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arXiv 1905.06139cs.CLcs.CV
Aligning Visual Regions and Textual Concepts for Semantic-Grounded Image Representations
Peking University（北京大学）；Institute of Information Engineering, Chinese Academy of Sciences（中国科学院信息工程研究所）；University of Chinese Academy of Sciences（中国科学院大学）；JD AI Research（京东人工智能研究院）
Fenglin Liu, Yuanxin Liu, Xuancheng Ren, Xiaodong He, Xu Sun
In vision-and-language grounding problems, fine-grained representations of the image are considered to be of paramount importance. Most of the current systems incorporate visual features and textual concepts as a sketch of an image. However, plainly inferred representations are usually undesirable in that they are composed of separate components, the relations of which are elusive. In this work, we aim at representing an image with a set of integrated visual regions and corresponding textual concepts, reflecting certain semantics. To this end, we build the Mutual Iterative Attention (MIA) module, which integrates correlated visual features and textual concepts, respectively, by aligning the two modalities. We evaluate the proposed approach on two representative vision-and-language grounding tasks, i.e., image captioning and visual question answering. In both tasks, the semantic-grounded image representations consistently boost the performance of the baseline models under all metrics across the board. The results demonstrate that our approach is effective and generalizes well to a wide range of models for image-related applications. (The code is available at https://github.com/fenglinliu98/MIA)
Charles University（查理大学）；Nara Institute of Science and Technology（奈良先端科学技术大学院大学）；RIKEN AIP（理化学研究所先进智能项目中心）
We present our work in progress exploring the possibilities of a shared embedding space between textual and visual modality. Leveraging the textual nature of object detection labels and the hypothetical expressiveness of extracted visual object representations, we propose an approach opposite to the current trend, grounding of the representations in the word embedding space of the captioning system instead of grounding words or sentences in their associated images. Based on the previous work, we apply additional grounding losses to the image captioning training objective aiming to force visual…
We study the problem of grounding distributional representations of texts on the visual domain, namely visual-semantic embeddings (VSE for short). Begin with an insightful adversarial attack on VSE embeddings, we show the limitation of current frameworks and image-text datasets (e.g., MS-COCO) both quantitatively and qualitatively. The large gap between the number of possible constitutions of real-world semantics and the size of parallel data, to a large extent, restricts the model to establish the link between textual semantics and visual concepts. We alleviate this problem by augmenting the …
From Visual Feedback to Textual Reviews: A Multi-Agent Vision-Language Framework for Image-Grounded Review Assistance
Indian Institute of Technology Patna（印度理工学院巴特那分校）；Indian Institute of Technology Indore（印度理工学院印多尔分校）；CSIRO（澳大利亚联邦科学与工业研究组织）；University of Western Australia（西澳大学）
TTL: Test-time Textual Learning for OOD Detection with Pretrained Vision-Language Models
Sun Yat-sen University（中山大学）；China United Network Communications Corporation Limited Guangdong Branch（中国联合网络通信集团有限公司广东分公司）；Peng Cheng Laboratory（鹏城实验室）；Hong Kong University of Science and Technology（香港科技大学）；Key Laboratory of Machine Intelligence and Advanced Computing, MOE（教育部机器智能与高级计算重点实验室）
In recent years, vision and language pre-training (VLP) models have advanced the state-of-the-art results in a variety of cross-modal downstream tasks. Aligning cross-modal semantics is claimed to be one of the essential capabilities of VLP models. However, it still remains unclear about the inner working mechanism of alignment in VLP models. In this paper, we propose a new probing method that is based on image captioning to first empirically study the cross-modal semantics alignment of VLP models. Our probing method is built upon the fact that given an image-caption pair, the VLP models will …
Stanford University（斯坦福大学）；Dresden University of Technology（德累斯顿工业大学）
We have seen great progress in basic perceptual tasks such as object recognition and detection. However, AI models still fail to match humans in high-level vision tasks due to the lack of capacities for deeper reasoning. Recently the new task of visual question answering (QA) has been proposed to evaluate a model's capacity for deep image understanding. Previous works have established a loose, global association between QA sentences and images. However, many questions and answers, in practice, relate to local regions in the images. We establish a semantic link between textual descriptions and …
University of Modena and Reggio Emilia（摩德纳和雷焦艾米利亚大学）
Current captioning approaches can describe images using black-box architectures whose behavior is hardly controllable and explainable from the exterior. As an image can be described in infinite ways depending on the goal and the context at hand, a higher degree of controllability is needed to apply captioning algorithms in complex scenarios. In this paper, we introduce a novel framework for image captioning which can generate diverse descriptions by allowing both grounding and controllability. Given a control signal in the form of a sequence or set of image regions, we generate the correspondi…
