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Artemis Panagopoulou

8 accepted papers

2025

Contra4: Evaluating Contrastive Cross-Modal Reasoning in Audio, Video, Image, and 3D

EMNLP 2025

Real-world decision-making often begins with identifying which modality contains the most relevant information for a given query. While recent multimodal models have made impressive progress in processing diverse inputs, it remains unclear whether they can reason contrastively across multiple modali

Cited by 0SourcePDFScholar
2025

ViUniT: Visual Unit Tests for More Robust Visual Programming

CVPR 2025poster

Programming based approaches to reasoning tasks have substantially expanded the types of questions models can answer about visual scenes.Yet on benchmark visual reasoning data, when answering correctly, such models produce incorrect programs 33% of the time. These models are often right for the wron…

2024

ULIP-2: Towards Scalable Multimodal Pre-training for 3D Understanding

CVPR 2024poster

Recent advancements in multimodal pre-training have shown promising efficacy in 3D representation learning by aligning multimodal features across 3D shapes their 2D counterparts and language descriptions. However the methods used by existing frameworks to curate such multimodal data in particular la…

2023

I Spy a Metaphor: Large Language Models and Diffusion Models Co-Create Visual Metaphors

ACL 2023findings

Visual metaphors are powerful rhetorical devices used to persuade or communicate creative ideas through images. Similar to linguistic metaphors, they convey meaning implicitly through symbolism and juxtaposition of the symbols. We propose a new task of generating visual metaphors from linguistic met…

2023

Language in a Bottle: Language Model Guided Concept Bottlenecks for Interpretable Image Classification

CVPR 2023poster

Concept Bottleneck Models (CBM) are inherently interpretable models that factor model decisions into human-readable concepts. They allow people to easily understand why a model is failing, a critical feature for high-stakes applications. CBMs require manually specified concepts and often under-perfo…

2022

Visualizing the Obvious: A Concreteness-based Ensemble Model for Noun Property Prediction

EMNLP 2022finding

Neural language models encode rich knowledge about entities and their relationships which can be extracted from their representations using probing. Common properties of nouns (e.g., red strawberries, small ant) are, however, more challenging to extract compared to other types of knowledge because t…

2021

Self-Supervised Optical Flow with Spiking Neural Networks and Event Based Cameras

IROS 2021poster

Optical flow can be leveraged in robotic systems for obstacle detection where low latency solutions are critical in highly dynamic settings. While event-based cameras have changed the dominant paradigm of sending by encoding stimuli into spike trails, offering low bandwidth and latency, events are s…

Cited by 19SourceScholar
2021

Visual Goal-Step Inference using wikiHow

EMNLP 2021main

Understanding what sequence of steps are needed to complete a goal can help artificial intelligence systems reason about human activities. Past work in NLP has examined the task of goal-step inference for text. We introduce the visual analogue. We propose the Visual Goal-Step Inference (VGSI) task,…