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Dense Retrieval (DR) models have proven to be effective for Document Retrieval and Information Grounding tasks. Usually, these models are trained and optimized for improving the relevance of top-ranked documents for a given query. Previous…

Information Retrieval · Computer Science 2025-08-12 Stefano Campese , Alessandro Moschitti , Ivano Lauriola

This paper proposes Dynamic Memory Induction Networks (DMIN) for few-shot text classification. The model utilizes dynamic routing to provide more flexibility to memory-based few-shot learning in order to better adapt the support sets, which…

Computation and Language · Computer Science 2020-05-13 Ruiying Geng , Binhua Li , Yongbin Li , Jian Sun , Xiaodan Zhu

Dense embedding models have become critical for modern information retrieval, particularly in RAG pipelines, but their performance often degrades when applied to specialized corpora outside their pre-training distribution. To address thi we…

Information Retrieval · Computer Science 2025-10-29 Nathan Paull

Infrared dim and small target detection presents a significant challenge due to dynamic multi-frame scenarios and weak target signatures in the infrared modality. Traditional low-rank plus sparse models often fail to capture dynamic…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Pei Liu , Yisi Luo , Wenzhen Wang , Xiangyong Cao

Few-shot dense retrieval (DR) aims to effectively generalize to novel search scenarios by learning a few samples. Despite its importance, there is little study on specialized datasets and standardized evaluation protocols. As a result,…

Computation and Language · Computer Science 2023-04-13 Si Sun , Yida Lu , Shi Yu , Xiangyang Li , Zhonghua Li , Zhao Cao , Zhiyuan Liu , Deiming Ye , Jie Bao

This paper proposes a novel Zero-Shot Action Recognition~(ZSAR) method based on contrastive learning. In ZSAR, we aim to classify examples from classes that were missing during training. Two well-known problems remain in ZSAR: the semantic…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Valter Estevam , Rayson Laroca , Helio Pedrini , David Menotti

Cognitive diagnosis aims to infer students' mastery levels based on their historical response logs. However, existing cognitive diagnosis models (CDMs), which rely on ID embeddings, often have to train specific models on specific domains.…

Computation and Language · Computer Science 2025-01-27 Shuo Liu , Zihan Zhou , Yuanhao Liu , Jing Zhang , Hong Qian

Deep learning has emerged as the most promising approach in various fields; however, when the distributions of training and test data are different (domain shift), the performance of deep learning models can degrade. Semi-supervised domain…

Machine Learning · Computer Science 2025-08-13 Seonyoung Kim , Dongil Kim

We present a novel framework that can combine multi-domain learning (MDL), data imputation (DI) and multi-task learning (MTL) to improve performance for classification and regression tasks in different domains. The core of our method is an…

Machine Learning · Computer Science 2020-03-18 Andre Mendes , Julian Togelius , Leandro dos Santos Coelho

Dense retrieval compresses texts into single embeddings ranked by cosine similarity. While efficient for recall, this interface is brittle for identity-level matching: minimal compositional edits (negation, role swaps) flip meaning yet…

Information Retrieval · Computer Science 2026-04-21 Radoslav Ralev , Aditeya Baral , Iliya Zhechev , Jen Agarwal , Srijith Rajamohan

Neural 'dense' retrieval models are state of the art for many datasets, however these models often exhibit limited domain transfer ability. Existing approaches to adaptation are unwieldy, such as requiring explicit supervision, complex…

Computation and Language · Computer Science 2023-11-28 Fan Jiang , Qiongkai Xu , Tom Drummond , Trevor Cohn

State-of-the-art neural retrievers predominantly focus on high-resource languages like English, which impedes their adoption in retrieval scenarios involving other languages. Current approaches circumvent the lack of high-quality labeled…

Computation and Language · Computer Science 2024-02-26 Antoine Louis , Vageesh Saxena , Gijs van Dijck , Gerasimos Spanakis

Many discriminative natural language understanding (NLU) tasks have large label spaces. Learning such a process of large-space decision making is particularly challenging due to the lack of training instances per label and the difficulty of…

Computation and Language · Computer Science 2023-10-31 Nan Xu , Fei Wang , Mingtao Dong , Muhao Chen

Image captioning models often suffer from performance degradation when applied to novel datasets, as they are typically trained on domain-specific data. To enhance generalization in out-of-domain scenarios, retrieval-augmented approaches…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Hao Wu , Zhihang Zhong , Xiao Sun

For many computer vision applications such as image captioning, visual question answering, and person search, learning discriminative feature representations at both image and text level is an essential yet challenging problem. Its…

Computer Vision and Pattern Recognition · Computer Science 2019-08-29 Nikolaos Sarafianos , Xiang Xu , Ioannis A. Kakadiaris

Dense retrieval (DR) approaches based on powerful pre-trained language models (PLMs) achieved significant advances and have become a key component for modern open-domain question-answering systems. However, they require large amounts of…

Computation and Language · Computer Science 2022-08-08 Xiaoyu Shen , Svitlana Vakulenko , Marco del Tredici , Gianni Barlacchi , Bill Byrne , Adrià de Gispert

Dense retrieval systems are commonly used for information retrieval (IR). They rely on learning text representations through an encoder and usually require supervised modeling via labelled data which can be costly to obtain or simply…

Artificial Intelligence · Computer Science 2024-09-26 Qiuhai Zeng , Zimeng Qiu , Dae Yon Hwang , Xin He , William M. Campbell

Language models (LMs) are indispensable tools for natural language processing tasks, but their vulnerability to adversarial attacks remains a concern. While current research has explored adversarial training techniques, their improvements…

Computation and Language · Computer Science 2024-03-28 Brian Formento , Wenjie Feng , Chuan Sheng Foo , Luu Anh Tuan , See-Kiong Ng

Deep learning techniques have recently shown to be successful in many natural language processing tasks forming state-of-the-art systems. They require, however, a large amount of annotated data which is often missing. This paper explores…

Computation and Language · Computer Science 2020-04-23 Daniel Grießhaber , Ngoc Thang Vu , Johannes Maucher

Image-Text Retrieval (ITR) is challenging in bridging visual and lingual modalities. Contrastive learning has been adopted by most prior arts. Except for limited amount of negative image-text pairs, the capability of constrastive learning…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Haoran Wang , Dongliang He , Wenhao Wu , Boyang Xia , Min Yang , Fu Li , Yunlong Yu , Zhong Ji , Errui Ding , Jingdong Wang