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Cristian Rodriguez-Opazo

7 accepted papers

2025

Mysteries of the Deep: Role of Intermediate Representations in Out of Distribution Detection

NeurIPS 2025poster

Out-of-distribution (OOD) detection is essential for reliably deploying machine learning models in the wild. Yet, most methods treat large pre-trained models as monolithic encoders and rely solely on their final-layer representations for detection. We challenge this wisdom. We reveal the intermediat…

Cited by 0SourceScholar
2025

RandLoRA: Full rank parameter-efficient fine-tuning of large models

ICLR 2025poster

Low-Rank Adaptation (LoRA) and its variants have shown impressive results in reducing the number of trainable parameters and memory requirements of large transformer networks while maintaining fine-tuning performance. The low-rank nature of the weight update inherently limits the representation powe…

Cited by 0SourcePDFScholar
2025

Synergy and Diversity in CLIP: Enhancing Performance Through Adaptive Backbone Ensembling

ICLR 2025poster

Contrastive Language-Image Pretraining (CLIP) stands out as a prominent method for image representation learning. Various architectures, from vision transformers~(ViTs) to convolutional networks (ResNets) have been trained with CLIP to serve as general solutions to diverse vision tasks. This paper e…

Cited by 1SourcePDFScholar
2024

Knowledge Composition using Task Vectors with Learned Anisotropic Scaling

NeurIPS 2024poster

Pre-trained models produce strong generic representations that can be adapted via fine-tuning on specialised datasets. The learned weight difference relative to the pre-trained model, known as a task vector, characterises the direction and stride of fine-tuning that enables the model to capture thes…

2024

MAVIS: Multi-Camera Augmented Visual-Inertial SLAM using SE2(3) Based Exact IMU Pre-integration

ICRA 2024poster

We present a novel optimization-based Visual-Inertial SLAM system designed for multiple partially over-lapped camera systems, named MAVIS. Our framework fully exploits the benefits of wide field-of-view from multi-camera systems, and the metric scale measurements provided by an inertial measurement…

Cited by 14SourcecodeScholar
2021

Image Retrieval on Real-Life Images With Pre-Trained Vision-and-Language Models

ICCV 2021poster

We extend the task of composed image retrieval, where an input query consists of an image and short textual description of how to modify the image. Existing methods have only been applied to non-complex images within narrow domains, such as fashion products, thereby limiting the scope of study on in…

Cited by 235PDFcodeScholar
2021

VLN BERT: A Recurrent Vision-and-Language BERT for Navigation

CVPR 2021poster

Accuracy of many visiolinguistic tasks has benefited significantly from the application of vision-and-language (V&L) BERT. However, its application for the task of vision-and-language navigation (VLN) remains limited. One reason for this is the difficulty adapting the BERT architecture to the partia…

Cited by 319PDFcodeScholar