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Documents authored by Timpf, Sabine

Document
Complete Volume
DOI: 10.4230/LIPIcs.COSIT.2026
LIPIcs, Volume 393, COSIT 2026, Complete Volume

Authors: Sabine Timpf, Gabriele Filomena, Armand Kapaj, Rui Zhu, Nicholas A. Giudice, and Ed Manley

Published in: LIPIcs, Volume 393, 17th International Conference on Spatial Information Theory (COSIT 2026)

Abstract
LIPIcs, Volume 393, COSIT 2026, Complete Volume
Cite as

17th International Conference on Spatial Information Theory (COSIT 2026). Leibniz International Proceedings in Informatics (LIPIcs), Volume 393, pp. 1-498, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2026)

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@Proceedings{timpf_et_al:LIPIcs.COSIT.2026,
  title =	{{LIPIcs, Volume 393, COSIT 2026, Complete Volume}},
  booktitle =	{17th International Conference on Spatial Information Theory (COSIT 2026)},
  pages =	{1--498},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-438-3},
  ISSN =	{1868-8969},
  year =	{2026},
  volume =	{393},
  editor =	{Timpf, Sabine and Filomena, Gabriele and Kapaj, Armand and Zhu, Rui and Giudice, Nicholas A. and Manley, Ed},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.COSIT.2026},
  URN =		{urn:nbn:de:0030-drops-278484},
  doi =		{10.4230/LIPIcs.COSIT.2026},
  annote =	{Keywords: LIPIcs, Volume 393, COSIT 2026, Complete Volume}
}
Document
Front Matter
DOI: 10.4230/LIPIcs.COSIT.2026.0
Front Matter, Table of Contents, Preface, Conference Organization

Authors: Sabine Timpf, Gabriele Filomena, Armand Kapaj, Rui Zhu, Nicholas A. Giudice, and Ed Manley

Published in: LIPIcs, Volume 393, 17th International Conference on Spatial Information Theory (COSIT 2026)

Abstract
Front Matter, Table of Contents, Preface, Conference Organization
Cite as

17th International Conference on Spatial Information Theory (COSIT 2026). Leibniz International Proceedings in Informatics (LIPIcs), Volume 393, pp. 0:i-0:xiv, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2026)

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@InProceedings{timpf_et_al:LIPIcs.COSIT.2026.0,
  author =	{Timpf, Sabine and Filomena, Gabriele and Kapaj, Armand and Zhu, Rui and Giudice, Nicholas A. and Manley, Ed},
  title =	{{Front Matter, Table of Contents, Preface, Conference Organization}},
  booktitle =	{17th International Conference on Spatial Information Theory (COSIT 2026)},
  pages =	{0:i--0:xiv},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-438-3},
  ISSN =	{1868-8969},
  year =	{2026},
  volume =	{393},
  editor =	{Timpf, Sabine and Filomena, Gabriele and Kapaj, Armand and Zhu, Rui and Giudice, Nicholas A. and Manley, Ed},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.COSIT.2026.0},
  URN =		{urn:nbn:de:0030-drops-278462},
  doi =		{10.4230/LIPIcs.COSIT.2026.0},
  annote =	{Keywords: Front Matter, Table of Contents, Preface, Conference Organization}
}
Document
Short Paper
DOI: 10.4230/LIPIcs.COSIT.2026.19
Structuring the Underwater Environment: A Taxonomy of Aquatic Landmarks (Short Paper)

Authors: Eva Nuhn and Sabine Timpf

Published in: LIPIcs, Volume 393, 17th International Conference on Spatial Information Theory (COSIT 2026)

