4 papers
On the Spectral Structure and Objective Equivalence of Orthogonal Multilabel Fisher Discriminants
Brian Keith-Norambuena, Juan Bekios-Calfa
We provide a unified theoretical analysis of Linear Discriminant Analysis with simultaneous multilabel scatter matrix formulations and Stiefel orthogonality constraints. Our contri…
Agenda-based Narrative Extraction: Steering Pathfinding Algorithms with Large Language Models
Brian Felipe Keith-Norambuena, Carolina Inés Rojas-Córdova, Claudio Juvenal Meneses-Villegas +4
Existing narrative extraction methods face a trade-off between coherence, interactivity, and multi-storyline support. Narrative Maps supports rich interaction and generates multipl…
Semantic Interaction for Narrative Map Sensemaking: An Insight-based Evaluation
Brian Felipe Keith-Norambuena, Fausto German, Eric Krokos +2
Semantic interaction (SI) enables analysts to incorporate their cognitive processes into AI models through direct manipulation of visualizations. While SI frameworks for narrative…
Toward a Machine Bertin: Why Visualization Needs Design Principles for Machine Cognition
Brian Keith-Norambuena
Visualization's design knowledge-effectiveness rankings, encoding guidelines, color models, preattentive processing rules -- derives from six decades of psychophysical studies of h…