Search Results for author: Harri Valpola

Found 10 papers, 6 papers with code

Improving Model-Based Control and Active Exploration with Reconstruction Uncertainty Optimization

no code implementations10 Dec 2018 Norman Di Palo, Harri Valpola

Model based predictions of future trajectories of a dynamical system often suffer from inaccuracies, forcing model based control algorithms to re-plan often, thus being computationally expensive, suboptimal and not reliable.

Active Learning

On the exact relationship between the denoising function and the data distribution

no code implementations6 Sep 2017 Heikki Arponen, Matti Herranen, Harri Valpola

We prove an exact relationship between the optimal denoising function and the data distribution in the case of additive Gaussian noise, showing that denoising implicitly models the structure of data allowing it to be exploited in the unsupervised learning of representations.

Denoising valid

Recurrent Ladder Networks

no code implementations NeurIPS 2017 Isabeau Prémont-Schwarz, Alexander Ilin, Tele Hotloo Hao, Antti Rasmus, Rinu Boney, Harri Valpola

We propose a recurrent extension of the Ladder networks whose structure is motivated by the inference required in hierarchical latent variable models.

Music Modeling

Tagger: Deep Unsupervised Perceptual Grouping

2 code implementations NeurIPS 2016 Klaus Greff, Antti Rasmus, Mathias Berglund, Tele Hotloo Hao, Jürgen Schmidhuber, Harri Valpola

We present a framework for efficient perceptual inference that explicitly reasons about the segmentation of its inputs and features.

General Classification Segmentation

Lateral Connections in Denoising Autoencoders Support Supervised Learning

1 code implementation30 Apr 2015 Antti Rasmus, Harri Valpola, Tapani Raiko

We show how a deep denoising autoencoder with lateral connections can be used as an auxiliary unsupervised learning task to support supervised learning.

Denoising General Classification

Denoising autoencoder with modulated lateral connections learns invariant representations of natural images

1 code implementation22 Dec 2014 Antti Rasmus, Tapani Raiko, Harri Valpola

Suitable lateral connections between encoder and decoder are shown to allow higher layers of a denoising autoencoder (dAE) to focus on invariant representations.

Denoising

From neural PCA to deep unsupervised learning

1 code implementation28 Nov 2014 Harri Valpola

The speedup offered by cost terms from higher levels of the hierarchy and the ability to learn invariant features are demonstrated in experiments.

Denoising

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