Results 111 to 120 of about 9,580 (220)

Modelling and Estimating the Forward Price Curve in the Energy Market [PDF]

The stochastic or random nature of commodity prices plays a central role in models for valuing financial contingent claims on commodities. In this paper, by enhancing a multifactor framework which is consistent not only with the market observable forward
Les Clewlow, Boda Kang, Carl Chiarella
core  

Idiographic interrater reliability measures for intensive longitudinal multirater data

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Interrater reliability plays a crucial role in various areas of psychology. In this article, we propose a multilevel latent time series model for intensive longitudinal data with structurally different raters (e.g., self‐reports and partner reports).
Tobias Koch, Miriam F. Jaehne, Michaela Riediger, Antje Rauers, Jana Holtmann   +4 more
wiley   +1 more source

Bayesian inference for dynamic Q matrices and attribute trajectories in hidden Markov diagnostic classification models

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Hidden Markov diagnostic classification models capture how students' cognitive attributes evolve over time. This paper introduces a Bayesian Markov chain Monte Carlo algorithm for diagnostic classification models that jointly estimates time‐varying Q matrices, latent attributes, item parameters, attribute class proportions and transition ...
Chen‐Wei Liu
wiley   +1 more source

Time series segmentation with shifting means hidden markov models

, 2006
We present a new family of hidden Markov models and apply these to the segmentation of hydrological and environmental time series. The proposed hidden Markov models have a discrete state space and their structure is inspired from the shifting means ...
Fortin, V., Kehagias, Ath., Ath. Kehagias, V. Fortin   +3 more
core  

Population‐Based Identification of Clonal Hematopoiesis Using Peripheral Blood Whole‐Genome Sequencing in Japan

Cancer Science, EarlyView.
Whole‐genome sequencing of ~50,000 individuals from the Tohoku Medical Megabank (TMM) cohort defines the prevalence, mutational landscape, and age dependency of clonal hematopoiesis in the Japanese population, demonstrating overall concordance with clonal hematopoiesis detected in cancer patients.
SungGi Chi, Ikuko N. Motoike, Takao Fujisawa, Yumi Yamaguchi‐Kabata, Takahiro Nobukuni, Kengo Kinoshita, Yoshiaki Nakamura, Hideaki Bando, Takayuki Yoshino, Kinuko Ohneda, Katsuya Tsuchihara, Yosuke Minami, Riu Yamashita   +12 more
wiley   +1 more source

Hidden Markov Models and Their Mixtures

, 1996
Hidden Markov Models and Their Mixtures by Christophe Couvreur Diplome d"etudes approfondies en math'ematiques Facult'e des sciences -- D'epartement de math'ematiques, Universit'e catholique de Louvain Prof.
Prof Pierre Van Moerbeke, Prof Jean-marie Rolin, Christophe Couvreur, Prof Jean-marie Rolin (promoteur, Prof Jacques   +4 more
core  

Wildebeest movement responses to electric conservation fencing in the African Savannah ecosystem

Conservation Science and Practice, EarlyView.
These findings provide GPS‐based empirical evidence of how a newly constructed electric conservation fence alters migratory wildebeests, and show that effects are context‐dependent across habitat type, time of day, and distance to the boundary. While such fences can reduce human–wildlife conflict and support conservation goals, they must be carefully ...
Michael Honorati Kimaro, Kristen Denninger Snyder, Noel Latiaeli Mbise, Grant C. Hopcraft, Victor Alexander Kakengi, Han Olff   +5 more
wiley   +1 more source

The Staircase Chart: Visualising Vertical and Cross‐Shelf Movements and Dispersal of Early‐Life Fish, Applied to Japanese Jack Mackerel

Fisheries Oceanography, EarlyView.
ABSTRACT Dispersal during early life stages is a critical process shaping marine fish connectivity and population dynamics, yet direct field observations at the individual level remain elusive. This has limited our understanding of the factors controlling dispersal, including the impact of active swimming by larvae and juveniles. Here, we present a new
Tatsuya Sakamoto, Daichi Muto, Motomitsu Takahashi, Chiyuki Sassa, Toyoho Ishimura   +4 more
wiley   +1 more source

Medical Knowledge Integration Into Reinforcement Learning Algorithms for Dynamic Treatment Regimes

International Statistical Review, EarlyView.
Summary The goal of precision medicine is to provide individualised treatment at each stage of chronic diseases, a concept formalised by dynamic treatment regimes (DTR). These regimes adapt treatment strategies based on decision rules learned from clinical data to enhance therapeutic effectiveness.
Sophia Yazzourh, Nicolas Savy, Philippe Saint‐Pierre, Michael R. Kosorok   +3 more
wiley   +1 more source

An Overview and Recent Developments in the Analysis of Multistate Processes. [PDF]

Stat Med
Gorfine M, Cook RJ, Kragh Andersen P, Therneau TM, Joly P, Putter H, Pohar Perme M, Abrahamowicz M, Topic Group 8 “Survival Analysis” of the STRATOS Initiative.   +8 more
europepmc   +1 more source