University of Rochester（罗切斯特大学）；Microsoft（微软）；University College London（伦敦大学学院）
The popularity of image sharing on social media and the engagement it creates between users reflects the important role that visual context plays in everyday conversations. We present a novel task, Image-Grounded Conversations (IGC), in which natural-sounding conversations are generated about a shared image. To benchmark progress, we introduce a new multiple-reference dataset of crowd-sourced, event-centric conversations on images. IGC falls on the continuum between chit-chat and goal-directed conversation models, where visual grounding constrains the topic of conversation to event-driven utte…
Wright State University（莱特州立大学）；NEC Laboratories America（美国NEC实验室）
We introduce a new inference task - Visual Entailment (VE) - which differs from traditional Textual Entailment (TE) tasks whereby a premise is defined by an image, rather than a natural language sentence as in TE tasks. A novel dataset SNLI-VE (publicly available at https://github.com/necla-ml/SNLI-VE) is proposed for VE tasks based on the Stanford Natural Language Inference corpus and Flickr30k. We introduce a differentiable architecture called the Explainable Visual Entailment model (EVE) to tackle the VE problem. EVE and several other state-of-the-art visual question answering (VQA) based m…
Uncovering Hidden Connections: Iterative Search and Reasoning for Video-grounded Dialog
School of Computer Science and Technology, Harbin Institute of Technology (Shenzhen)（哈尔滨工业大学（深圳）计算机科学与技术学院）；Pengcheng Laboratory（鹏城实验室）；School of Computer Science and Technology, Shandong Jianzhu University（山东建筑大学计算机科学与技术学院）
Effectiveness and interpretability are two essential properties for trustworthy AI systems. Most recent studies in visual reasoning are dedicated to improving the accuracy of predicted answers, and less attention is paid to explaining the rationales behind the decisions. As a result, they commonly take advantage of spurious biases instead of actually reasoning on the visual-textual data, and have yet developed the capability to explain their decision making by considering key information from both modalities. This paper aims to close the gap from three distinct perspectives: first, we define a…
Mohamed bin Zayed University of AI（穆罕默德·本·扎耶德人工智能大学）；Australian National University（澳大利亚国立大学）；Aalto University（阿尔托大学）；Carnegie Mellon University（卡内基梅隆大学）；University of California - Merced（加州大学默塞德分校）；Linköping University（林雪平大学）；Google Research（谷歌研究院）
Aligning MLLM Benchmark With Human Preferences via Structural Equation Modeling
Interdisciplinary Artificial Intelligence Research Institute, Wuhan College（交叉学科人工智能研究 institute，武汉学院）；School of Computer and Artificial Intelligence, Wuhan University of Technology（计算机与人工智能学院，武汉理工大学）；Shanghai Artificial Intelligence Laboratory（上海人工智能实验室）；Sanya Science and Education Innovation Park, Wuhan University of Technology（三亚科学教育创新园，武汉理工大学）；Institute of Automation, Chinese Academy of Sciences（自动化研究所，中国科学院）；School of Mathematics and Statistics, Northwestern Polytechnical University（数学与统计学院，西北工业大学）；Institute of Artificial Intelligence (TeleAI) of China Telecom（中国电信人工智能研究所（TeleAI））
GRACE: Boosting Video MLLMs with Grounded Action-Centric Evidence for Viewer Sentiment Prediction
Shanghai Jiao Tong University（上海交通大学）；Hangzhou Dianzi University（杭州电子科技大学）；The 52nd Research Institute of China Electronics Technology Group Corporation（中国电子科技集团公司第五十二研究所）；Hangzhou Bywin Technology Co., Ltd.（杭州百威科技有限公司）；Zhejiang Dahua Technology Co., Ltd.（浙江大华技术股份有限公司）；School of Information Science and Engineering, Shandong University（山东大学信息科学与工程学院）；Haihe Laboratory of Information Technology Application Innovation（海河信息技术应用创新实验室）
We propose a new 3D spatial understanding task of 3D Question Answering (3D-QA). In the 3D-QA task, models receive visual information from the entire 3D scene of the rich RGB-D indoor scan and answer the given textual questions about the 3D scene. Unlike the 2D-question answering of VQA, the conventional 2D-QA models suffer from problems with spatial understanding of object alignment and directions and fail the object identification from the textual questions in 3D-QA. We propose a baseline model for 3D-QA, named ScanQA model, where the model learns a fused descriptor from 3D object proposals …
Singapore Management University（新加坡管理大学）；A*STAR, Institute for Infocomm Research（新加坡科技研究局资讯通信研究院）；Salesforce Research Asia（赛富时亚洲研究院）
Compared to traditional visual question answering, video-grounded dialogues require additional reasoning over dialogue context to answer questions in a multi-turn setting. Previous approaches to video-grounded dialogues mostly use dialogue context as a simple text input without modelling the inherent information flows at the turn level. In this paper, we propose a novel framework of Reasoning Paths in Dialogue Context (PDC). PDC model discovers information flows among dialogue turns through a semantic graph constructed based on lexical components in each question and answer. PDC model then lea…
LaViT: Aligning Latent Visual Thoughts for Multi-modal Reasoning
