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This paper proposes an iterative inference algorithm for multi-hop explanation regeneration, that retrieves relevant factual evidence in the form of text snippets, given a natural language question and its answer. Combining multiple sources…

Information Retrieval · Computer Science 2020-12-22 Ruben Cartuyvels , Graham Spinks , Marie-Francine Moens

Recently, Transformer-based encoder-decoder models have demonstrated strong performance in multilingual speech recognition. However, the decoder's autoregressive nature and large size introduce significant bottlenecks during inference.…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-28 Yunkyu Lim , Jihwan Park , Hyung Yong Kim , Hanbin Lee , Byeong-Yeol Kim

This paper presents Diff-Explainer, the first hybrid framework for explainable multi-hop inference that integrates explicit constraints with neural architectures through differentiable convex optimization. Specifically, Diff-Explainer…

Computation and Language · Computer Science 2022-06-23 Mokanarangan Thayaparan , Marco Valentino , Deborah Ferreira , Julia Rozanova , André Freitas

Recently, autoregressive (AR) models have shown strong potential in image generation, offering better scalability and easier integration with unified multi-modal systems compared to diffusion-based methods. However, extending AR models to…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Dongyang Jin , Ryan Xu , Jianhao Zeng , Rui Lan , Yancheng Bai , Lei Sun , Xiangxiang Chu

We propose SDAR, a Synergistic Diffusion-Autoregression paradigm that unifies the training efficiency of autoregressive models with the parallel inference capability of diffusion. Instead of costly end-to-end diffusion training, SDAR…

Machine Learning · Computer Science 2025-10-21 Shuang Cheng , Yihan Bian , Dawei Liu , Linfeng Zhang , Qian Yao , Zhongbo Tian , Wenhai Wang , Qipeng Guo , Kai Chen , Biqing Qi , Bowen Zhou

Expansion-enhanced sparse lexical representation improves information retrieval (IR) by minimizing vocabulary mismatch problems during lexical matching. In this paper, we explore the potential of jointly learning dense semantic…

Machine Learning · Computer Science 2024-05-24 Biplob Biswas , Rajiv Ramnath

Retrieval-Augmented Generation (RAG) grounds large language model outputs in external evidence, but remains challenged on multi-hop question answering that requires long reasoning. Recent works scale RAG at inference time along two…

Transformer-based models have advanced the field of question answering, but multi-hop reasoning, where answers require combining evidence across multiple passages, remains difficult. This paper presents a comprehensive evaluation of…

Computer Vision and Pattern Recognition · Computer Science 2025-09-29 Zichen Zhang , Kunlong Zhang , Hongwei Ruan , Yiming Luo

A recent line of work has shown promise in using sparse autoencoders (SAEs) to uncover interpretable features in neural network representations. However, the simple linear-nonlinear encoding mechanism in SAEs limits their ability to perform…

Machine Learning · Computer Science 2025-01-31 Charles O'Neill , Alim Gumran , David Klindt

Modern enterprises manage vast knowledge distributed across heterogeneous systems such as Jira, Git repositories, Confluence, and wikis. Conventional retrieval methods based on keyword search or static embeddings often fail to answer…

Artificial Intelligence · Computer Science 2025-10-14 Nilima Rao , Jagriti Srivastava , Pradeep Kumar Sharma , Hritvik Shrivastava

Despite their recent popularity and well-known advantages, dense retrievers still lag behind sparse methods such as BM25 in their ability to reliably match salient phrases and rare entities in the query and to generalize to out-of-domain…

Computation and Language · Computer Science 2022-11-15 Xilun Chen , Kushal Lakhotia , Barlas Oğuz , Anchit Gupta , Patrick Lewis , Stan Peshterliev , Yashar Mehdad , Sonal Gupta , Wen-tau Yih

While Transformer architectures have demonstrated impressive scalability across domains, they continue to face challenges in long-context reasoning, computational efficiency, and structural generalization - largely due to rigid layer…

Computation and Language · Computer Science 2025-10-03 Haochen You , Baojing Liu

Understanding how different AI models encode the same high-level concepts, such as objects or attributes, remains challenging because each model typically produces its own isolated representation. Existing interpretability methods like…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Ali Nasiri-Sarvi , Hassan Rivaz , Mahdi S. Hosseini

Retrieval-augmented generation (RAG) has proven to be effective in mitigating hallucinations in large language models, yet its effectiveness remains limited in complex, multi-step reasoning scenarios. Recent efforts have incorporated…

Computation and Language · Computer Science 2025-12-29 Wenda Wei , Yu-An Liu , Ruqing Zhang , Jiafeng Guo , Lixin Su , Shuaiqiang Wang , Dawei Yin , Maarten de Rijke , Xueqi Cheng

Code retrieval aims to provide users with desired code snippets based on users' natural language queries. With the development of deep learning technologies, adopting pre-trained models for this task has become mainstream. Considering the…

Software Engineering · Computer Science 2025-08-04 Wenchao Gu , Zongyi Lyu , Yanlin Wang , Hongyu Zhang , Cuiyun Gao , Michael R. Lyu

Unsupervised deformable image registration requires aligning complex anatomical structures without reference labels, making interpretability and reliability critical. Existing deep learning methods achieve considerable accuracy but often…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Zafar Iqbal , Anwar Ul Haq , Srimannarayana Grandhi

We propose a novel Chain Guided Retriever-reader ({\tt CGR}) framework to model the reasoning chain for multi-hop Science Question Answering. Our framework is capable of performing explainable reasoning without the need of any…

Computation and Language · Computer Science 2021-09-08 Weiwen Xu , Yang Deng , Huihui Zhang , Deng Cai , Wai Lam

This paper presents a novel framework for reconstructing multi-hop explanations in science Question Answering (QA). While existing approaches for multi-hop reasoning build explanations considering each question in isolation, we propose a…

Artificial Intelligence · Computer Science 2021-02-11 Marco Valentino , Mokanarangan Thayaparan , André Freitas

Current state-of-the-art approaches to cross-modal retrieval process text and visual input jointly, relying on Transformer-based architectures with cross-attention mechanisms that attend over all words and objects in an image. While…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 Gregor Geigle , Jonas Pfeiffer , Nils Reimers , Ivan Vulić , Iryna Gurevych

Retrieval-augmented large language models, when optimized with outcome-level rewards, can achieve strong answer accuracy on multi-hop questions. However, under noisy retrieval, models frequently suffer from "right-answer-wrong-reason…

Computation and Language · Computer Science 2026-03-17 Yu Liu , Wenxiao Zhang , Diandian Guo , Cong Cao , Fangfang Yuan , Qiang Sun , Yanbing Liu , Jin B. Hong , Zhiyuan Ma
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