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Naturally Supervised 3D Visual Grounding with Language-Regularized Concept Learners (2404.19696v1)

Published 30 Apr 2024 in cs.CV, cs.AI, cs.CL, and cs.LG

Abstract: 3D visual grounding is a challenging task that often requires direct and dense supervision, notably the semantic label for each object in the scene. In this paper, we instead study the naturally supervised setting that learns from only 3D scene and QA pairs, where prior works underperform. We propose the Language-Regularized Concept Learner (LARC), which uses constraints from language as regularization to significantly improve the accuracy of neuro-symbolic concept learners in the naturally supervised setting. Our approach is based on two core insights: the first is that language constraints (e.g., a word's relation to another) can serve as effective regularization for structured representations in neuro-symbolic models; the second is that we can query LLMs to distill such constraints from language properties. We show that LARC improves performance of prior works in naturally supervised 3D visual grounding, and demonstrates a wide range of 3D visual reasoning capabilities-from zero-shot composition, to data efficiency and transferability. Our method represents a promising step towards regularizing structured visual reasoning frameworks with language-based priors, for learning in settings without dense supervision.

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Analyzing "Naturally Supervised 3D Visual Grounding with Language-Regularized Concept Learners"

The paper "Naturally Supervised 3D Visual Grounding with Language-Regularized Concept Learners" addresses a critical issue in the field of 3D visual grounding: the dependency on dense supervision for effective model training. The authors propose a novel framework named Language-Regularized Concept Learner (LARC) to enhance the performance of 3D visual grounding models under a naturally supervised setting, i.e., using only 3D scenes and question-answer pairs without explicit object-level annotations.

Key Contributions

  1. Language-Regularized Concept Learner (LARC): The paper introduces LARC, a neuro-symbolic approach that incorporates language-based constraints as regularization to improve accuracy in a naturally supervised setting. This method leverages language constraints (e.g., word relationships) to guide the learning process, aiming to reduce the reliance on dense supervision that includes object classification labels.
  2. Utilization of LLMs: LARC takes advantage of LLMs to distill language constraints, which serve as a form of knowledge that guides the learning process. By querying LLMs, the authors extract relational and semantic properties from language, such as symmetry, exclusivity, and synonymity, to regularize the representations learned by neuro-symbolic concept learners.
  3. Empirical Evaluation and Results: The experimental results demonstrate that LARC outperforms prior state-of-the-art models for tasks such as 3D referring expression comprehension, especially when evaluated under naturally supervised conditions. Performance gains are observed in areas including zero-shot composition, data efficiency, and transferability, signifying the efficacy of incorporating language-based regularization in concept learning.

Implications and Future Directions

Practical Implications

The approach presented in this paper offers a more practical and cost-effective method for developing 3D visual grounding systems. By reducing the need for extensive labeled data, LARC can facilitate the deployment of such systems in real-world applications where obtaining detailed object annotations is challenging or impractical.

Theoretical Implications

On a theoretical level, the use of language-based constraints aligns with the broader trend of integrating symbolic reasoning with deep learning techniques. This fusion of methods is promising for enhancing interpretability and generalization, as it allows models to leverage structured knowledge. LARC's success suggests that additional exploration into the integration of symbolic knowledge and neural networks could yield further advancements in AI.

Speculation on Future Developments

Looking ahead, there are several exciting prospects for the evolution of LARC and similar frameworks. For instance, expanding the variety and complexity of language constraints could enhance model robustness, while exploring cross-modal learning could allow for even richer representations and capabilities. Furthermore, the ongoing improvement of LLMs opens up potential for even more refined extraction and application of language-based priors in diverse AI domains.

In conclusion, the paper presents a compelling case for the incorporation of language-based constraints in the training of 3D visual grounding models with sparse supervision. LARC sets a new standard for naturally supervised approaches, offering both strong empirical performance and a foundational framework for future research advancements.

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Authors (4)
  1. Chun Feng (6 papers)
  2. Joy Hsu (15 papers)
  3. Weiyu Liu (22 papers)
  4. Jiajun Wu (249 papers)
Citations (3)
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