Abstract
Effective navigation in aquatic environments relies on the perception and use of environmental cues, or landmarks, that provide spatial orientation and facilitate wayfinding. While much research has focused on terrestrial and urban landmarks, comparatively little is known about underwater landmarks and how divers perceive and use them. Thirty-eight participants completed an online survey and provided information on the use and perception of underwater landmarks. Rock formations and caves, seabed features, and wrecks are the most frequently selected underwater landmarks, with no significant differences observed between recreational and professional divers or among different experience levels. Based on the results of the survey, we develop a data-driven taxonomy of aquatic landmarks comprising three top-level classes: Natural Landmarks, Artificial Landmarks, and Environmental Conditions. The taxonomy provides a structured framework for understanding underwater spatial orientation and serves as a foundation for future research, cognitive mapping studies, and the development of navigational aids in aquatic settings.
Cite as

Eva Nuhn and Sabine Timpf. Structuring the Underwater Environment: A Taxonomy of Aquatic Landmarks (Short Paper). In 17th International Conference on Spatial Information Theory (COSIT 2026). Leibniz International Proceedings in Informatics (LIPIcs), Volume 393, pp. 19:1-19:8, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2026)

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@InProceedings{nuhn_et_al:LIPIcs.COSIT.2026.19,
  author =	{Nuhn, Eva and Timpf, Sabine},
  title =	{{Structuring the Underwater Environment: A Taxonomy of Aquatic Landmarks}},
  booktitle =	{17th International Conference on Spatial Information Theory (COSIT 2026)},
  pages =	{19:1--19:8},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-438-3},
  ISSN =	{1868-8969},
  year =	{2026},
  volume =	{393},
  editor =	{Timpf, Sabine and Filomena, Gabriele and Kapaj, Armand and Zhu, Rui and Giudice, Nicholas A. and Manley, Ed},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.COSIT.2026.19},
  URN =		{urn:nbn:de:0030-drops-275635},
  doi =		{10.4230/LIPIcs.COSIT.2026.19},
  annote =	{Keywords: Aquatic navigation, Underwater landmarks, Spatial orientation, Landmark taxonomy, Diver perception}
}
Document
Short Paper
DOI: 10.4230/LIPIcs.COSIT.2026.27
Representing Retail Wayfinding: A Requirement-Driven Study Design for Non-Visual Supermarket Navigation (Short Paper)

Authors: Xiang Zhou and Sabine Timpf

Published in: LIPIcs, Volume 393, 17th International Conference on Spatial Information Theory (COSIT 2026)

Abstract
First-visit supermarket shopping is a demanding case of non-visual indoor wayfinding. Blind and low-vision shoppers must make sense of functional zones, work through repetitive aisles, and confirm shelf areas while also dealing with queues and checkout. We use retail wayfinding to describe how movement, in-store search, and shelf-level confirmation are coupled. Retailer-held 2D layouts and product placement data can support verbal guidance, but many dynamic, sensory, and social conditions remain outside these data. We outline a requirement-driven mixed-methods study with 52 blind and low-vision participants: 30 in Study A, 30 in Study B, with eight participants taking part in both. Audio-recorded dialogue, verbal route descriptions, observer-coded event traces, and post-task interviews will be used to examine how shoppers request spatial information, confirm progress, and manage uncertainty from store-level orientation to shelf-level confirmation. The expected output is an initial coding matrix showing what needs to be represented, at what scale, and when confirmation or assistance becomes necessary in non-visual retail wayfinding.
Cite as

Xiang Zhou and Sabine Timpf. Representing Retail Wayfinding: A Requirement-Driven Study Design for Non-Visual Supermarket Navigation (Short Paper). In 17th International Conference on Spatial Information Theory (COSIT 2026). Leibniz International Proceedings in Informatics (LIPIcs), Volume 393, pp. 27:1-27:7, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2026)

