Search Results for author: Dimche Kostadinov

Found 15 papers, 1 papers with code

Saliency Diversified Deep Ensemble for Robustness to Adversaries

no code implementations AAAI Workshop AdvML 2022 Alex Bogun, Dimche Kostadinov, Damian Borth

We empirically show a reduced transferability between ensemble members and improved performance compared to the state-of-the-art ensemble defense against medium and high strength white-box attacks.

Zero-shot Voice Conversion via Self-supervised Prosody Representation Learning

no code implementations27 Oct 2021 Shijun Wang, Dimche Kostadinov, Damian Borth

We then use the learned prosodic representations as conditional information to train and enhance our VC model for zero-shot conversion.

Disentanglement Voice Conversion

Privacy-Preserving Near Neighbor Search via Sparse Coding with Ambiguation

no code implementations8 Feb 2021 Behrooz Razeghi, Sohrab Ferdowsi, Dimche Kostadinov, Flavio. P. Calmon, Slava Voloshynovskiy

In this paper, we propose a framework for privacy-preserving approximate near neighbor search via stochastic sparsifying encoding.

Fairness Privacy Preserving

Network Learning with Local Propagation

no code implementations20 May 2018 Dimche Kostadinov, Behrooz Razeghi, Sohrab Ferdowsi, Slava Voloshynovskiy

This paper presents a locally decoupled network parameter learning with local propagation.

Learning non-linear transform with discriminative and minimum information loss priors

no code implementations ICLR 2018 Dimche Kostadinov, Slava Voloshynovskiy

A novel measure related to the discriminative prior is proposed and defined on the support intersection for the transform representations.

A multi-layer network based on Sparse Ternary Codes for universal vector compression

no code implementations31 Oct 2017 Sohrab Ferdowsi, Slava Voloshynovskiy, Dimche Kostadinov

We present the multi-layer extension of the Sparse Ternary Codes (STC) for fast similarity search where we focus on the reconstruction of the database vectors from the ternary codes.

A multi-layer image representation using Regularized Residual Quantization: application to compression and denoising

no code implementations7 Jul 2017 Sohrab Ferdowsi, Slava Voloshynovskiy, Dimche Kostadinov

A learning-based framework for representation of domain-specific images is proposed where joint compression and denoising can be done using a VQ-based multi-layer network.

Denoising Quantization

Regularized Residual Quantization: a multi-layer sparse dictionary learning approach

no code implementations1 May 2017 Sohrab Ferdowsi, Slava Voloshynovskiy, Dimche Kostadinov

Furthermore, we also propose a general-purpose pre-processing for natural images which makes them suitable for such quantization.

Dictionary Learning Quantization +1

Sparse Ternary Codes for similarity search have higher coding gain than dense binary codes

no code implementations26 Jan 2017 Sohrab Ferdowsi, Slava Voloshynovskiy, Dimche Kostadinov, Taras Holotyak

This paper addresses the problem of Approximate Nearest Neighbor (ANN) search in pattern recognition where feature vectors in a database are encoded as compact codes in order to speed-up the similarity search in large-scale databases.

Binarization

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