Ivar A. Hartmann

dblp:175/2861 · DBLP profile ↗
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3ranked-venue papers
1as first author
1since 2021 · last 2022
0000-0002-8497-6291ORCID · corroborated

Domains — the database's venue-derived domains; a paper can count in several

Security and privacy · 1 · 1 first-authorDatabases, data management, data science and information retrieval · 1 · 1 since 2021Graphics, computer vision, multimedia, augmented reality and games · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer graphics and multimedia
1 paper
Visualization and visual analytics · 67% Visual content generation and editing · 33%

Topics — the 3 heaviest of 3, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Visualization and visual analytics
layout algorithm
0.212016
Dealing with Multiple Requirements in Geometric Arrangements · IEEE Trans. Vis. Comput. Graph. 2016
Visual content generation and editing
layout generation
0.212016
Dealing with Multiple Requirements in Geometric Arrangements · IEEE Trans. Vis. Comput. Graph. 2016
Visualization and visual analytics › dimensionality reduction
multidimensional projection
0.212016
Dealing with Multiple Requirements in Geometric Arrangements · IEEE Trans. Vis. Comput. Graph. 2016

Methods — techniques the papers use, named apart from their topics

multidimensional projection · 0.2mixed-integer optimization · 0.2hierarchical representation · 0.2
YearPublicationVenuePosition
2022 Fine-grained legal entity annotation: A case study on the Brazilian Supreme Court
Fernando A. Correia, Alexandre A. A. de Almeida, José Luiz Nunes, Kaline G. Santos, Ivar A. Hartmann, Felipe A. Silva, Hélio Lopes 0001
Inf. Process. Manag.5
2020 A new framework for online content moderation
Ivar A. Hartmann
Comput. Law Secur. Rev.1
2016 Dealing with Multiple Requirements in Geometric Arrangements
abstract
Existing algorithms for building layouts from geometric primitives are typically designed to cope with requirements such as orthogonal alignment, overlap removal, optimal area usage, hierarchical organization, among others. However, most techniques are able to tackle just a few of those requirements simultaneously, impairing their use and flexibility. In this work we propose a novel methodology for building layouts from geometric primitives that concurrently addresses a wider range of requirements. Relying on multidimensional projection and mixed integer optimization, our approach arranges geometric objects in the visual space so as to generate well structured layouts that preserve the semantic relation among objects while still making an efficient use of display area. Moreover, scalability is handled through a hierarchical representation scheme combined with navigation tools. A comprehensive set of quantitative comparisons against existing geometry-based layouts and applications on text, image, and video data set visualization prove the effectiveness of our approach.
Erick Gomez Nieto, Wallace Casaca, Danilo Motta, Ivar A. Hartmann, Gabriel Taubin, Luis Gustavo Nonato
IEEE Trans. Vis. Comput. Graph.4