machine learning enthusiast / Kaggle competitions expert inst/tg: vkost
Agostina Calabrese �... @agostina_cal
876 Followers 618 Following Member of Technical Staff at @cohere 👩🏻💻 | PhD in Natural Language Processing from the University of Edinburgh 🎓 | (she/her)
Tiziano Piccardi @tizianopiccardi
1K Followers 892 Following Assistant Professor @JohnsHopkins - @HopkinsDSAI | Prev: @StanfordHCI & @EPFL_en
sevgi yigit @sevygt
37 Followers 305 Following Researcher on information retrieval, text mining Phd @METU_ODTU
Patrizio Dazzi @patriziodazzi
291 Followers 965 Following Editor-in-Chief of the Intl J. of Network and Distributed Comp. Former scientific Coord. @BasmatiEUK and Coord. of @ACCORDION project. Co-director of PAI Lab.
Corrado Monti @c0rrad0m0nti
777 Followers 2K Following PROFILE NO LONGER IN USE ➡️ https://t.co/nkPTlCfVbD Researcher (opinion change, probabilistic models, and other social networks stuff)
Claudio Gallicchio @claudiogallicc1
771 Followers 885 Following Associate Professor of ML at the University of Pisa (Italy). Deep Randomized Neural Networks, Reservoir Computing, Stable Architectures, Deep Learning 4 Graphs
Frank T. Hopfgartner @FTHopf
933 Followers 651 Following Professor @unikoblenzde, head of @WeST_Ko. General Chair of ACM #cikm2023 and ACM #chiir2024.You might like