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@InProceedings{zhou_et_al:LIPIcs.COSIT.2026.27,
  author =	{Zhou, Xiang and Timpf, Sabine},
  title =	{{Representing Retail Wayfinding: A Requirement-Driven Study Design for Non-Visual Supermarket Navigation}},
  booktitle =	{17th International Conference on Spatial Information Theory (COSIT 2026)},
  pages =	{27:1--27:7},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-438-3},
  ISSN =	{1868-8969},
  year =	{2026},
  volume =	{393},
  editor =	{Timpf, Sabine and Filomena, Gabriele and Kapaj, Armand and Zhu, Rui and Giudice, Nicholas A. and Manley, Ed},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.COSIT.2026.27},
  URN =		{urn:nbn:de:0030-drops-275718},
  doi =		{10.4230/LIPIcs.COSIT.2026.27},
  annote =	{Keywords: retail wayfinding, blind and low-vision shoppers, indoor wayfinding, verbal route descriptions, requirements modelling}
}
Document
Short Paper
DOI: 10.4230/LIPIcs.COSIT.2026.36
From Sequential Decisions to Concurrent Processes: Advancing Human Navigation Models for Simulation (Short Paper)

Authors: Sabine Timpf and Franziska Klügl

Published in: LIPIcs, Volume 393, 17th International Conference on Spatial Information Theory (COSIT 2026)

Abstract
Computational models of human navigation have largely followed sequential decision paradigms, treating planning, perception, and movement as discrete models. In contrast, evidence from spatial cognition and neuroscience indicates that navigation arises from multiple interacting processes operating concurrently. Building on a previously proposed architecture, this paper advances a modelling framework that explicitly represents such concurrency and process interaction, and examines its implications for agent-based simulations of spatial decision-making in human navigation.
Cite as

Sabine Timpf and Franziska Klügl. From Sequential Decisions to Concurrent Processes: Advancing Human Navigation Models for Simulation (Short Paper). In 17th International Conference on Spatial Information Theory (COSIT 2026). Leibniz International Proceedings in Informatics (LIPIcs), Volume 393, pp. 36:1-36:8, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2026)

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@InProceedings{timpf_et_al:LIPIcs.COSIT.2026.36,
  author =	{Timpf, Sabine and Kl\"{u}gl, Franziska},
  title =	{{From Sequential Decisions to Concurrent Processes: Advancing Human Navigation Models for Simulation}},
  booktitle =	{17th International Conference on Spatial Information Theory (COSIT 2026)},
  pages =	{36:1--36:8},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-438-3},
  ISSN =	{1868-8969},
  year =	{2026},
  volume =	{393},
  editor =	{Timpf, Sabine and Filomena, Gabriele and Kapaj, Armand and Zhu, Rui and Giudice, Nicholas A. and Manley, Ed},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.COSIT.2026.36},
  URN =		{urn:nbn:de:0030-drops-275805},
  doi =		{10.4230/LIPIcs.COSIT.2026.36},
  annote =	{Keywords: agent-based simulation, modelling human navigation, computational process modelling}
}
Document
Short Paper
DOI: 10.4230/LIPIcs.GIScience.2023.72
Modelling Affordances as Emergent Phenomena (Short Paper)

Authors: Sabine Timpf and Franziska Klügl

Published in: LIPIcs, Volume 277, 12th International Conference on Geographic Information Science (GIScience 2023)

Abstract
Affordances are an important basis for many human-environment interactions such as navigation or geo-design. In this short paper we present an approach to modelling affordances based on treating affordances as emergent phenomena in an agent-based simulation. We use the notion of an affordance schema to represent the setting in which the emergence of an affordance is made possible. We use a case study to show that (unexpected) affordances emerge during the course of the simulation. While the general approach is promising and may be used for other emergent phenomena such as landmarks, we also acknowledge and discuss the problems incurred during the modelling process. The paper closes with a reflection and some ideas for future work.
Cite as

