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Insight provenance for spatiotemporal visual analytics : Theory, review, and guidelines / Andreas Hall in Journal of Spatial Information Science (JoSIS), n° 15 (September 2017)  

Public [article]  inJournal of Spatial Information Science (JoSIS) > n° 15 (September 2017) . - pp 65 - 88 Titre : Insight provenance for spatiotemporal visual analytics : Theory, review, and guidelines Type de document : Article/Communication Auteurs : Andreas Hall, Auteur ; Paula Ahonen-Rainio, Auteur ; Kirsi Virrantaus, Auteur Année de publication : 2017 Article en page(s) : pp 65 - 88 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse géovisuelle [Termes IGN] cadre conceptuel [Termes IGN] données spatiotemporelles [Termes IGN] orientations [Termes IGN] raisonnement spatial [Termes IGN] représentation mentale spatiale [Vedettes matières IGN] Géovisualisation Résumé : (Auteur) Research on provenance, which focuses on different ways to describe and record the history of changes and advances made throughout an analysis process, is an integral part of visual analytics. This paper focuses on providing the provenance of insight and rationale through visualizations while emphasizing, first, that this entails a profound understanding of human cognition and reasoning and that, second, the special nature of spatiotemporal data needs to be acknowledged in this process. A recently proposed human reasoning framework for spatiotemporal analysis, and four guidelines for the creation of visualizations that provide the provenance of insight and rationale published in relation to that framework, work as a starting point for this paper. While these guidelines are quite abstract, this paper set out to create a set of more concrete guidelines. On the basis of a review of available provenance solutions, this paper identifies a set of key features that are of relevance when providing the provenance of insight and rationale and, on the basis of these features, produces a new set of complementary guidelines that are more practically oriented than the original ones. Together, these two sets of guidelines provide both a theoretical and practical approach to the problem of providing the provenance of insight and rationale. Providing these kinds of guidelines represents a new approach in provenance research. Numéro de notice : A2017-822 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5311/JOSIS.2017.15.337 En ligne : https://doi.org/10.5311/JOSIS.2017.15.337 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89307 [article]

Comparison of temporally classified and unclassified map animations / Salla Multimäki in Cartographic perspectives, n° 82 (2015)  

Public [article]  inCartographic perspectives > n° 82 (2015) . - pp 5 - 14 Titre : Comparison of temporally classified and unclassified map animations Type de document : Article/Communication Auteurs : Salla Multimäki, Auteur ; Andreas Hall, Auteur ; Paula Ahonen-Rainio, Auteur Année de publication : 2015 Article en page(s) : pp 5 - 14 Note générale : biblographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse comparative [Termes IGN] cartographie animée [Termes IGN] classification [Termes IGN] données spatiotemporelles [Vedettes matières IGN] Géovisualisation Résumé : (auteur) While animation is a natural and, under certain circumstances, effective way to present spatio-temporal information, it has its limitations. Studying animations of large point datasets can be cognitively very demanding. Aiming to help users to comprehend such data, this study presents a new concept of temporal classification. A phenomenon is classified into periods of increasing, decreasing, and steady intensity, and each is assigned different colours in an animation. This concept was tested with a group of experts in the field of the phenomenon. The results suggest that this kind of classified animation, together with a traditional animation presenting the same dataset, supports users in their analysis process and adds to the impression they get of the phenomenon. It also seems that the viewing order of the animations matters: the full potential of the tested method is reached by viewing the traditional version first and temporally classified version after that. Numéro de notice : A2015--093 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article En ligne : http://dx.doi.org/10.14714/CP82.1296 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84966 [article]

Knowledge and reasoning in spatial analysis / Andreas Hall in Transactions in GIS, vol 18 n° 3 (June 2014)  

