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A Disentangled Recognition and Nonlinear Dynamics Model for Unsupervised Learning

NeurIPS 2017 · Video › Video segmentation and tracking · approach: Stochastic video prediction

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use KVAE with a CNN encoder-decoder instead of DVBFPendulum · Pendulum testELBO: 798.56 -> 810.08Helped
Use KVAE with a CNN encoder-decoder instead of DMMPendulum · Pendulum testELBO: 784.70 -> 810.08Helped
Use the CNN encoder-decoder rather than the MLP encoder-decoder (ablation)KVAE · Pendulum testELBO: 807.02 -> 810.08Helped
Use Kalman smoothing rather than filtering for missing-frame imputationKVAE · Bouncing ball, random missing framesfraction of incorrectly guessed pixelsHelped
Use Kalman smoothing to incorporate future observations when imputing a consecutive gapKVAE · Bouncing ball, consecutive missing framesfraction of incorrectly guessed pixelsHelped
Replace the LSTM dynamics parameter network with an MLP (ablation)KVAE · Bouncing ballimputation performanceHurt
Replace the LSTM dynamics parameter network with an RNN (ablation)KVAE · Bouncing ballimputation performanceHurt
Replace the LSTM dynamics parameter network with a FIFO MLP (ablation)KVAE · Bouncing ballimputation performanceHurt
Train with 30% or 40% missing data rather than complete training sequences (ablation)KVAE · Bouncing ballimputation accuracyHurt
Use smoothing after training with 30% or 40% missing data rather than filtering with all training data availableKVAE · Bouncing ballimputation accuracyHelped

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