Asymptotic theory and inference of predictive mean matching imputation using a superpopulation model framework

The Psychological Science Accelerator’s (PSA) primary project tested for latent structure using exploratory factor analysis and confirmatory factor analysis but we decided to diverge from this approach and model individual traits separately. Our interest mainly was in examining the interplay between “stimulus ethnicity” and “stimulus sex” to discover how differing levels of these criterion differ across region, country, lab etc. While the necessary and prerequisite hierarchical structural information about each trait could certainly be found within the primary project’s dataset, we did not assume that any specific factor structure from the PSA’s primary analysis would necessarily hold, therefore we based our decision to model the data from each trait separately using a mixed model framework.

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The Asymptotic Theory of the Kakwani Class of Poverty Measures

SSRN Electronic Journal ◽

10.2139/ssrn.1004392 ◽

2007 ◽

Author(s):

Gane Samb Lo ◽

Serigne Touba Sall ◽

Cheikh Tidiane Seck

Keyword(s):

Asymptotic Theory ◽

Poverty Measures

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Asymptotic Theory for Renewal Based High-Frequency Volatility Estimation

SSRN Electronic Journal ◽

10.2139/ssrn.3123062 ◽

2018 ◽

Author(s):

Yifan Li ◽

Ingmar Nolte ◽

Sandra Nolte (Lechner)

Keyword(s):

High Frequency ◽

Asymptotic Theory ◽

Volatility Estimation

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Impact of Chatbot in Transforming the Face of Retailing- An Empirical Model of Antecedents and Outcomes

Recent Patents on Computer Science ◽

10.2174/2213275912666190809110804 ◽

2019 ◽

Vol 12 ◽

Author(s):

Kumari Anshu ◽

Loveleen Gaur ◽

Arun Solanki

Keyword(s):

Research Work ◽

Shopping Behavior ◽

Model Framework ◽

Shopping Experience ◽

The Face ◽

Strongly Agree ◽

Different Characteristics ◽

Work Done ◽

The Impact ◽

Self Administered Questionnaire

Chatbot has emerged as a significant resolution to the swiftly growing customer caredemands in recent times. Chatbot has emerged as one of the biggest technological disruption. Simply speaking, it is a software agent facilitating interaction between computers and humans in natural language. So basically, it is a simulated, intellectual dialogue agent functional in a range of consumer engagement circumstances. It is the easiest and simplest means enable interaction between the retailers and the customers. • Purpose- Most of the research work done in this field is concerned with their technical aspects. The recent research on chatbot pay little attention to the impact it is creating on users’ experience. Through this work, author is making an effort to know the customer-oriented impact that the chatbot bear on the shoppers. The purpose of this study is to develop and empirically test a framework that identify the customer oriented attributes of chatbot and impact of these attributes on customers. • Objectives- The study intends to bridge the gap between concepts and actual attributes and applications on the subject of Chatbot. The following research objectives can address the various aspects of Chatbot affecting the different characteristics of consumers shopping behaviors: a) Identify the various attributes of chatbot that bears an impression on consumer shopping behavior. b) Evaluate the impact of chatbot on consumer shopping behavior that leads to the development of chatbot usage and adoption among the customer. • Design/Methodology/Approach – For the purpose of analysis, author has administered Factor analysis and Multiple regression using SPSS version 23 for identification of various attributes of Chatbot and knowing their impact on shoppers. A self-administered questionnaire from the review of literature is developed. Industry experts in the field of retailing and academician evaluate the questionnaire. Primary information from the respondents is gathered using this questionnaire. The questionnaire comprises of Likert scale on a scale of 1 to 5 where 1 stands for strongly disagree and 5 stands for strongly agree. Data is collected from 126 respondents, out of which 111 respondents were finally considered for study and analysis purpose. • Findings – The empirical results show that the study identifies various attributes of chatbot like Trust, Usefulness, Satisfaction, Readiness to Use and Accessibility. It is also found that chatbot is really influencing the customers in providing them with shopping experience, which can be very helpful to the businesses for increasing the sales and creating repurchase intention among the customers. • Originality/value – The recent research on chatbot pay little attention to the impact it is creating on customers who are actually interacting with it on regular basis. The research paper extends information for understanding and appreciating the customer oriented attributes of artificially intelligent Chatbot. In this regard, the author has developed a model framework and proposed the attributes identified. Through the work, author is also making an effort to test empirically the impact of the identified attributes on the shoppers.

