Search results for " change-points"

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Evaluating the performance of a new picking algorithm based on the variance piecewise constant models

2021

In this paper, a new picking algorithm for the automatic seismogram onset time determination is tested on a dataset of simulated waveforms. We aim at capturing the variations in the performance due to some characteristics of both the seismic event and its detection, which in turn affect some characteristics of the waveforms. We therefore simulate seismic events with different magnitude, and assumed to be detected with different distances from the nearest seismic station. Our tests permit to highlight the scenarios most suitable for our algorithm.

Earthquake Early Warning Picking Change-points EarthquakeSettore SECS-S/01 - Statistica
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Booms, Busts and normal times in the housing market

2015

We assess the existence of duration dependence in the likelihood of an end in housing booms, busts, and normal times. Using data for 20 industrial countries and a continuous-time Weibull duration model, we find evidence of positive duration dependence suggesting that housing market cycles have become longer over the last decades. Then, we extend the baseline Weibull model and allow for the presence of a change-point in the duration dependence parameter.We show that positive duration dependence is present in booms and busts that last less than 26 quarters, but that does not seem to be the case for longer phases of the housing market cycle. For normal times, no evidence of change-points is fo…

Statistics and ProbabilityEconomics and EconometricsHousing booms and bustsSocial SciencesDuration dependenceBoomWeibull modelEconomicsDuration (project management)Baseline (configuration management)Weibull distributionScience & TechnologyActuarial scienceCiências Sociais::Economia e Gestãohousing booms and busts duration analysis Weibull model duration dependence change-pointsSettore SECS-P/02 Politica EconomicaDuration analysis8. Economic growthChange pointsChange-pointsDemographic economics:Economia e Gestão [Ciências Sociais]Statistics Probability and UncertaintyDuration dependenceSocial Sciences (miscellaneous)
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