Public [article]  inTransactions in GIS > vol 18 n° 3 (June 2014) . - pp 464 - 476 Titre : Knowledge and reasoning in spatial analysis Type de document : Article/Communication Auteurs : Andreas Hall, Auteur ; Paula Ahonen-Rainio, Auteur ; Kirsi Virrantaus, Auteur Année de publication : 2014 Article en page(s) : pp 464 - 476 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale [Termes IGN] analyse spatiale [Termes IGN] analyse visuelle [Termes IGN] cognition [Termes IGN] graphe [Termes IGN] mobilité urbaine [Termes IGN] processus [Termes IGN] raisonnement spatial Résumé : (Auteur) Reasoning is an essential part of any analysis process. Especially in visual analytics, the quality of the results depends heavily on the knowledge and reasoning skills of the analyst. In this study, we consider how to make the results transparent by visualizing the reasoning and the knowledge, so that persons from outside can trace and verify them. The focus of this study is in spatial analysis and a case study was carried out on a process of off-road mobility analysis. In the case study, linked views of a map and a PCP were identified as reasoning artifacts. The knowledge used by the analyst was formed by these artifacts and the tangible pieces of information identified in them, along with the mental models of the analyst's mind. To make the results transparent, the tangible pieces of information were marked with sketches and the mental models were presented in causal graphs because it was found that causality was central to the reasoning process in the case study. The causal graph allows the reasoning of the analyst to be studied, as well as traced back to its origin. Numéro de notice : A2014-274 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12049 date de publication en ligne : 14/08/2013 En ligne : https://doi.org/10.1111/tgis.12049 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33177 [article]

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Clutter reduction methods for point symbols in map mashups / Jari Korpi in Cartographic journal (the), vol 50 n° 3 (August 2013)

Public [article]  inCartographic journal (the) > vol 50 n° 3 (August 2013) . - pp 257 - 265 Titre : Clutter reduction methods for point symbols in map mashups Type de document : Article/Communication Auteurs : Jari Korpi, Auteur ; Paula Ahonen-Rainio, Auteur Année de publication : 2013 Article en page(s) : pp 257 - 265 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] agrégation de détails [Termes IGN] application composite [Termes IGN] figuré ponctuel [Termes IGN] généralisation cartographique automatisée [Termes IGN] placement automatique des signes conventionnels [Termes IGN] réduction Résumé : (Auteur) Map mashups are often visually chaotic and methods for solving this chaos are required. We introduce a set of clutter reduction criteria for evaluating methods to reduce clutter in map mashups. We present a synthesis of cartographic generalisation operators for point data and clutter reduction methods used in information visualisation and evaluate the methods against the criteria. The resulting evaluation table can be used in finding suitable clutter reduction methods for cases of map mashups with different primary criteria, and more specifically in finding methods that cover each others’ limitations. Numéro de notice : A2013-465 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32603 [article]

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Deciding on fitness for use: evaluating the utility of sample maps as an element of geospatial metadata / Paula Ahonen-Rainio in Cartography and Geographic Information Science, vol 32 n° 2 (April 2005)

Public [article]  inCartography and Geographic Information Science > vol 32 n° 2 (April 2005) . - pp 101 - 112 Titre : Deciding on fitness for use: evaluating the utility of sample maps as an element of geospatial metadata Type de document : Article/Communication Auteurs : Paula Ahonen-Rainio, Auteur ; Menno-Jan Kraak, Auteur Année de publication : 2005 Article en page(s) : pp 101 - 112 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données [Termes IGN] carte échantillon [Termes IGN] évaluation des données [Termes IGN] information géographique [Termes IGN] métadonnées [Termes IGN] métadonnées géographiques [Termes IGN] outil d'aide à la décision [Termes IGN] santé [Termes IGN] visualisation Résumé : (Auteur) Metadata that describe characteristics of geographic datasets are used to discover potential datasets and evaluate their suitability for intended purposes. Here sample maps are suggested as tools for evaluating datasets. Their usefulness in this process was studied as part of a wider research on visualization of geospatial metadata. First, design concepts were tested with twelve subjects who commented different static presentations of sample maps and multivariate visualizations. Then a prototype of an interactive metadata environment composed of sample maps, textual metadata documents, and a parallel coordinate plot was tested with eighteen subjects whose task it was to select the most suitable dataset from among six alternatives each of which represented the same theme. The subjects determined suitalbilitv within a use scenario. The prototype proved to be a valuable tool in the evaluation process, especially because multiple maps could be compared. Numéro de notice : A2005-190 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27327 [article]

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