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Standard Asymptotic Theory

10.1093/oso/9780198505044.003.0003 ◽

2017 ◽

Author(s):

Russell Cheng

Keyword(s):

Asymptotic Theory ◽

Asymptotic Variance ◽

Statistical Significance ◽

Regularity Conditions ◽

Parameter Estimates ◽

Asymptotic Results ◽

Ml Estimation ◽

True Parameter ◽

Log Likelihood ◽

Ml Estimator

This book relies on maximum likelihood (ML) estimation of parameters. Asymptotic theory assumes regularity conditions hold when the ML estimator is consistent. Typically an additional third derivative condition is assumed to ensure that the ML estimator is also asymptotically normally distributed. Standard asymptotic results that then hold are summarized in this chapter; for example, the asymptotic variance of the ML estimator is then given by the Fisher information formula, and the log-likelihood ratio, the Wald and the score statistics for testing the statistical significance of parameter estimates are all asymptotically equivalent. Also, the useful profile log-likelihood then behaves exactly as a standard log-likelihood only in a parameter space of just one dimension. Further, the model can be reparametrized to make it locally orthogonal in the neighbourhood of the true parameter value. The large exponential family of models is briefly reviewed where a unified set of regular conditions can be obtained.

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Did Attitudes Interpret and Predict “Better” Choice Behaviour towards Innovative and Greener Automotive Technologies? A Hybrid Choice Modelling Approach

Journal of Advanced Transportation ◽

10.1155/2020/5135026 ◽

2020 ◽

Vol 2020 ◽

pp. 1-22

Author(s):

Stefano de Luca ◽

Roberta Di Pace

Keyword(s):

Latent Variables ◽

Psychological Factors ◽

Choice Model ◽

Combustion Engine ◽

Innovative Technology ◽

Choice Modelling ◽

Choice Behaviour ◽

Model Framework ◽

Main Research ◽

Automotive Technology

It is common opinion that traditional approaches used to interpret and model users’ choice behaviour in innovative contexts may lead to neglecting numerous nonquantitative factors that may affect users’ perceptions and behaviours. Indeed, psychological factors, such as attitudes, concerns, and perceptions may play a significant role which should be explicitly modelled. By contrast, collecting psychological factors could be a time and cost consuming activity, and furthermore, real-world applications must rely on theoretical paradigms which are able to easily predict choice/market fractions. The present paper aims to investigate the above-mentioned issues with respect to an innovative automotive technology based on the after-market hybridization of internal combustion engine vehicles. In particular, three main research questions are addressed: (i) whether and how users’ characteristics and attitudes may affect users’ behaviour with respect to new technological (automotive) scenarios (e.g., after-market hybridization kit); (ii) how to better “grasp” users’ attitudes/concerns/perceptions and, in particular, which is the most effective surveying approach to observe users’ attitudes; (iii) to what extent the probability of choosing a new automotive technology is sensitive to attitudes/concerns changes. The choice to install/not install the innovative technology was modelled through a hybrid choice model with latent variables (HCMs), starting from a stated preferences survey in which attitudes were investigated using different types of questioning approaches: direct questioning, indirect questioning, or both approaches. Finally, a comparison with a traditional binomial logit model and a sensitivity analysis was carried out with respect to the instrumental attributes and the attitudes. Obtained results indicate that attitudes are significant in interpreting and predicting users’ behaviour towards the investigated technology and the HCM makes it possible to easily embed psychological factors into a random utility model/framework. Moreover, the explicit simulation of the attitudes allows for a better prediction of users’ choice with respect to the Logit formulation and points out that users’ behaviour may be significantly affected by acting on users’ attitudes.

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Lessons from the Experience of U.N. Convention on the Rights of Persons with Disabilities: Addressing the Democratic Deficit in Global Health Governance

The Journal of Law Medicine & Ethics ◽

10.1111/j.1748-720x.2010.00512.x ◽

2010 ◽

Vol 38 (3) ◽

pp. 564-579 ◽

Cited By ~ 17

Author(s):

Janet E. Lord ◽

David Suozzi ◽

Allyn L. Taylor

Keyword(s):

Global Health ◽

Social Protection ◽

Medical Model ◽

Social Model ◽

Model Framework ◽

Persons With Disabilities ◽

Social Model Of Disability ◽

Socially Constructed ◽

High Commissioner ◽

Traditional Approaches

The United Nations Convention on the Rights of Persons with Disabilities (the CRPD or the Convention), adopted on December 13, 2006, and entered into force on May 3, 2008, constitutes a key landmark in the emerging field of global health law and a critical milestone in the development of international law on the rights of persons with disabilities. At the time of its adoption, the U.N. High Commissioner for Human Rights heralded the CRPD as a rejection of the understanding of persons with disabilities “as objects of charity, medical treatment and social protection” and an embrace of disabled people as “subjects of rights.”The text of the Convention itself, and the highly participatory process by which it was negotiated, signal a definitive break from previous international approaches that focused on disability within a medical model framework. In contrast to traditional approaches, the CRPD embraces a social model of disability, concentrating the disability experience not in individual deficiency, but in the socially constructed environment and the barriers that impede the participation of persons with disabilities in society.

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