Neural-Symbolic VQA: Disentangling Reasoning from Vision and Language Understanding
Authors: Kexin Yi, Jiajun Wu, Chuang Gan, Antonio Torralba, Pushmeet Kohli, Joshua B. Tenenbaum
AI-generated Key Points
- The paper proposes a novel approach to visual question answering (VQA) by combining deep representation learning for visual recognition and language understanding with symbolic program execution for reasoning.
- The proposed neural-symbolic VQA system recovers a structural scene representation from the image and a program trace from the question, then executes the program on the scene representation to obtain an answer.
- Incorporating symbolic structure as prior knowledge is more robust to long program traces, allowing the model to solve complex reasoning tasks better.
- On the CLEVR dataset, the proposed model achieved an accuracy of 99.8%.
- This approach is more data- and memory-efficient compared to existing methods for offline question answering since it performs well after learning on a small number of training data and can encode an image into a compact representation requiring less storage.
- It offers full transparency to the reasoning process, enabling researchers to interpret and diagnose each execution step.
- This level of transparency allows for better understanding of how different components contribute to overall performance.
- Overall, this paper presents a promising new approach to VQA that disentangles reasoning from vision and language understanding through neural-symbolic integration.
Abstract: We marry two powerful ideas: deep representation learning for visual recognition and language understanding, and symbolic program execution for reasoning. Our neural-symbolic visual question answering (NS-VQA) system first recovers a structural scene representation from the image and a program trace from the question. It then executes the program on the scene representation to obtain an answer. Incorporating symbolic structure as prior knowledge offers three unique advantages. First, executing programs on a symbolic space is more robust to long program traces; our model can solve complex reasoning tasks better, achieving an accuracy of 99.8% on the CLEVR dataset. Second, the model is more data- and memory-efficient: it performs well after learning on a small number of training data; it can also encode an image into a compact representation, requiring less storage than existing methods for offline question answering. Third, symbolic program execution offers full transparency to the reasoning process; we are thus able to interpret and diagnose each execution step.
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