Results 21 to 30 of about 2,743 (120)
Flexible unimodal density estimation in hidden Markov models
Methods in Ecology and Evolution, EarlyView.Abstract Hidden Markov models (HMMs) are powerful tools for modelling time‐series data with underlying state structure. However, selecting appropriate parametric forms for the state‐dependent distributions is often challenging and can lead to model misspecification.
Jan‐Ole Fischer +5 more
wiley +1 more source
Why did Putin invade Ukraine? A theory of degenerate autocracy
American Journal of Political Science, EarlyView.Abstract Many dictatorships end up with a series of disastrous decisions such as Hitler's attack on the Soviet Union or Saddam Hussein's aggression against Kuwait. Even if a certain policy choice is not ultimately fatal for the regime, such as Mao's Big Leap Forward or the Pol Pot's collectivization drive, they typically involve both a miscalculation ...
Georgy Egorov, Konstantin Sonin
wiley +1 more source
Business Ethics, the Environment &Responsibility, EarlyView.ABSTRACT A common assumption is that firms become more socially responsible over time. Indeed, numerous conceptual papers focus on the issue of describing the CSR states that firms advance through. Yet, related empirical research remains limited and the assumption of steady progression across CSR states remains untested.
Christopher Groening +1 more
wiley +1 more source
British Journal of Educational Technology, EarlyView.Abstract As students learn and practice new skills in university courses, their behaviour can change in response to competing demands and increasing content complexity. However, most metrics used to evaluate study behaviour focus on the number or sequence of activities rather than on the change of behaviour.
Oleksandra Poquet +2 more
wiley +1 more source
Step2Motion: Locomotion Reconstruction from Pressure Sensing Insoles
Computer Graphics Forum, EarlyView.Abstract Human motion is fundamentally driven by continuous physical interaction with the environment. Whether walking, running, or simply standing, the forces exchanged between our feet and the ground provide crucial insights for understanding and reconstructing human movement. Recent advances in wearable insole devices offer a compelling solution for
J. L. Ponton +5 more
wiley +1 more source
MotionPyramid: Controllable Motion Synthesis via Stylized Phase Manifolds
Computer Graphics Forum, EarlyView.Abstract We introduce stylized phase manifolds—a compact, interpretable latent representation that disentangles motion content (e.g. “jumping”, “walking”), the temporal structure (e.g. motion cycle frequency, gait timing), and style (i.e. how the motion is performed). Learned in an unsupervised manner and inherently low‐dimensional, the manifold offers
Jingyuan Li +3 more
wiley +1 more source
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT Commercial laying hen breeding programs aim to maximize the performance of crossbred animals. However, selection is usually based on data from pure lines raised in controlled nucleus environments, which may not fully predict the yields under commercial conditions.
M. Sánchez‐Diaz +4 more
wiley +1 more source
The Evolution of Interest‐Rate Models: From the Yield Curve to the Swaption Cube
Journal of Economic Surveys, EarlyView.ABSTRACT Interest‐rate modelling is often taught as a catalogue of competing stochastic equations, obscuring why models were created and why modern sell‐side desks use several simultaneously. This survey reorganises the field around five layers of a pricing architecture: curve construction; arbitrage‐free dynamics; volatility‐smile representation ...
Xuan Feng +2 more
wiley +1 more source
Longevity, Health, and Housing Risk Management in Retirement
The Journal of Finance, EarlyView.ABSTRACT Annuities, long‐term care insurance, and reverse mortgages remain puzzlingly unpopular to manage post‐retirement longevity, health, and housing price risks. We use a flexible life‐cycle model structurally estimated with a unique stated‐preference survey experiment of Canadian households to understand why. Key factors include high risk aversion,
PIERRE‐CARL MICHAUD, PASCAL ST‐AMOUR
wiley +1 more source
A Unified Approach to Estimating Production Functions: Proxy Variables and Dynamic Panel Data
The Journal of Industrial Economics, EarlyView.ABSTRACT We propose a new approach to production function estimation that integrates the strengths of the proxy‐variable (PV) and dynamic panel data (DPD) methods. Our framework augments the set of instruments for the level equation in Blundell and Bond [8] with a Berkson‐type instrument motivated by economic theory, following Olley and Pakes [28 ...
Jose Miguel Abito +1 more
wiley +1 more source