Results 61 to 70 of about 594 (117)

The Impact of the Coronavirus Pandemic Crisis on Inflation and Interest Rate Policy in Poland

open access: yesPrace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu, 2022
The aim of the article was to investigate the impact of the crisis caused by the coronavirus pandemic on the course of inflation and interest rate policy in Poland.
Tomasz Grabia
doaj  

The Role of Inflation-Indexed Bond in Optimal Management of Defined Contribution Pension Plan During the Decumulation Phase

open access: yesRisks, 2018
This paper investigates the optimal investment strategy for a defined contribution (DC) pension plan during the decumulation phase which is risk-averse and pays close attention to inflation risk.
Xiaoyi Zhang, Junyi Guo
doaj   +1 more source

Introducing COZIGAM: An R Package for Unconstrained and Constrained Zero-Inflated Generalized Additive Model Analysis

open access: yesJournal of Statistical Software, 2010
Zero-inflation problem is very common in ecological studies as well as other areas. Nonparametric regression with zero-inflated data may be studied via the zero-inflated generalized additive model (ZIGAM), which assumes that the zero-inflated responses ...
Hai Liu, Kung-Sik Chan
doaj  

Random Forest Adaptation for High-Dimensional Count Regression

open access: yesMathematics
The analysis of high-dimensional count data presents a unique set of challenges, including overdispersion, zero-inflation, and complex nonlinear relationships that traditional generalized linear models and standard machine learning approaches often fail ...
Oyebayo Ridwan Olaniran   +4 more
doaj   +1 more source

Bayesian Neural Networks with Regularization for Sparse Zero-Inflated Data Modeling

open access: yesInformation
Zero inflation is pervasive across text mining, event log, and sensor analytics, and it often degrades the predictive performance of analytical models. Classical approaches, most notably the zero-inflated Poisson (ZIP) and zero-inflated negative binomial
Sunghae Jun
doaj   +1 more source

The importance of zeros in digital soil mapping I: a review

open access: yesGeoderma
The presence and influence of excess zeros has been understudied and inconsistently applied within the digital soil mapping (DSM) field. Other disciplines have identified the challenges associated with fitting empirical models when the data are highly ...
Travis Pennell   +3 more
doaj   +1 more source

A Positive Inflated Discrete Distribution: Properties and Applications

open access: yesStatistica
We consider data modelling under one inflation for zero-truncated count data, as they typically arise in capture-recapture modelling. One-inflation in zero-truncated count data has recently found considerable attention. In this regard, zero-truncated New
Bilal Ahmad Peer, Zehra Skinder
doaj   +1 more source

ISCAZIM: Integrated statistical correlation analysis for zero-inflated microbiome data

open access: yesHeliyon
Microbiome-metabolome association analysis is critical to reveal the key pairs of gut microbiota and metabolites for discovery of the microbial biomarkers in chronic diseases.
Zhe Fan   +5 more
doaj   +1 more source

Bipolar vs. unipolar scaling in dynamic network analyses of Ecological Momentary Assessment data.

open access: yesPLoS ONE
This study examined the statistical and clinical benefits of using bipolar versus unipolar scaling in dynamic network analysis of Ecological Momentary Assessment (EMA) data.MethodsForty-seven students completed EMA reports three times daily for five ...
Arwin Nemani   +7 more
doaj   +1 more source

Zero-inflation in the MPLN Family

open access: yes
Les données de comptage en haute dimension sont difficiles à analyser telles quelles, et les approches basées sur des modèles statistiques restent efficaces et appropriées tout en préservant l'interprétabilité. Le modèle Poisson-Log-Normal (PLN) (multivarié) en est un exemple et suppose que les données de comptage sont influencées par une variable ...
Batardière, Bastien   +3 more
openaire   +1 more source

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