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🔍 mario marchand 📂 Computer Science
Showing 476 results for "mario marchand" in Computer Science
Computer Science Preprint PDF DOI

NuggetIndex: Governed Atomic Retrieval for Maintainable RAG

Saber Zerhoudi, Michael Granitzer, Jelena Mitrovic · 2026

Retrieval-augmented generation (RAG) systems are frequently evaluated via fact-based metrics, yet standard implementations retrieve passages or static propositions. This unit mismatch between evaluati…

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Computer Science Preprint PDF DOI

Credit Limits beyond Full Collateralization in Decentralized Micropayments: Incentive Conditions

Chien-Chih Chen, Wojciech Golab · 2026

In decentralized non-custodial micropayments, the central challenge is not whether payments can be executed directly, but under what conditions such systems can offer credit limits without requiring f…

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Computer Science Preprint PDF DOI

Distance Field Rasterization for End-to-End Mesh Reconstruction

Jinkai Cui, Kaiwen Song, Chumeng Niu, Juyong Zhang · 2026

Rasterization based methods have recently enabled high-quality novel view synthesis at real-time rates, but their underlying volumetric primitives do not expose a direct, globally consistent surface r…

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Computer Science Preprint PDF DOI

Lost in Decoding? Reproducing and Stress-Testing the Look-Ahead Prior in Generative Retrieval

Kidist Amde Mekonnen, Yongkang Li, Yubao Tang, Simon Lupart, Maarten de Rijke · 2026

Generative retrieval (GR) ranks documents by autoregressively generating document identifiers. Because many GR methods rely on trie-constrained beam search, they are vulnerable to early pruning of rel…

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Computer Science Preprint PDF DOI

A Parametric Memory Head for Continual Generative Retrieval

Kidist Amde Mekonnen, Yubao Tang, Maarten de Rijke · 2026

Generative information retrieval (GenIR) consolidates retrieval into a single neural model that decodes document identifiers (docids) directly from queries. While this model-as-index paradigm offers a…

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Computer Science Preprint PDF DOI

Efficient Rationale-based Retrieval: On-policy Distillation from Generative Rerankers based on JEPA

Teng Chen, Sheng Xu, Feixiang Guo, Xiaoyu Wang, Qingqing Gu, Hongyan Li, Luo Ji · 2026

Unlike traditional fact-based retrieval, rationale-based retrieval typically necessitates cross-encoding of query-document pairs using large language models, incurring substantial computational costs.…

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Computer Science Preprint PDF DOI

Reproduction Beyond Benchmarks: ConstBERT and ColBERT-v2 Across Backends and Query Distributions

Utshab Kumar Ghosh, Ashish David, Shubham Chatterjee · 2026

Reproducibility must validate architectural robustness, not just numerical accuracy. We evaluate ColBERT-v2 and ConstBERT across five dimensions, finding that while ConstBERT reproduces within 0.05% M…

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Computer Science Preprint PDF DOI

Refunded but Rewarded: The Double Dip Attack on Cashback Reward Engines

S M Zia Ur Rashid, Suman Rath · 2026

Cashback reward programs now serve as central instruments in the competitive landscape of cards, digital wallets, and payment platforms. Despite their financial significance, the business logic govern…

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Computer Science Preprint PDF DOI

Real-time Neural Six-way Lightmaps

Wei Li, Hanxiao Sun, Tao Huang, Haoxiang Wang, Tongtong Wang, Zherong Pan, Kui Wu · 2026

Participating media are a pervasive and intriguing visual effect in virtual environments. Unfortunately, rendering such phenomena in real-time is notoriously difficult due to the computational expense…

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Computer Science Preprint PDF DOI

FGR-ColBERT: Identifying Fine-Grained Relevance Tokens During Retrieval

Antonin Jarolim, Martin Fajcik · 2026

Document retrieval identifies relevant documents but does not provide fine-grained evidence cues, such as specific relevant spans. A possible solution is to apply an LLM after retrieval; however, this…

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Computer Science Preprint PDF DOI

