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Diffusion models learn semantic representations while generating images. In the Decoupled Diffusion Transformer (DDT), a condition encoder provides features that guide a velocity decoder in denoising. To enable effective denoising at all noise levels, these features must capture both high-level abstract structures and...
Recent successes of matrix- and curvature-based optimizers have renewed interest in how update geometry shapes learning. These methods normalize or precondition updates, changing how different components progress during training. In deep matrix factorization, the geometry that slows gradient descent (GD) favors low-ran...
This paper proposes conditioned initialization, a principled scheme that initializes attention weights to improve the spectral properties of the attention layer and shows that conditioned initialization can potentially reduce the condition number of the attention Jacobian, leading to more stable optimization.
The results show that standard transformers are rarely a local optimum in the space of architectures, and suggests that there may be room for improved architectures that better support multiple capabilities simultaneously, such as fluency and robust reasoning.
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