| Challenge: | Embodied robotic agents can be used to ground objects using 3D geometry . despite typically being paired with 2D images, natural language describes a fundamentally 3D world . |
| Approach: | They propose a model that leverages 3D geometric information to ground natural language . they show that VLG significantly improves grounding accuracy on SNARE . |
| Outcome: | The proposed model significantly improves grounding accuracy on SNARE, an object reference game task. |
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Language-to-Space Programming for Training-Free 3D Visual Grounding (2025.emnlp-main)
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| Challenge: | Existing methods for 3D visual grounding have been proposed, but they are limited by the scarcity of 3D vision-language datasets and the high cost of annotations. |
| Approach: | They propose a method for training-free 3D visual grounding that uses LLM-generated codes to analyze 3D spatial relations among objects. |
| Outcome: | The proposed method achieves 52.9% accuracy on the Nr3D benchmark and significantly reduces grounding time and token costs. |
ViGiL3D: A Linguistically Diverse Dataset for 3D Visual Grounding (2025.acl-long)
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| Challenge: | 3D visual grounding models localize entities in a scene referred to by natural language text . recent studies focused on LLM-based scaling of 3DVG datasets, but these do not capture the full range of potential prompts which could be specified in the English language. |
| Approach: | They propose a framework for linguistically analyzing 3DVG prompts and introduce a diagnostic dataset for evaluating 3D visual grounding methods against a diverse set of language patterns. |
| Outcome: | The proposed framework scales up and tests against a representative set of prompts in the english language. |
Read Before Grounding: Scene Knowledge Visual Grounding via Multi-step Parsing (2025.coling-main)
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| Challenge: | Existing VG datasets use simple textual descriptions with limited attribute and spatial information between images and text. |
| Approach: | They propose a method that transforms visual knowledge into concise, information-dense visual descriptions. |
| Outcome: | The proposed method significantly improves performance of multimodal grounding models. |
Beyond Literal Descriptions: Understanding and Locating Open-World Objects Aligned with Human Intentions (2024.findings-acl)
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| Challenge: | Existing methods for visual grounding rely on the assumption that the given expression must be literal . this impedes the practical deployment of agents in real-world scenarios. |
| Approach: | They propose a visual grounding task that uses intention expressions to locate foreground entities . they build a large-scale IVG dataset with free-form intention expression to promote VG . |
| Outcome: | The proposed method is based on a large-scale intention-driven visual-language (V-L) dataset with free-form intention expressions. |
What Does BERT with Vision Look At? (2020.acl-main)
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| Challenge: | Pre-trained visual grounded language models have improved performance on vision-and-language tasks but what they learn during pre-training remains unclear. |
| Approach: | They show that attention heads of visual grounded language models actively ground elements of language to image regions. |
| Outcome: | The attention heads of a visual grounded language model can ground elements to image regions, demonstrating their ability to detect syntactic relations between non-entity words and image regions. |
Language in a (Search) Box: Grounding Language Learning in Real-World Human-Machine Interaction (2021.naacl-main)
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| Challenge: | Scholarly work in this area uses toy worlds and synthetic linguistic data, but grounded language learning offers several practical and scientific advantages. |
| Approach: | They propose to model teacher-learner dynamics through natural interactions occurring between users and search engines. |
| Outcome: | The proposed model is better than non-grounded models on compositionality and zero-shot inference tasks. |
How Well Do Large Language Models Truly Ground? (2024.naacl-long)
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| Challenge: | Existing research defines “grounding” as having the correct answer, which does not ensure the reliability of the entire response. |
| Approach: | They propose a stricter definition of grounding: fully utilizes the necessary knowledge from the provided context and stays within the limits of that knowledge. |
| Outcome: | The proposed model can be ground on external contexts and maintain its correct answer. |
Datasets and Recipes for Video Temporal Grounding via Reinforcement Learning (2025.emnlp-industry)
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Ruizhe Chen, Tianze Luo, Zhiting Fan, Heqing Zou, Zhaopeng Feng, Guiyang Xie, Hansheng Zhang, Zhuochen Wang, Zuozhu Liu, Zhang Huaijian
| Challenge: | Existing methods for video temporal grounding suffer from limited temporal awareness and poor generalization. |
| Approach: | They propose a two-stage training framework that integrates supervised fine-tuning with reinforcement learning to improve both the accuracy and robustness of VTG models. |
| Outcome: | The proposed training framework outperforms existing models on multiple benchmarks on open-domain and challenging scenarios. |
Does Visual Grounding Enhance the Understanding of Embodied Knowledge in Large Language Models? (2025.findings-emnlp)
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| Challenge: | Despite significant progress in multimodal language models, it remains unclear whether visual grounding enhances their understanding of embodied knowledge compared to text-only models. |
| Approach: | They propose to assess vision-language models’ perceptual abilities across different sensory modalities through vector comparison and question-answering tasks with over 1,700 questions. |
| Outcome: | The proposed benchmark assesses the models’ perceptual abilities across different sensory modalities through vector comparison and question-answering tasks with over 1,700 questions. |
Lexicon-Level Contrastive Visual-Grounding Improves Language Modeling (2024.findings-acl)
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| Challenge: | Neural language models (LMs) are trained on orders of magnitude more language data than human language learners receive, but without supervision from other sensory modalities that play a crucial role in human learning. |
| Approach: | They propose a grounded language learning procedure that leverages visual supervision to improve textual representations. |
| Outcome: | The proposed procedure outperforms standard language-only models in terms of learning efficiency in small and developmentally plausible data regimes and improves perplexity by around 5% on multiple language modeling tasks compared to other models trained on the same amount of text data. |