Sabine Timpf and Franziska Klügl. Modelling Affordances as Emergent Phenomena (Short Paper). In 12th International Conference on Geographic Information Science (GIScience 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 277, pp. 72:1-72:6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@InProceedings{timpf_et_al:LIPIcs.GIScience.2023.72,
  author =	{Timpf, Sabine and Kl\"{u}gl, Franziska},
  title =	{{Modelling Affordances as Emergent Phenomena}},
  booktitle =	{12th International Conference on Geographic Information Science (GIScience 2023)},
  pages =	{72:1--72:6},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-288-4},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{277},
  editor =	{Beecham, Roger and Long, Jed A. and Smith, Dianna and Zhao, Qunshan and Wise, Sarah},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.GIScience.2023.72},
  URN =		{urn:nbn:de:0030-drops-189672},
  doi =		{10.4230/LIPIcs.GIScience.2023.72},
  annote =	{Keywords: agent-based modelling, cognitive engineering, spatial cognition, theory of modelling}
}
Document
Complete Volume
DOI: 10.4230/LIPIcs.COSIT.2019
LIPIcs, Volume 142, COSIT'19, Complete Volume

Authors: Sabine Timpf, Christoph Schlieder, Markus Kattenbeck, Bernd Ludwig, and Kathleen Stewart

Published in: LIPIcs, Volume 142, 14th International Conference on Spatial Information Theory (COSIT 2019)

Abstract
LIPIcs, Volume 142, COSIT'19, Complete Volume
Cite as

14th International Conference on Spatial Information Theory (COSIT 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 142, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@Proceedings{timpf_et_al:LIPIcs.COSIT.2019,
  title =	{{LIPIcs, Volume 142, COSIT'19, Complete Volume}},
  booktitle =	{14th International Conference on Spatial Information Theory (COSIT 2019)},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-115-3},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{142},
  editor =	{Timpf, Sabine and Schlieder, Christoph and Kattenbeck, Markus and Ludwig, Bernd and Stewart, Kathleen},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.COSIT.2019},
  URN =		{urn:nbn:de:0030-drops-112984},
  doi =		{10.4230/LIPIcs.COSIT.2019},
  annote =	{Keywords: Information systems, Geographic information systems, Location based services,Computing methodologies, Natural language processing}
}
Document
Front Matter
DOI: 10.4230/LIPIcs.COSIT.2019.0
Front Matter, Table of Contents, Preface, Conference Organization

Authors: Sabine Timpf, Christoph Schlieder, Markus Kattenbeck, Bernd Ludwig, and Kathleen Stewart

Published in: LIPIcs, Volume 142, 14th International Conference on Spatial Information Theory (COSIT 2019)

Abstract
Front Matter, Table of Contents, Preface, Conference Organization
Cite as

14th International Conference on Spatial Information Theory (COSIT 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 142, pp. 0:i-0:xx, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@InProceedings{timpf_et_al:LIPIcs.COSIT.2019.0,
  author =	{Timpf, Sabine and Schlieder, Christoph and Kattenbeck, Markus and Ludwig, Bernd and Stewart, Kathleen},
  title =	{{Front Matter, Table of Contents, Preface, Conference Organization}},
  booktitle =	{14th International Conference on Spatial Information Theory (COSIT 2019)},
  pages =	{0:i--0:xx},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-115-3},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{142},
  editor =	{Timpf, Sabine and Schlieder, Christoph and Kattenbeck, Markus and Ludwig, Bernd and Stewart, Kathleen},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.COSIT.2019.0},
  URN =		{urn:nbn:de:0030-drops-110921},
  doi =		{10.4230/LIPIcs.COSIT.2019.0},
  annote =	{Keywords: Front Matter, Table of Contents, Preface, Conference Organization}
}
Document
DOI: 10.4230/LIPIcs.GISCIENCE.2018.7
Is Salience Robust? A Heterogeneity Analysis of Survey Ratings

Authors: Markus Kattenbeck, Eva Nuhn, and Sabine Timpf

Published in: LIPIcs, Volume 114, 10th International Conference on Geographic Information Science (GIScience 2018)

