Event Location and Vagueness

Event Location and Vagueness

Spatial Vagueness and Second-Order Vagueness

This paper presents a geometric characterization of geographic objects with vague boundaries. Since the framework is based on ordering geometry and does not rely on numerical concepts, it can be applied to qualitative spatial reasoning. The characterization describes vague regions and gradual transitions between two vague regions. This approach takes into account that the region of all points t...

A Generic Location Event Simulator

This note describes a standalone generic location event simulator that has been designed for the visualisation, scalability testing and evaluation of location-aware event-driven middleware and applications.

Automated microseismic event location using Master-Event Waveform Stacking

Accurate and automated locations of microseismic events are desirable for many seismological and industrial applications. The analysis of microseismicity is particularly challenging because of weak seismic signals with low signal-to-noise ratio. Traditional location approaches rely on automated picking, based on individual seismograms, and make no use of the coherency information between signal...

Higher-Order Vagueness and the Vagueness of ‘Vague’

Sorensen (1985) has argued that ‘vague’ is itself a vague predicate; it is just as sorites-prone as its positive instances. This result has been exploited by Hyde (1994) in an ingenious attempt to establish that vague predicates must necessarily suffer from higher-order vagueness. More precisely, Hyde has argued that the vagueness of ‘vague’ ensures that the “paradigmatic conception”, according...