When does compositional structure yield compositional generalization? A kernel theory

• URL: http://arxiv.org/abs/2405.16391v2
• Date: Mon, 07 Oct 2024 22:55:53 GMT
• Title: When does compositional structure yield compositional generalization? A kernel theory
• Authors: Samuel Lippl, Kim Stachenfeld,
• Abstract summary: We present a theory of compositional generalization in kernel models with fixed representations. We identify novel failure modes in compositional generalization that arise from biases in the training data. This work provides a theoretical perspective on how statistical structure in the training data can affect compositional generalization.
• Score: 0.0
• License:
• Abstract: Compositional generalization (the ability to respond correctly to novel combinations of familiar components) is thought to be a cornerstone of intelligent behavior. Compositionally structured (e.g. disentangled) representations are essential for this; however, the conditions under which they yield compositional generalization remain unclear. To address this gap, we present a general theory of compositional generalization in kernel models with fixed representations, a tractable framework for characterizing the impact of dataset statistics on generalization. We find that kernel models are constrained to adding up values assigned to each combination of components seen during training ("conjunction-wise additivity"). This imposes fundamental restrictions on the set of tasks these models can learn, in particular preventing them from transitively generalizing equivalence relations. Even for compositional tasks that kernel models can in principle learn, we identify novel failure modes in compositional generalization that arise from biases in the training data and affect important compositional building blocks such as symbolic addition and context dependence (memorization leak and shortcut bias). Finally, we empirically validate our theory, showing that it captures the behavior of deep neural networks (convolutional networks, residual networks, and Vision Transformers) trained on a set of compositional tasks with similarly structured data. Ultimately, this work provides a theoretical perspective on how statistical structure in the training data can affect compositional generalization, with implications for how to identify and remedy failure modes in deep learning models.

Related papers

• What makes Models Compositional? A Theoretical View: With Supplement [60.284698521569936]
  We propose a general neuro-symbolic definition of compositional functions and their compositional complexity. We show how various existing general and special purpose sequence processing models fit this definition and use it to analyze their compositional complexity.
  arXiv  Detail & Related papers  (2024-05-02T20:10:27Z)
• Skews in the Phenomenon Space Hinder Generalization in Text-to-Image Generation [59.138470433237615]
  We introduce statistical metrics that quantify both the linguistic and visual skew of a dataset for relational learning. We show that systematically controlled metrics are strongly predictive of generalization performance. This work informs an important direction towards quality-enhancing the data diversity or balance to scaling up the absolute size.
  arXiv  Detail & Related papers  (2024-03-25T03:18:39Z)
• Towards Understanding the Relationship between In-context Learning and Compositional Generalization [7.843029855730508]
  We train a causal Transformer in a setting that renders ordinary learning very difficult. The model can solve the task, however, by utilizing earlier examples to generalize to later ones. In evaluations on the datasets, SCAN, COGS, and GeoQuery, models trained in this manner indeed show improved compositional generalization.
  arXiv  Detail & Related papers  (2024-03-18T14:45:52Z)
• Provable Compositional Generalization for Object-Centric Learning [55.658215686626484]
  Learning representations that generalize to novel compositions of known concepts is crucial for bridging the gap between human and machine perception. We show that autoencoders that satisfy structural assumptions on the decoder and enforce encoder-decoder consistency will learn object-centric representations that provably generalize compositionally.
  arXiv  Detail & Related papers  (2023-10-09T01:18:07Z)
• On Neural Architecture Inductive Biases for Relational Tasks [76.18938462270503]
  We introduce a simple architecture based on similarity-distribution scores which we name Compositional Network generalization (CoRelNet) We find that simple architectural choices can outperform existing models in out-of-distribution generalizations.
  arXiv  Detail & Related papers  (2022-06-09T16:24:01Z)
• Compositional Generalization Requires Compositional Parsers [69.77216620997305]
  We compare sequence-to-sequence models and models guided by compositional principles on the recent COGS corpus. We show structural generalization is a key measure of compositional generalization and requires models that are aware of complex structure.
  arXiv  Detail & Related papers  (2022-02-24T07:36:35Z)
• Improving Compositional Generalization in Classification Tasks via Structure Annotations [33.90268697120572]
  Humans have a great ability to generalize compositionally, but state-of-the-art neural models struggle to do so. First, we study ways to convert a natural language sequence-to-sequence dataset to a classification dataset that also requires compositional generalization. Second, we show that providing structural hints (specifically, providing parse trees and entity links as attention masks for a Transformer model) helps compositional generalization.
  arXiv  Detail & Related papers  (2021-06-19T06:07:27Z)
• Meta-Learning to Compositionally Generalize [34.656819307701156]
  We implement a meta-learning augmented version of supervised learning. We construct pairs of tasks for meta-learning by sub-sampling existing training data. Experimental results on the COGS and SCAN datasets show that our similarity-driven meta-learning can improve generalization performance.
  arXiv  Detail & Related papers  (2021-06-08T11:21:48Z)
• Compositional Generalization by Learning Analytical Expressions [87.15737632096378]
  A memory-augmented neural model is connected with analytical expressions to achieve compositional generalization. Experiments on the well-known benchmark SCAN demonstrate that our model seizes a great ability of compositional generalization.
  arXiv  Detail & Related papers  (2020-06-18T15:50:57Z)
• Does syntax need to grow on trees? Sources of hierarchical inductive bias in sequence-to-sequence networks [28.129220683169052]
  In neural network models, inductive biases could in theory arise from any aspect of the model architecture. We investigate which architectural factors affect the generalization behavior of neural sequence-to-sequence models trained on two syntactic tasks.
  arXiv  Detail & Related papers  (2020-01-10T19:02:52Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.