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arXiv 2406.18534cs.CLcs.LG
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迈向概念学习中的组合性

Towards Compositionality in Concept Learning

University of Pennsylvania(宾夕法尼亚大学);Peking University(北京大学)

Adam Stein, Aaditya Naik, Yinjun Wu, Mayur Naik, Eric Wong

AI总结:

针对现有无监督概念提取方法缺乏组合性的问题,提出组合概念提取(CCE)方法,通过满足组合性属性,在多模态数据集上发现了更具组合性的概念表示,并提升了下游分类任务的准确率。

摘要:

基于概念的可解释性方法通过将基础模型的嵌入分解为高层概念,为模型内部机制提供了视角。当这些概念表示具备组合性时最为有用,即各个概念能够组合起来解释整个样本。我们表明,现有的无监督概念提取方法所找到的概念并不具备组合性。为了自动发现具有组合性的概念表示,我们识别出此类表示的两个显著属性,并提出组合概念提取(CCE)来寻找满足这些属性的概念。我们在图像和文本数据的五个不同数据集上评估了CCE。评估表明,与基线相比,CCE找到了更具组合性的概念表示,并在四个下游分类任务上取得了更高的准确率。代码和数据可在 https://github.com/adaminsky/compositional_concepts 获取。

英文摘要:

Concept-based interpretability methods offer a lens into the internals of foundation models by decomposing their embeddings into high-level concepts. These concept representations are most useful when they are compositional, meaning that the individual concepts compose to explain the full sample. We show that existing unsupervised concept extraction methods find concepts which are not compositional. To automatically discover compositional concept representations, we identify two salient properties of such representations, and propose Compositional Concept Extraction (CCE) for finding concepts which obey these properties. We evaluate CCE on five different datasets over image and text data. Our evaluation shows that CCE finds more compositional concept representations than baselines and yields better accuracy on four downstream classification tasks. Code and data are available at https://github.com/adaminsky/compositional_concepts .

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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