Search Results for author: Markos Georgopoulos

Found 15 papers, 5 papers with code

Multilinear Mixture of Experts: Scalable Expert Specialization through Factorization

1 code implementation19 Feb 2024 James Oldfield, Markos Georgopoulos, Grigorios G. Chrysos, Christos Tzelepis, Yannis Panagakis, Mihalis A. Nicolaou, Jiankang Deng, Ioannis Patras

The Mixture of Experts (MoE) paradigm provides a powerful way to decompose inscrutable dense layers into smaller, modular computations often more amenable to human interpretation, debugging, and editability.

Attribute counterfactual

Leveraging the Context through Multi-Round Interactions for Jailbreaking Attacks

no code implementations14 Feb 2024 Yixin Cheng, Markos Georgopoulos, Volkan Cevher, Grigorios G. Chrysos

We contend that the prior context--the information preceding the attack query--plays a pivotal role in enabling potent Jailbreaking attacks.

Multilinear Operator Networks

no code implementations31 Jan 2024 Yixin Cheng, Grigorios G. Chrysos, Markos Georgopoulos, Volkan Cevher

On the other hand, Polynomial Networks is a class of models that does not require activation functions, but have yet to perform on par with modern architectures.

HumanRF: High-Fidelity Neural Radiance Fields for Humans in Motion

1 code implementation10 May 2023 Mustafa Işık, Martin Rünz, Markos Georgopoulos, Taras Khakhulin, Jonathan Starck, Lourdes Agapito, Matthias Nießner

To close the gap to production-level quality, we introduce HumanRF, a 4D dynamic neural scene representation that captures full-body appearance in motion from multi-view video input, and enables playback from novel, unseen viewpoints.

Motion Synthesis Novel View Synthesis +1

Cluster-guided Image Synthesis with Unconditional Models

no code implementations CVPR 2022 Markos Georgopoulos, James Oldfield, Grigorios G Chrysos, Yannis Panagakis

The results highlight the ability of our approach to condition image generation on attributes like gender, pose and hair style on faces, as well as a variety of features on different object classes.

Image Generation

Tensor Component Analysis for Interpreting the Latent Space of GANs

no code implementations23 Nov 2021 James Oldfield, Markos Georgopoulos, Yannis Panagakis, Mihalis A. Nicolaou, Ioannis Patras

This paper addresses the problem of finding interpretable directions in the latent space of pre-trained Generative Adversarial Networks (GANs) to facilitate controllable image synthesis.

Image Generation

Multilinear Latent Conditioning for Generating Unseen Attribute Combinations

no code implementations ICML 2020 Markos Georgopoulos, Grigorios Chrysos, Maja Pantic, Yannis Panagakis

Deep generative models rely on their inductive bias to facilitate generalization, especially for problems with high dimensional data, like images.

Attribute Inductive Bias

Enhancing Facial Data Diversity with Style-based Face Aging

no code implementations6 Jun 2020 Markos Georgopoulos, James Oldfield, Mihalis A. Nicolaou, Yannis Panagakis, Maja Pantic

By evaluating on several age-annotated datasets in both single- and cross-database experiments, we show that the proposed method outperforms state-of-the-art algorithms for age transfer, especially in the case of age groups that lie in the tails of the label distribution.

Data Augmentation

Investigating Bias in Deep Face Analysis: The KANFace Dataset and Empirical Study

no code implementations15 May 2020 Markos Georgopoulos, Yannis Panagakis, Maja Pantic

In this work, we investigate the demographic bias of deep learning models in face recognition, age estimation, gender recognition and kinship verification.

Age Estimation Face Recognition +1

Modeling of Facial Aging and Kinship: A Survey

no code implementations13 Feb 2018 Markos Georgopoulos, Yannis Panagakis, Maja Pantic

Computational facial models that capture properties of facial cues related to aging and kinship increasingly attract the attention of the research community, enabling the development of reliable methods for age progression, age estimation, age-invariant facial characterization, and kinship verification from visual data.

Age Estimation Kinship Verification

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