Search Results for author: Heikki Arponen

Found 5 papers, 0 papers with code

Learning by Hallucinating: Vision-Language Pre-training with Weak Supervision

no code implementations24 Oct 2022 Tzu-Jui Julius Wang, Jorma Laaksonen, Tomas Langer, Heikki Arponen, Tom E. Bishop

Moreover, in other V-L downstream tasks considered, our WFH models are on par with models trained with paired V-L data, revealing the utility of unpaired data.

Cross-Modal Retrieval Image Retrieval +3

Learning to hash with semantic similarity metrics and empirical KL divergence

no code implementations11 May 2020 Heikki Arponen, Tom E. Bishop

We address (ii) via a differentiable estimate of the KL divergence between network outputs and a binary target distribution, resulting in minimal information loss when the features are rounded to binary.

Image Retrieval Retrieval +4

SHREWD: Semantic Hierarchy-based Relational Embeddings for Weakly-supervised Deep Hashing

no code implementations12 Aug 2019 Heikki Arponen, Tom E. Bishop

Using class labels to represent class similarity is a typical approach to training deep hashing systems for retrieval; samples from the same or different classes take binary 1 or 0 similarity values.

Binarization Deep Hashing

SHREWD: Semantic Hierarchy Based Relational Embeddings For Weakly-Supervised Deep Hashing

no code implementations ICLR Workshop LLD 2019 Heikki Arponen, Tom E Bishop

Using class labels to represent class similarity is a typical approach to training deep hashing systems for retrieval; samples from the same or different classes take binary 1 or 0 similarity values.

Binarization Deep Hashing

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

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