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Lena Krieger

4 accepted papers

2026

Internal Evaluation of Density-Based Clusterings with Noise

ICLR 2026poster

Evaluating the quality of a clustering result without access to ground truth labels is fundamental for research in data mining. However, most cluster validation indices (CVIs) do not consider the noise assignments by density-based clustering methods like DBSCAN or HDBSCAN, even though the ability to…

Cited by 0SourceScholar
2026

RECAST: Model Reconstruction via Counterfactual-Aware Wasserstein Geometry under Limited Data

ICML 2026poster

Counterfactual explanations (CFs) help understand machine learning models by identifying minimal input changes that would lead to alternative model outcomes. Recent work demonstrates their utility for reconstructing black-box models, enabling third-party auditing of opaque decision systems for fairn…

Cited by 0SourceScholar
2025

FairDen: Fair Density-Based Clustering

ICLR 2025poster

Fairness in data mining tasks like clustering has recently become an increasingly important aspect. However, few clustering algorithms exist that focus on fair groupings of data with sensitive attributes. Including fairness in the clustering objective is especially hard for density-based clusterin…

Cited by 0SourcePDFScholar
2025

LeapFactual: Reliable Visual Counterfactual Explanation Using Conditional Flow Matching

NeurIPS 2025poster

The growing integration of machine learning (ML) and artificial intelligence (AI) models into high-stakes domains such as healthcare and scientific research calls for models that are not only accurate but also interpretable. Among the existing explainable methods, counterfactual explanations offer i…

Cited by 0SourceScholar