Vaidehi Ulhas Dixit

College of Sciences

Works (5)

Updated: November 23rd, 2023 05:00

2023 journal article

A PRticle filter algorithm for nonparametric estimation of multivariate mixing distributions

STATISTICS AND COMPUTING, 33(4).

By: V. Dixit n & R. Martin n

author keywords: Importance sampling; Marked point process; Mixture model; Monte Carlo; Predictive recursion
TL;DR: A new strategy is proposed, which is referred to as PRticle filter, wherein the basic PR algorithm is augmented with a filtering mechanism that adaptively reweights an initial set of particles along the updating sequence which are used to obtain Monte Carlo approximations of the normalizing constants. (via Semantic Scholar)
Source: Web Of Science
Added: May 30, 2023

2023 journal article

Revisiting consistency of a recursive estimator of mixing distributions

ELECTRONIC JOURNAL OF STATISTICS, 17(1), 1007–1042.

By: V. Dixit n & R. Martin n

author keywords: Deconvolution; mixture model; monotone density estimation; predictive recursion; robustness
Source: Web Of Science
Added: November 20, 2023

2022 article

Estimating a Mixing Distribution on the Sphere Using Predictive Recursion

Dixit, V., & Martin, R. (2022, February 10). SANKHYA-SERIES B-APPLIED AND INTERDISCIPLINARY STATISTICS.

By: V. Dixit n & R. Martin n

author keywords: Directional data; EM algorithm; Marginal likelihood; Mixture model; Von Mises-Fisher distribution
TL;DR: Using the predictive recursion (PR) algorithm to solve for a mixture on a sphere, PR’s asymptotic consistency in spherical mixture models is established, and simulation results showcase its benefits compared to existing likelihood-based methods. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: February 28, 2022

2021 journal article

Evaluation of Pexion(R) (imepitoin) for treatment of storm anxiety in dogs: A randomised, double-blind, placebo-controlled trial

VETERINARY RECORD, 188(9).

By: I. Perdew n, C. Emke n, B. Johnson n, V. Dixit n, Y. Song n, E. Griffith n , P. Watson*, M. Gruen n 

MeSH headings : Animals; Anxiety / drug therapy; Dog Diseases / drug therapy; Dogs; Double-Blind Method; Female; Imidazoles / therapeutic use; Male; Treatment Outcome; Weather
TL;DR: Imepitoin was significantly superior to placebo in storm logs and weekly surveys for weeks 2 and 4, and in the end-of-study survey, and twice daily administration of imepitoin decreased anxiety scores in dogs with storm anxiety. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: January 22, 2021

2021 article

Multi-arm multi-stage clinical trials for time-to-event outcomes

Dixit, V., Mitra, P., & Simonsen, K. (2021, October 2). JOURNAL OF BIOPHARMACEUTICAL STATISTICS.

By: V. Dixit n, P. Mitra* & K. Simonsen*

author keywords: MAMS; FWER; PWER; generalized Dunnett; type I error
MeSH headings : Humans; Medical Futility; Research Design
TL;DR: This paper will focus on constructing the efficacy and futility boundaries for a MAMS clinical trial in two different scenarios and proposes modifications to the existing method that originally concentrated on controlling PWER and extend the method to include FWER in the design. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Source: Web Of Science
Added: October 12, 2021

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