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Ioannis Konstas

14 accepted papers

2025

CROPE: Evaluating In-Context Adaptation of Vision and Language Models to Culture-Specific Concepts

NAACL 2025long

As Vision and Language models (VLMs) become accessible across the globe, it is important that they demonstrate cultural knowledge. In his paper, we introduce CROPE, a visual question answering benchmark designed to probe the knowledge of culture-specific concepts and evaluate the capacity for cultur…

2024

AlanaVLM: A Multimodal Embodied AI Foundation Model for Egocentric Video Understanding

EMNLP 2024finding

AI personal assistants deployed via robots or wearables require embodied understanding to collaborate with humans effectively. However, current Vision-Language Models (VLMs) primarily focus on third-person view videos, neglecting the richness of egocentric perceptual experience. To address this gap,…

2024

Investigating the Role of Instruction Variety and Task Difficulty in Robotic Manipulation Tasks

EMNLP 2024main

Evaluating the generalisation capabilities of multimodal models based solely on their performance on out-of-distribution data fails to capture their true robustness. This work introduces a comprehensive evaluation framework that systematically examines the role of instructions and inputs in the gene…

2024

Re-examining Sexism and Misogyny Classification with Annotator Attitudes

EMNLP 2024finding

Gender-Based Violence (GBV) is an increasing problem online, but existing datasets fail to capture the plurality of possible annotator perspectives or ensure the representation of affected groups. We revisit two important stages in the moderation pipeline for GBV: (1) manual data labelling; and (2)…

Cited by 2SourcePDFScholar
2024

Reasoning or a Semblance of it? A Diagnostic Study of Transitive Reasoning in LLMs

EMNLP 2024main

Evaluating Large Language Models (LLMs) on reasoning benchmarks demonstrates their ability to solve compositional questions. However, little is known of whether these models engage in genuine logical reasoning or simply rely on implicit cues to generate answers. In this paper, we investigate the tra…

Cited by 0SourcePDFScholar
2023

Detecting Edit Failures In Large Language Models: An Improved Specificity Benchmark

ACL 2023findings

Recent model editing techniques promise to mitigate the problem of memorizing false or outdated associations during LLM training. However, we show that these techniques can introduce large unwanted side effects which are not detected by existing specificity benchmarks. We extend the existing Counter…

2023

Multitask Multimodal Prompted Training for Interactive Embodied Task Completion

EMNLP 2023long main

Interactive and embodied tasks pose at least two fundamental challenges to existing Vision \& Language (VL) models, including 1) grounding language in trajectories of actions and observations, and 2) referential disambiguation. To tackle these challenges, we propose an Embodied MultiModal Agent (EMM…

Cited by 0SourceScholar
2023

The Dangers of trusting Stochastic Parrots: Faithfulness and Trust in Open-domain Conversational Question Answering

ACL 2023findings

Large language models are known to produce output which sounds fluent and convincing, but is also often wrong, e.g. “unfaithful” with respect to a rationale as retrieved from a knowledge base. In this paper, we show that task-based systems which exhibit certain advanced linguistic dialog behaviors,…

Cited by 34SourcePDFScholar
2023

The Larger they are, the Harder they Fail: Language Models do not Recognize Identifier Swaps in Python

ACL 2023findings

Large Language Models (LLMs) have successfully been applied to code generation tasks, raising the question of how well these models understand programming. Typical programming languages have invariances and equivariances in their semantics that human programmers intuitively understand and exploit, s…

2021

AggGen: Ordering and Aggregating while Generating

ACL 2021long

We present AggGen (pronounced ‘again’) a data-to-text model which re-introduces two explicit sentence planning stages into neural data-to-text systems: input ordering and input aggregation. In contrast to previous work using sentence planning, our model is still end-to-end: AggGen performs sentence…

2021

MiRANews: Dataset and Benchmarks for Multi-Resource-Assisted News Summarization

EMNLP 2021finding

One of the most challenging aspects of current single-document news summarization is that the summary often contains ‘extrinsic hallucinations’, i.e., facts that are not present in the source document, which are often derived via world knowledge. This causes summarisation systems to act more like op…

2021

OTTers: One-turn Topic Transitions for Open-Domain Dialogue

ACL 2021long

Mixed initiative in open-domain dialogue requires a system to pro-actively introduce new topics. The one-turn topic transition task explores how a system connects two topics in a cooperative and coherent manner. The goal of the task is to generate a “bridging” utterance connecting the new topic to t…

2020

Imagining Grounded Conceptual Representations from Perceptual Information in Situated Guessing Games

COLING 2020main

In visual guessing games, a Guesser has to identify a target object in a scene by asking questions to an Oracle. An effective strategy for the players is to learn conceptual representations of objects that are both discriminative and expressive enough to ask questions and guess correctly. However, a…