The use of rough rules in the selection of topographic objects for generalizing geographical information

Anna Fiedukowicz

Abstract

AbstractSelection is a key element of the cartographic generalisation process, often being its first stage. On the other hand it is a component of other generalisation operators, such as simplification. One of the approaches used in generalization is the condition-action approach. The author uses a condition-action approach based on three types of rough logics (Rough Set Theory (RST), Dominance-Based Rough Set Theory (DRST) and Fuzzy-Rough Set Theory (FRST)), checking the possibility of their use in the process of selecting topographic objects (buildings, roads, rivers) and comparing the obtained results. The complexity of the decision system (the number of rules and their conditions) and its effectiveness are assessed, both in terms of quantity and quality – through visual assessment. The conducted research indicates the advantage of the DRST and RST approaches (with the CN2 algorithm) due to the quality of the obtained selection, the greater simplicity of the decision system, and better refined IT tools enabling the use of these systems. At this stage, the FRST approach, which is characterised by the highest complexity of created rules and the worst selection results, is not recommended. Particular approaches have limitations resulting from the need to select appropriate measurement scales for the attributes used in them. Special attention should be paid to the selection of network objects, in which the use of only a condition-action approach, without maintaining consistency of the network, may not produce the desired results. Unlike approaches based on classical logic, rough approaches allow the use of incomplete or contradictory information. The proposed tools can (in their current form) find an auxiliary use in the selection of topographic objects, and potentially also in other generalisation operators.
Author Anna Fiedukowicz (FGC / DC)
Anna Fiedukowicz,,
- Department of Cartography
Journal seriesPolish Cartographical Review, [Polski Przegląd Kartograficzny], ISSN 0324-8321, e-ISSN 2450-6966
Issue year2020
Vol52
No1
Pages5-19
Publication size in sheets0.7
Keywords in Englishcartographic generalization; Rough Set Theory; ominance-Based Rough Set Theory; Fuzzy-Rough Set Theory; decision rules
DOIDOI:10.2478/pcr-2020-0001
Internal identifier19/2020
Languageen angielski
Score (nominal)20
Score sourcejournalList
ScoreMinisterial score = 20.0, 01-07-2020, ArticleFromJournal
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