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Bardh Prenkaj

13 accepted papers

2026

Active Tabular Augmentation via Policy-Guided Diffusion Inpainting

ICML 2026poster

Generative tabular augmentation is appealing in data-scarce domains, yet the prevailing focus on distributional fidelity does not reliably translate into better downstream models. We formalize a *fidelity-utility gap*: common generative objectives prioritize distributional plausibility, whereas augm…

Cited by 0SourceScholar
2025

CURE: Controlled Unlearning for Robust Embeddings — Mitigating Conceptual Shortcuts in Pre-Trained Language Models

EMNLP 2025

Pre-trained language models have achieved remarkable success across diverse applications but remain susceptible to spurious, concept-driven correlations that impair robustness and fairness. In this work, we introduce CURE, a novel and lightweight framework that systematically disentangles and suppre

Cited by 0SourcePDFScholar
2025

Doubling Your Data in Minutes: Ultra-fast Tabular Data Generation via LLM-Induced Dependency Graphs

EMNLP 2025

Tabular data is critical across diverse domains, yet high-quality datasets remain scarce due to privacy concerns and the cost of collection. Contemporary approaches adopt large language models (LLMs) for tabular augmentation, but exhibit two major limitations: (1) dense dependency modeling among tab

Cited by 0SourcePDFScholar
2025

Graph Inverse Style Transfer for Counterfactual Explainability

ICML 2025poster

Counterfactual explainability seeks to uncover model decisions by identifying minimal changes to the input that alter the predicted outcome. This task becomes particularly challenging for graph data due to preserving structural integrity and semantic meaning. Unlike prior approaches that rely on for…

Cited by 0SourcePDFScholar
2025

Not All Features Deserve Attention: Graph-Guided Dependency Learning for Tabular Data Generation with Language Models

EMNLP 2025

Large Language Models (LLMs) have shown strong potential for tabular data generation by modeling textualized feature-value pairs. However, tabular data inherently exhibits sparse feature-level dependencies, where many feature interactions are structurally insignificant. This creates a fundamental mi

Cited by 0SourcePDFScholar
2025

Probabilistic Aggregation and Targeted Embedding Optimization for Collective Moral Reasoning in Large Language Models

ACL 2025finding

Large Language Models (LLMs) have shown impressive moral reasoning abilities. Yet they often diverge when confronted with complex, multi-factor moral dilemmas. To address these discrepancies, we propose a framework that synthesizes multiple LLMs’ moral judgments into a collectively formulated moral…

2025

RAZOR: Sharpening Knowledge by Cutting Bias with Unsupervised Text Rewriting

AAAI 2025technical

Despite the widespread use of LLMs due to their superior performance in various tasks, their high computational costs often lead potential users to opt for the pretraining-finetuning pipeline. However, biases prevalent in manually constructed datasets can introduce spurious correlations between toke…

2025

SCISSOR: Mitigating Semantic Bias through Cluster-Aware Siamese Networks for Robust Classification

ICML 2025poster

Shortcut learning undermines model generalization to out-of-distribution data. While the literature attributes shortcuts to biases in superficial features, we show that imbalances in the semantic distribution of sample embeddings induce spurious semantic correlations, compromising model robustness.…

2024

Robust Stochastic Graph Generator for Counterfactual Explanations

AAAI 2024technical

Counterfactual Explanation (CE) techniques have garnered attention as a means to provide insights to the users engaging with AI systems. While extensively researched in domains such as medical imaging and autonomous vehicles, Graph Counterfactual Explanation (GCE) methods have been comparatively und…

2024

Semantically Guided Representation Learning For Action Anticipation

ECCV 2024poster

"Action anticipation is the task of forecasting future activity from a partially observed sequence of events. However, this task is exposed to intrinsic future uncertainty and the difficulty of reasoning upon interconnected actions. Unlike previous works that focus on extrapolating better visual and…

2023

Multimodal Motion Conditioned Diffusion Model for Skeleton-based Video Anomaly Detection

ICCV 2023poster

Anomalies are rare and anomaly detection is often therefore framed as One-Class Classification (OCC), i.e. trained solely on normalcy. Leading OCC techniques constrain the latent representations of normal motions to limited volumes and detect as abnormal anything outside, which accounts satisfactori…

Cited by 50PDFcodeScholar