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Umut Güçlü

7 accepted papers

2024

MonkeySee: Space-time-resolved reconstructions of natural images from macaque multi-unit activity

NeurIPS 2024poster

In this paper, we reconstruct naturalistic images directly from macaque brain signals using a convolutional neural network (CNN) based decoder. We investigate the ability of this CNN-based decoding technique to differentiate among neuronal populations from areas V1, V4, and IT, revealing distinct re…

Cited by 0SourcePDFScholar
2020

The Indian Chefs Process

UAI 2020poster

This paper introduces the Indian chefs process (ICP) as a Bayesian nonparametric prior on the joint space of infinite directed acyclic graphs (DAGs) and orders that generalizes the Indian buffet process. As our construction shows, the proposed distribution relies on a latent Beta process controlling…

2019

Forward Amortized Inference for Likelihood-Free Variational Marginalization

AISTATS 2019poster

In this paper, we introduce a new form of amortized variational inference by using the forward KL divergence in a joint-contrastive variational loss. The resulting forward amortized variational inference is a likelihood-free method as its gradient can be sampled without bias and without requiring an…

Cited by 25SourcePDFScholar
2019

SpikeCaKe: Semi-Analytic Nonparametric Bayesian Inference for Spike-Spike Neuronal Connectivity

AISTATS 2019poster

In this paper we introduce a semi-analytic variational framework for approximating the posterior of a Gaussian processes coupled through non-linear emission models. While the semi-analytic method can be applied to a large class of models, the present paper is devoted to the analysis of causal connec…

Cited by 2SourcePDFScholar
2018

Wasserstein Variational Inference

NeurIPS 2018poster

This paper introduces Wasserstein variational inference, a new form of approximate Bayesian inference based on optimal transport theory. Wasserstein variational inference uses a new family of divergences that includes both f-divergences and the Wasserstein distance as special cases. The gradients of…

Cited by 61SourcePDFScholar
2017

Reconstructing perceived faces from brain activations with deep adversarial neural decoding

NeurIPS 2017poster

Here, we present a novel approach to solve the problem of reconstructing perceived stimuli from brain responses by combining probabilistic inference with deep learning. Our approach first inverts the linear transformation from latent features to brain responses with maximum a posteriori estimation a…

Cited by 91SourcePDFScholar