Abstract
Differing weights for salience subdimensions (e.g. visual or structural salience) have been suggested since the early days of salience models in GIScience. Up until now, however, it remains unclear whether weights found in studies are robust across environments, objects and observers. In this study we examine the robustness of a survey-based salience model. Based on ratings of N_{o}=720 objects by N_{p}=250 different participants collected in-situ in two different European cities (Regensburg and Augsburg) we conduct a heterogeneity analysis taking into account environment and sense of direction stratified by gender. We find, first, empirical evidence that our model is invariant across environments, i.e. the strength of the relationships between the subdimensions of salience does not differ significantly. The structural model coefficients found can, hence, be used to calculate values for overall salience across different environments. Second, we provide empirical evidence that invariance of our measurement model is partly not given with respect to both, gender and sense of direction. These compositional invariance problems are a strong indicator for personal aspects playing an important role.
Cite as

Markus Kattenbeck, Eva Nuhn, and Sabine Timpf. Is Salience Robust? A Heterogeneity Analysis of Survey Ratings. In 10th International Conference on Geographic Information Science (GIScience 2018). Leibniz International Proceedings in Informatics (LIPIcs), Volume 114, pp. 7:1-7:16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@InProceedings{kattenbeck_et_al:LIPIcs.GISCIENCE.2018.7,
  author =	{Kattenbeck, Markus and Nuhn, Eva and Timpf, Sabine},
  title =	{{Is Salience Robust? A Heterogeneity Analysis of Survey Ratings}},
  booktitle =	{10th International Conference on Geographic Information Science (GIScience 2018)},
  pages =	{7:1--7:16},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-083-5},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{114},
  editor =	{Winter, Stephan and Griffin, Amy and Sester, Monika},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.GISCIENCE.2018.7},
  URN =		{urn:nbn:de:0030-drops-93353},
  doi =		{10.4230/LIPIcs.GISCIENCE.2018.7},
  annote =	{Keywords: Salience Model, Measurement Invariance, Heterogeneity Analysis, PLS Path Modeling, Structural Equation Models}
}
Document
DOI: 10.4230/DagRep.6.2.119
Computational Challenges in Cooperative Intelligent Urban Transport (Dagstuhl Seminar 16091)

Authors: Caitlin Doyle Cottrill, Jan Fabian Ehmke, Frankziska Klügl, and Sabine Timpf

Published in: Dagstuhl Reports, Volume 6, Issue 2 (2016)

Abstract
This report documents the talks and group work of Dagstuhl Seminar 16091 "Computational Challenges in Cooperative Intelligent Urban Transport". This interdisciplinary seminar brought researchers together from many fields including computer science, transportation, operations research, mathematics, machine learning and artificial intelligence. The seminar included two formats of talks: several minute research statements and longer overview talks. The talks given are documented here with abstracts. Furthermore, this seminar consisted of significant amounts of group work that is also documented with short abstracts detailing group discussions and planned outcomes.
Cite as

Caitlin Doyle Cottrill, Jan Fabian Ehmke, Frankziska Klügl, and Sabine Timpf. Computational Challenges in Cooperative Intelligent Urban Transport (Dagstuhl Seminar 16091). In Dagstuhl Reports, Volume 6, Issue 2, pp. 119-146, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016)

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@Article{doylecottrill_et_al:DagRep.6.2.119,
  author =	{Doyle Cottrill, Caitlin and Ehmke, Jan Fabian and Kl\"{u}gl, Frankziska and Timpf, Sabine},
  title =	{{Computational Challenges in Cooperative Intelligent Urban Transport (Dagstuhl Seminar 16091)}},
  pages =	{119--146},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2016},
  volume =	{6},
  number =	{2},
  editor =	{Doyle Cottrill, Caitlin and Ehmke, Jan Fabian and Kl\"{u}gl, Frankziska and Timpf, Sabine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.6.2.119},
  URN =		{urn:nbn:de:0030-drops-58913},
  doi =		{10.4230/DagRep.6.2.119},
  annote =	{Keywords: collaborative transport, Computational transportation science, Cooperative computing, Crowd-sourcing of transportation data, Intelligent transportation systems}
}

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