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- W4310001157 abstract "Disentangled sequential autoencoders (DSAEs) represent a class of probabilistic graphical models that describes an observed sequence with dynamic latent variables and a static latent variable. The former encode information at a frame rate identical to the observation, while the latter globally governs the entire sequence. This introduces an inductive bias and facilitates unsupervised disentanglement of the underlying local and global factors. In this paper, we show that the vanilla DSAE suffers from being sensitive to the choice of model architecture and capacity of the dynamic latent variables, and is prone to collapse the static latent variable. As a countermeasure, we propose TS-DSAE, a two-stage training framework that first learns sequence-level prior distributions, which are subsequently employed to regularise the model and facilitate auxiliary objectives to promote disentanglement. The proposed framework is fully unsupervised and robust against the global factor collapse problem across a wide range of model configurations. It also avoids typical solutions such as adversarial training which usually involves laborious parameter tuning, and domain-specific data augmentation. We conduct quantitative and qualitative evaluations to demonstrate its robustness in terms of disentanglement on both artificial and real-world music audio datasets." @default.
- W4310001157 created "2022-11-30" @default.
- W4310001157 creator A5001413512 @default.
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- W4310001157 date "2022-05-12" @default.
- W4310001157 modified "2023-10-16" @default.
- W4310001157 title "Towards Robust Unsupervised Disentanglement of Sequential Data -- A Case Study Using Music Audio" @default.
- W4310001157 doi "https://doi.org/10.48550/arxiv.2205.05871" @default.
- W4310001157 hasPublicationYear "2022" @default.
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