Qualitative reasoning with directional relations

AbstractQualitative spatial reasoning (QSR) pursues a symbolic approach to reasoning about a spatial domain. Qualitative calculi are defined to capture domain properties in relation operations, granting a relation algebraic approach to reasoning. QSR has two primary goals: providing a symbolic model for human common-sense level of reasoning and providing efficient means for reasoning. In this paper, we dismantle the hope for efficient reasoning about directional information in infinite spatial domains by showing that it is inherently hard to decide consistency of a set of constraints that represents positions in the plane by specifying directions from reference objects. We assume that these reference objects are not fixed but only constrained through directional relations themselves. Known QSR reasoning methods fail to handle this information

Unnamed locations, underspecified regions, and other linguistic phenomena in geographic annotation of water-based locations

This short paper investigates how locations in or close to water masses in topics and documents (e.g. rivers, seas, oceans) are referred to. For this study, 13 topics from the GeoCLEF topics 2005-2008 aiming at documents on rivers, oceans, or sea names were selected and the corresponding relevant documents retrieved and manually annotated. Results of the geographic annotation indicate that i) topics aiming at locations close to water contain a wide variety of spatial relations (indicated by dierent prepositions), ii) unnamed locations can be generated on-the-fly by referring to movable objects (e.g. ships, planes) travelling along a path, iii) underspecied regions are referenced by proximity or distance or directional relations. In addition, several generic expressions (e.g. "in international waters") are frequently used, but refer to different underspecified regions

Building a Bond: Longitudinal Relations between Interpersonal School Climate, Student Awareness and Reporting of Violence, and Peer Victimization and Aggression in Adolescents

High prevalence rates and negative outcomes of peer-based aggression and victimization during early adolescence underscore the need to identify causes and consequences of these outcomes. Limited research has examined the impact of environmental and contextual factors, such as school climate, on peer aggression and victimization. Few studies have addressed relations between school climate and specific subtypes of physical and relational aggression and victimization. Although school climate has been assessed via interpersonal subsystems (i.e., student-student and student-teacher relationships), little research has incorporated the role of student awareness and reporting of violence and safety concerns. Further, studies are needed that consider the bi-directional relations between school climate and peer aggression and victimization over time. To address these limitations, the current longitudinal study examined associations between school climate (i.e., student-student and student-teacher relationships and awareness/reporting) and peer aggression and victimization over six months among a sample of 265 middle school students

A splitting line model for directional relations

Directional relations are fundamental to spatial data queries, analysis and reasoning. Consequently there has been a significant amount of effort to determine directional relations between two regions. However, many existing methods do not perform well when the regions are neighboring or intertwined. In this paper we introduce a new model for directional relations which is based on a splitting line separating the two regions in question. We identify essential quality criteria for directional relation models and translate them into measurable properties of a given splitting line. We present an efficient algorithm that computes an optimal splitting line for two regions and perform extensive experiments. Our results show that the splitting line model captures directional relations very well and that it clearly outperforms existing approaches on pairs of neighboring or intertwined regions

A semantic and language-based representation of an environmental scene

The modeling of a landscape environment is a cognitive activity that requires appropriate spatial representations. The research presented in this paper introduces a structural and semantic categorization of a landscape view based on panoramic photographs that act as a substitute of a given natural environment. Verbal descriptions of a landscape scene provide themodeling input of our approach. This structure-based model identifies the spatial, relational, and semantic constructs that emerge from these descriptions. Concepts in the environment are qualified according to a semantic classification, their proximity and direction to the observer, and the spatial relations that qualify them. The resulting model is represented in a way that constitutes a modeling support for the study of environmental scenes, and a contribution for further research oriented to the mapping of a verbal description onto a geographical information system-based representation

Comorbid sleep problems and dysregulation profile from childhood to adolescence – longitudinal course, concurrent development and reciprocal relationship

The present cumulative dissertation examined a clinically relevant topic, namely difficulties of sleep and self-regulation from early childhood to adolescence about their longitudinal association, concurrence and reciprocal relationships. Results provided evidence for stable and heterogeneous developmental patterns for both contents, strong mutual associations with concurrent symptoms and longitudinal bi-directional relations, dominated in impact by the dysregulation-driven paths.2019-05-2

Comorbid sleep problems and dysregulation profile from childhood to adolescence – longitudinal course, concurrent development and reciprocal relationship

The present cumulative dissertation examined a clinically relevant topic, namely difficulties of sleep and self-regulation from early childhood to adolescence about their longitudinal association, concurrence and reciprocal relationships. Results provided evidence for stable and heterogeneous developmental patterns for both contents, strong mutual associations with concurrent symptoms and longitudinal bi-directional relations, dominated in impact by the dysregulation-driven paths.2019-05-2

Locational relations in Yagua narrative

From the introduction: In this paper I will attempt to show that locational relations are specified by rhetorical predicates in the same way as the other relations mentioned above are. I suggest that the paucity of locational and directional relations in lists of rhetorical predicates in previous work is due to the absence of specific morphosyntactic devises for indicating such relations in the languages that most linguists speak