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State-of-the-art image captioning methods mostly focus on improving visual features, less attention has been paid to utilizing the inherent properties of language to boost captioning performance. In this paper, we show that vocabulary…

Computer Vision and Pattern Recognition · Computer Science 2019-09-02 Lei Ke , Wenjie Pei , Ruiyu Li , Xiaoyong Shen , Yu-Wing Tai

There is a scarcity of multilingual vision-language models that properly account for the perceptual differences that are reflected in image captions across languages and cultures. In this work, through a multimodal, multilingual retrieval…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Kyle Buettner , Adriana Kovashka

Recent advancements in multimodal models highlight the value of rewritten captions for improving performance, yet key challenges remain. For example, while synthetic captions often provide superior quality and image-text alignment, it is…

Computer Vision and Pattern Recognition · Computer Science 2024-10-04 Zhengfeng Lai , Vasileios Saveris , Chen Chen , Hong-You Chen , Haotian Zhang , Bowen Zhang , Juan Lao Tebar , Wenze Hu , Zhe Gan , Peter Grasch , Meng Cao , Yinfei Yang

Image captioning has drawn considerable attention from the natural language processing and computer vision fields. Aiming to reduce the reliance on curated data, several studies have explored image captioning without any humanly-annotated…

Computer Vision and Pattern Recognition · Computer Science 2025-12-05 Rui Fonseca , Bruno Martins , Gil Rocha

Image captioning aims to generate natural language descriptions for input images in an open-form manner. To accurately generate descriptions related to the image, a critical step in image captioning is to identify objects and understand…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Jinjing Gu , Tianbao Qin , Yuanyuan Pu , Zhengpeng Zhao

Dense image captioning is critical for cross-modal alignment in vision-language pretraining and text-to-image generation, but scaling expert-quality annotations is prohibitively expensive. While synthetic captioning via strong…

Computer Vision and Pattern Recognition · Computer Science 2026-03-11 Tzu-Heng Huang , Sirajul Salekin , Javier Movellan , Frederic Sala , Manjot Bilkhu

Image-text contrastive learning models such as CLIP have demonstrated strong task transfer ability. The high generality and usability of these visual models is achieved via a web-scale data collection process to ensure broad concept…

Computer Vision and Pattern Recognition · Computer Science 2023-01-18 Haotian Liu , Kilho Son , Jianwei Yang , Ce Liu , Jianfeng Gao , Yong Jae Lee , Chunyuan Li

Image Captioning is a task that requires models to acquire a multi-modal understanding of the world and to express this understanding in natural language text. While the state-of-the-art for this task has rapidly improved in terms of n-gram…

Computer Vision and Pattern Recognition · Computer Science 2018-12-20 Annika Lindh , Robert J. Ross , Abhijit Mahalunkar , Giancarlo Salton , John D. Kelleher

We classify and re-examine some of the current approaches to improve the performance-computes trade-off of language models, including (1) non-causal models (such as masked language models), (2) extension of batch length with efficient…

Computation and Language · Computer Science 2020-09-16 Aran Komatsuzaki

Retrieval-augmented generation (RAG) systems rely on retrieval models for identifying relevant contexts and answer generation models for utilizing those contexts. However, retrievers exhibit imperfect recall and precision, limiting…

Computation and Language · Computer Science 2026-04-29 Jerry Huang , Siddarth Madala , Risham Sidhu , Cheng Niu , Hao Peng , Julia Hockenmaier , Tong Zhang

Recently, training an image captioner without annotated image-sentence pairs has gained traction. Previous methods have faced limitations due to either using mismatched corpora for inaccurate pseudo annotations or relying on…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Zhiyuan Li , Dongnan Liu , Heng Wang , Chaoyi Zhang , Weidong Cai

Image captioning has been recently gaining a lot of attention thanks to the impressive achievements shown by deep captioning architectures, which combine Convolutional Neural Networks to extract image representations, and Recurrent Neural…

Computer Vision and Pattern Recognition · Computer Science 2018-05-22 Marcella Cornia , Lorenzo Baraldi , Giuseppe Serra , Rita Cucchiara

While image captioning has gained significant attention, the potential of captioning time-series images, prevalent in areas like finance and healthcare, remains largely untapped. Existing time-series captioning methods typically offer…

Computer Vision and Pattern Recognition · Computer Science 2025-04-16 Elizabeth Fons , Rachneet Kaur , Zhen Zeng , Soham Palande , Tucker Balch , Svitlana Vyetrenko , Manuela Veloso

Scientific knowledge discovery increasingly relies on large language models, yet many existing scholarly assistants depend on proprietary systems with tens or hundreds of billions of parameters. Such reliance limits reproducibility and…

Information Retrieval · Computer Science 2026-04-23 Florian Kelber , Matthias Jobst , Yuni Susanti , Michael Färber

This paper introduces and analyzes a search and retrieval model for RAG-like systems under {token} erasures. We provide an information-theoretic analysis of remote document retrieval when query representations are only partially preserved.…

Information Retrieval · Computer Science 2026-04-21 Sara Ghasvarianjahromi , Joshua Barr , Yauhen Yakimenka , Jörg Kliewer

With the advancement of large-scale language modeling techniques, large multimodal models combining visual encoders with large language models have demonstrated exceptional performance in various visual tasks. Most of the current…

Computer Vision and Pattern Recognition · Computer Science 2024-12-20 Yi Chen , Jian Xu , Xu-Yao Zhang , Wen-Zhuo Liu , Yang-Yang Liu , Cheng-Lin Liu

Training data is at the core of any successful text-to-image models. The quality and descriptiveness of image text are crucial to a model's performance. Given the noisiness and inconsistency in web-scraped datasets, recent works shifted…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Manuel Brack , Sudeep Katakol , Felix Friedrich , Patrick Schramowski , Hareesh Ravi , Kristian Kersting , Ajinkya Kale

Image captioning, an important vision-language task, often requires a tremendous number of finely labeled image-caption pairs for learning the underlying alignment between images and texts. In this paper, we proposed a multimodal data…

Computer Vision and Pattern Recognition · Computer Science 2023-11-14 Changrong Xiao , Sean Xin Xu , Kunpeng Zhang

We examine the possibility that recent promising results in automatic caption generation are due primarily to language models. By varying image representation quality produced by a convolutional neural network, we find that a…

Computation and Language · Computer Science 2015-08-11 Jack Hessel , Nicolas Savva , Michael J. Wilber

Large language models (LLMs) trained with canonical tokenization exhibit surprising robustness to non-canonical inputs such as character-level tokenization, yet the mechanisms underlying this robustness remain unclear. We study this…

Computation and Language · Computer Science 2026-03-12 Zhipeng Yang , Shu Yang , Lijie Hu , Di Wang