Search Results for author: Adín Ramírez Rivera

Found 17 papers, 9 papers with code

Representation Learning via Consistent Assignment of Views over Random Partitions

1 code implementation NeurIPS 2023 Thalles Silva, Adín Ramírez Rivera

We extensively ablate our method and demonstrate that our proposed random partition pretext task improves the quality of the learned representations by devising multiple random classification tasks.

Copy Detection Image Retrieval +3

SelfGraphVQA: A Self-Supervised Graph Neural Network for Scene-based Question Answering

no code implementations3 Oct 2023 Bruno Souza, Marius Aasan, Helio Pedrini, Adín Ramírez Rivera

Scene graphs (SGs) have emerged as a useful tool for multimodal image analysis, showing impressive performance in tasks such as Visual Question Answering (VQA).

Question Answering Visual Question Answering

Self-supervised Learning of Contextualized Local Visual Embeddings

1 code implementation1 Oct 2023 Thalles Santos Silva, Helio Pedrini, Adín Ramírez Rivera

We present Contextualized Local Visual Embeddings (CLoVE), a self-supervised convolutional-based method that learns representations suited for dense prediction tasks.

Instance Segmentation Keypoint Detection +4

Global and Local Features through Gaussian Mixture Models on Image Semantic Segmentation

1 code implementation19 Jul 2022 Darwin Saire, Adín Ramírez Rivera

Our proposed model addresses this problem by providing an internal structure for the feature representations while extracting a global representation that supports the former.

Clustering Segmentation +1

RepFair-GAN: Mitigating Representation Bias in GANs Using Gradient Clipping

no code implementations13 Jul 2022 Patrik Joslin Kenfack, Kamil Sabbagh, Adín Ramírez Rivera, Adil Khan

Fairness has become an essential problem in many domains of Machine Learning (ML), such as classification, natural language processing, and Generative Adversarial Networks (GANs).

Fairness

A deep learning approach to halo merger tree construction

no code implementations31 May 2022 Sandra Robles, Jonathan S. Gómez, Adín Ramírez Rivera, Nelson D. Padilla, Diego Dujovne

A key ingredient for semi-analytic models (SAMs) of galaxy formation is the mass assembly history of haloes, encoded in a tree structure.

Representation Learning via Consistent Assignment of Views to Clusters

1 code implementation31 Dec 2021 Thalles Silva, Adín Ramírez Rivera

We introduce Consistent Assignment for Representation Learning (CARL), an unsupervised learning method to learn visual representations by combining ideas from self-supervised contrastive learning and deep clustering.

Clustering Contrastive Learning +3

Empirical Study of Multi-Task Hourglass Model for Semantic Segmentation Task

1 code implementation28 May 2021 Darwin Saire, Adín Ramírez Rivera

The semantic segmentation (SS) task aims to create a dense classification by labeling at the pixel level each object present on images.

Edge Detection Segmentation +1

On the Pitfalls of Learning with Limited Data: A Facial Expression Recognition Case Study

no code implementations2 Apr 2021 Miguel Rodríguez Santander, Juan Hernández Albarracín, Adín Ramírez Rivera

In this paper, we explore the effects of stacking databases, model initialization, and data amplification techniques when training with limited data on deep learning models' performance.

Data Augmentation Facial Expression Recognition +4

Hierarchical Transformer for Multilingual Machine Translation

no code implementations EACL (VarDial) 2021 Albina Khusainova, Adil Khan, Adín Ramírez Rivera, Vitaly Romanov

The choice of parameter sharing strategy in multilingual machine translation models determines how optimally parameter space is used and hence, directly influences ultimate translation quality.

Machine Translation Translation

Consistent Assignment for Representation Learning

no code implementations ICLR Workshop EBM 2021 Thalles Santos Silva, Adín Ramírez Rivera

An unsupervised learning method to learn visual representations by combining contrastive learning with deep clustering.

Clustering Contrastive Learning +2

Video Reenactment as Inductive Bias for Content-Motion Disentanglement

1 code implementation30 Jan 2021 Juan F. Hernández Albarracín, Adín Ramírez Rivera

Experiments on video reenactment show the effectiveness of our disentanglement in the input space where our model outperforms the baselines in reconstruction quality and motion alignment.

Disentanglement Inductive Bias +1

Multi-Stream Networks and Ground-Truth Generation for Crowd Counting

1 code implementation23 Feb 2020 Rodolfo Quispe, Darwin Ttito, Adín Ramírez Rivera, Helio Pedrini

Crowd scene analysis has received a lot of attention recently due to the wide variety of applications, for instance, forensic science, urban planning, surveillance and security.

Crowd Counting Face Detection

A Halo Merger Tree Generation and Evaluation Framework

no code implementations22 Jun 2019 Sandra Robles, Jonathan S. Gómez, Adín Ramírez Rivera, Jenny A. González, Nelson D. Padilla, Diego Dujovne

Our aim is to provide a new framework for halo merger tree generation that takes advantage of the results of large volume simulations, with a modest computational cost.

Generative Adversarial Network

Graph Learning Network: A Structure Learning Algorithm

1 code implementation29 May 2019 Darwin Saire Pilco, Adín Ramírez Rivera

We propose the Graph Learning Network (GLN), a simple yet effective process to learn node embeddings and structure prediction functions.

Community Detection General Classification +3

SART - Similarity, Analogies, and Relatedness for Tatar Language: New Benchmark Datasets for Word Embeddings Evaluation

1 code implementation31 Mar 2019 Albina Khusainova, Adil Khan, Adín Ramírez Rivera

We evaluate state-of-the-art word embedding models for two languages using our proposed datasets for Tatar and the original datasets for English and report our findings on performance comparison.

Embeddings Evaluation Language Modelling

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