City University of Hong Kong（香港城市大学）；University of Science and Technology of China（中国科学技术大学）；Utrecht University（乌特勒支大学）；University of Electronic Science and Technology of China（电子科技大学）
University of Malta（马耳他大学）；University of Trento（特伦托大学）
Capturing semantic relations between sentences, such as entailment, is a long-standing challenge for computational semantics. Logic-based models analyse entailment in terms of possible worlds (interpretations, or situations) where a premise P entails a hypothesis H iff in all worlds where P is true, H is also true. Statistical models view this relationship probabilistically, addressing it in terms of whether a human would likely infer H from P. In this paper, we wish to bridge these two perspectives, by arguing for a visually-grounded version of the Textual Entailment task. Specifically, we as…
Institute of Mathematics of the Romanian Academy（罗马尼亚科学院数学研究所）；Lund University（隆德大学）
Automatic video captioning is challenging due to the complex interactions in dynamic real scenes. A comprehensive system would ultimately localize and track the objects, actions and interactions present in a video and generate a description that relies on temporal localization in order to ground the visual concepts. However, most existing automatic video captioning systems map from raw video data to high level textual description, bypassing localization and recognition, thus discarding potentially valuable information for content localization and generalization. In this work we present an auto…
International Institute of Information Technology Hyderabad（海得拉巴国际信息技术学院）
Multimodal Machine Translation (MMT) enriches the source text with visual information for translation. It has gained popularity in recent years, and several pipelines have been proposed in the same direction. Yet, the task lacks quality datasets to illustrate the contribution of visual modality in the translation systems. In this paper, we propose our system under the team name Volta for the Multimodal Translation Task of WAT 2021 from English to Hindi. We also participate in the textual-only subtask of the same language pair for which we use mBART, a pretrained multilingual sequence-to-sequen…
VTPerception-R1: Enhancing Multimodal Reasoning via Explicit Visual and Textual Perceptual Grounding
Fudan University（复旦大学）；Shanghai AI Laboratory（上海人工智能实验室）；The University of Hong Kong（香港大学）；Shenzhen University（深圳大学）；University of Science and Technology of China（中国科学技术大学）
Vision-Language Pre-training (VLP) has achieved impressive performance on various cross-modal downstream tasks. However, most existing methods can only learn from aligned image-caption data and rely heavily on expensive regional features, which greatly limits their scalability and performance. In this paper, we propose an end-to-end unified-modal pre-training framework, namely UNIMO-2, for joint learning on both aligned image-caption data and unaligned image-only and text-only corpus. We build a unified Transformer model to jointly learn visual representations, textual representations and sema…
Disambiguating Reference in Visually Grounded Dialogues through Joint Modeling of Textual and Multimodal Semantic Structures
Nara Institute of Science and Technology（奈良科学技術研究所）；Guardian Robot Project（守護機器人計劃）；RIKEN（理化学研究所）；Kyoto University（京都大學）；Institute of Science Tokyo（東京科學研究院）
With the aim of promoting and understanding the multilingual version of image search, we leverage visual object detection and propose a model with diverse multi-head attention to learn grounded multilingual multimodal representations. Specifically, our model attends to different types of textual semantics in two languages and visual objects for fine-grained alignments between sentences and images. We introduce a new objective function which explicitly encourages attention diversity to learn an improved visual-semantic embedding space. We evaluate our model in the German-Image and English-Image…
We consider grounding open domain dialogues with images. Existing work assumes that both an image and a textual context are available, but image-grounded dialogues by nature are more difficult to obtain than textual dialogues. Thus, we propose learning a response generation model with both image-grounded dialogues and textual dialogues by assuming that the visual scene information at the time of a conversation can be represented by an image, and trying to recover the latent images of the textual dialogues through text-to-image generation techniques. The likelihood of the two types of dialogues…
California Institute of Technology（加州理工学院）；University of California, Santa Barbara（加州大学圣巴巴拉分校）；University of Waterloo（滑铁卢大学）；Vector Institute（向量研究所）
A pressing challenge in current dialogue systems is to successfully converse with users on topics with information distributed across different modalities. Previous work in multiturn dialogue systems has primarily focused on either text or table information. In more realistic scenarios, having a joint understanding of both is critical as knowledge is typically distributed over both unstructured and structured forms. We present a new dialogue dataset, HybriDialogue, which consists of crowdsourced natural conversations grounded on both Wikipedia text and tables. The conversations are created thr…
