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Ricardo Guerrero

6 accepted papers

2026

No Hard Negatives Required: Concept Centric Learning Leads to Compositionality without Degrading Zero-shot Capabilities of Contrastive Models

CVPR 2026

Contrastive vision-language (V&L) models remain a popular choice for various applications. However, several limitations have emerged, most notably the limited ability of V&L models to learn compositional representations. Prior methods often addressed this limitation by generating custom training dat

Cited by 0SourcecodeScholar
2024

Efficient Vision-Language pre-training via domain-specific learning for human activities

EMNLP 2024main

Current Vision-Language (VL) models owe their success to large-scale pre-training on web-collected data, which in turn requires high-capacity architectures and large compute resources for training. We posit that when the downstream tasks are known in advance, which is in practice common, the pretrai…

2023

FS-DETR: Few-Shot DEtection TRansformer with Prompting and without Re-Training

ICCV 2023poster

This paper is on Few-Shot Object Detection (FSOD), where given a few templates (examples) depicting a novel class (not seen during training), the goal is to detect all of its occurrences within a set of images. From a practical perspective, an FSOD system must fulfil the following desiderata: (a) it…

Cited by 42PDFScholar
2022

SOS! Self-Supervised Learning over Sets of Handled Objects in Egocentric Action Recognition

ECCV 2022poster

"Learning an egocentric action recognition model from video data is challenging due to distractors in the background, e.g., irrelevant objects. Further integrating object information into an action model is hence beneficial. Existing methods often leverage a generic object detector to identify and r…

Cited by 11SourcePDFScholar
2022

Variational Continual Proxy-Anchor for Deep Metric Learning

AISTATS 2022poster

The recent proxy-anchor method achieved outstanding performance in deep metric learning, which can be acknowledged to its data efficient loss based on hard example mining, as well as far lower sampling complexity than pair-based approaches. In this paper we extend the proxy-anchor method by posing i…

Cited by 2SourcePDFScholar
2021

CHEF: Cross-modal Hierarchical Embeddings for Food Domain Retrieval

AAAI 2021technical

Despite the abundance of multi-modal data, such as image-text pairs, there has been little effort in understanding the individual entities and their different roles in the construction of these data instances. In this work, we endeavour to discover the entities and their corresponding importance in…