ColBERT-Att: Late-Interaction Meets Attention for Enhanced Retrieval

Raj Nath Patel, Sourav Dutta · 2026

Vector embeddings from pre-trained language models form a core component in Neural Information Retrieval systems across a multitude of knowledge extraction tasks. The paradigm of late interaction, int…

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Computer Science Preprint PDF DOI

PIDP-Attack: Combining Prompt Injection with Database Poisoning Attacks on Retrieval-Augmented Generation Systems

Haozhen Wang, Haoyue Liu, Jionghao Zhu, Zhichao Wang, Yongxin Guo, Xiaoying Tang · 2026

Large Language Models (LLMs) have demonstrated remarkable performance across a wide range of applications. However, their practical deployment is often hindered by issues such as outdated knowledge an…

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Computer Science Preprint PDF DOI

From Questions to Trust Reports: A LLM-IR Framework for the TREC 2025 DRAGUN Track

Ignacy Alwasiak, Kene Nnolim, Jaclyn Thi, Samy Ateia, Markus Bink, Gregor Donabauer, David Elsweiler, Udo Kruschwitz · 2026

The DRAGUN Track at TREC 2025 targets the growing need for effective support tools that help users evaluate the trustworthiness of online news. We describe the UR_Trecking system submitted for both Ta…

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Computer Science Preprint PDF DOI

Overview of the TREC 2025 Retrieval Augmented Generation (RAG) Track

Shivani Upadhyay, Nandan Thakur, Ronak Pradeep, Nick Craswell, Daniel Campos, Jimmy Lin · 2026

The second edition of the TREC Retrieval Augmented Generation (RAG) Track advances research on systems that integrate retrieval and generation to address complex, real-world information needs. Buildin…

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Computer Science Preprint PDF DOI

Reproducing and Comparing Distillation Techniques for Cross-Encoders

Victor Morand, Mathias Vast, Basile Van Cooten, Laure Soulier, Josiane Mothe, Benjamin Piwowarski · 2026

Recent advances in Information Retrieval have established transformer-based cross-encoders as a keystone in IR. Recent studies have focused on knowledge distillation and showed that, with the right st…

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Computer Science Preprint PDF DOI

Model Editing for New Document Integration in Generative Information Retrieval

Zhen Zhang, Zihan Wang, Xinyu Ma, Shuaiqiang Wang, Dawei Yin, Xin Xin, Pengjie Ren, Maarten de Rijke, Zhaochun Ren · 2026

Generative retrieval (GR) reformulates the Information Retrieval (IR) task as the generation of document identifiers (docIDs). Despite its promise, existing GR models exhibit poor generalization to ne…

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Computer Science Preprint PDF DOI

Macrofacet Theory for Gaussian Process Statistical Surfaces

Minghao Huang, Yuang Cui, Beibei Wang, Lingqi Yan · 2026

We present macrofacet theory, taking microfacet theory from micro-space to macro-space by stretching a surface to a volume to make it have microfacet characteristic in marco-space. In this way, we hav…

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Computer Science Preprint PDF DOI

Resources for Automated Evaluation of Assistive RAG Systems that Help Readers with News Trustworthiness Assessment

Dake Zhang, Mark D. Smucker, Charles L. A. Clarke · 2026

Many readers today struggle to assess the trustworthiness of online news because reliable reporting coexists with misinformation. The TREC 2025 DRAGUN (Detection, Retrieval, and Augmented Generation f…

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Computer Science Preprint PDF DOI

The Compulsory Imaginary: AGI and Corporate Authority

Emilio Barkett · 2026

This paper argues that the two leading AGI firms -- OpenAI and Anthropic -- construct sociotechnical imaginaries through a structurally consistent rhetorical strategy, despite meaningful differences i…

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Computer Science Preprint PDF DOI

MaRI: Accelerating Ranking Model Inference via Structural Re-parameterization in Large Scale Recommendation System

Yusheng Huang, Pengbo Xu, Shen Wang, Changxin Lao, Jiangxia Cao, Shuang Wen, Shuang Yang, Zhaojie Liu, Han Li, Kun Gai · 2026

Ranking models, i.e., coarse-ranking and fine-ranking models, serve as core components in large-scale recommendation systems, responsible for scoring massive item candidates based on user preferences.…

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