Xiaoyue Niu
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View article: Moderating Effects of Park Accessibility and External Environment on Park Satisfaction in a Mountainous City
Moderating Effects of Park Accessibility and External Environment on Park Satisfaction in a Mountainous City Open
Urban parks play a vital role in enhancing residents’ well-being, making it essential for decision-makers and designers to understand the factors influencing park satisfaction to improve park attributes. While existing studies primarily fo…
View article: Comparing the Robustness of Simple Network Scale-Up Method Estimators
Comparing the Robustness of Simple Network Scale-Up Method Estimators Open
The network scale-up method (NSUM) is a cost-effective approach to estimating the size or prevalence of a group of people that is hard to reach through a standard survey. The basic NSUM involves two steps: estimating respondents’ degrees a…
View article: In-Human Assessment of Radio Frequency Induced Heating for Implants during MRI
In-Human Assessment of Radio Frequency Induced Heating for Implants during MRI Open
Radio frequency induced heating of medical implants during magnetic resonance imaging (MRI) poses a serious threat to patient safety, and in vivo assessment of heating permits individualized on-site safety assessment. Based on the proton r…
View article: Dynamic models augmented by hierarchical data: an application of estimating HIV epidemics at sub-national level
Dynamic models augmented by hierarchical data: an application of estimating HIV epidemics at sub-national level Open
Summary Dynamic models have been successfully used in producing estimates of HIV epidemics at the national level due to their epidemiological nature and their ability to estimate prevalence, incidence, and mortality rates simultaneously. R…
View article: Dynamic Models Augmented by Hierarchical Data: An Application Of Estimating HIV Epidemics At Sub-National And Sub-Population Level
Dynamic Models Augmented by Hierarchical Data: An Application Of Estimating HIV Epidemics At Sub-National And Sub-Population Level Open
Dynamic models have been successfully used in producing estimates of HIV epidemics at the national level due to their epidemiological nature and their ability to estimate prevalence, incidence, and mortality rates simultaneously. Recently,…
View article: A dynamic additive and multiplicative effects network model with application to the United Nations voting behaviors
A dynamic additive and multiplicative effects network model with application to the United Nations voting behaviors Open
Motivated by a study of United Nations voting behaviors, we introduce a regression model for a series of networks that are correlated over time. Our model is a dynamic extension of the additive and multiplicative effects network model (AME…
View article: Estimating and Correcting Degree Ratio Bias in the Network Scale-up Method
Estimating and Correcting Degree Ratio Bias in the Network Scale-up Method Open
The Network Scale-up Method (NSUM) uses social networks and answers to "How many X's do you know?" questions to estimate sizes of groups excluded by standard surveys. This paper addresses the bias caused by varying average social network s…
View article: Xiaoyue Niu's contribution to the Discussion of ‘Vintage Factor Analysis with Varimax Performs Statistical Inference’ by Rohe & Zeng
Xiaoyue Niu's contribution to the Discussion of ‘Vintage Factor Analysis with Varimax Performs Statistical Inference’ by Rohe & Zeng Open
I want to congratulate Rohe and Zeng on solving a long-time puzzle (and fight between statisticians and practitioners) of "why/whether the varimax rotation works".Their inspiring results have some implications in the literature of latent s…
View article: Comparing the Robustness of Simple Network Scale-Up Method (NSUM) Estimators
Comparing the Robustness of Simple Network Scale-Up Method (NSUM) Estimators Open
The network scale-up method (NSUM) is a cost-effective approach to estimating the size or prevalence of a group of people that is hard to reach through a standard survey. The basic NSUM involves two steps: estimating respondents' degrees b…
View article: Variable Selection for High-Dimensional Nodal Attributes in Social Networks with Degree Heterogeneity
Variable Selection for High-Dimensional Nodal Attributes in Social Networks with Degree Heterogeneity Open
We consider a class of network models, in which the connection probability depends on ultrahigh-dimensional nodal covariates (homophily) and node-specific popularity (degree heterogeneity). A Bayesian method is proposed to se…
View article: A Correlated Network Scale-Up Model: Finding the Connection Between Subpopulations
A Correlated Network Scale-Up Model: Finding the Connection Between Subpopulations Open
Aggregated relational data (ARD), formed from "How many X's do you know?" questions, is a powerful tool for learning important network characteristics with incomplete network data. Compared to traditional survey methods, ARD is attractive …
View article: Mapping the number of female sex workers in countries across sub-Saharan Africa
Mapping the number of female sex workers in countries across sub-Saharan Africa Open
Female sex workers (FSW) are affected by individual, network, and structural risks, making them vulnerable to poor health and well-being. HIV prevention strategies and local community-based programs can rely on estimates of the number of F…
View article: A Correlated Network Scale-up Model: Finding the Connection Between Subpopulations
A Correlated Network Scale-up Model: Finding the Connection Between Subpopulations Open
Aggregated relational data (ARD), formed from “How many X’s do you know?” questions, is a powerful tool for learning important network characteristics with incomplete network data. Compared to traditional survey methods, ARD is attractive …
View article: Mapping the number of female sex workers in countries across sub-Saharan Africa
Mapping the number of female sex workers in countries across sub-Saharan Africa Open
Female sex workers (FSW) are affected by individual, network, and structural risks, making them vulnerable to poor health and well-being. HIV prevention strategies and local community-based programs can rely on estimates of the number of F…
View article: Grouped Network Poisson Autoregressive Model
Grouped Network Poisson Autoregressive Model Open
Multivariate Poisson autoregressive models are common ways to fit count time series data, while the statistical inference is quite challenging.The network Poisson autoregressive model (NPAR) reduces the inference complexity by incorporatin…
View article: Consistent Spectral Clustering of Network Block Models under Local Differential Privacy
Consistent Spectral Clustering of Network Block Models under Local Differential Privacy Open
The stochastic block model (SBM) and degree-corrected block model (DCBM) are network models often selected as the fundamental setting in which to analyze the theoretical properties of community detection methods. We consider the problem of…
View article: What we can learn from the exported cases in detecting disease outbreaks – a case study of the COVID-19 epidemic
What we can learn from the exported cases in detecting disease outbreaks – a case study of the COVID-19 epidemic Open
View article: A Bayesian hierarchical model for combining multiple data sources in population size estimation
A Bayesian hierarchical model for combining multiple data sources in population size estimation Open
To combat the HIV/AIDS pandemic effectively, targeted interventions among certain key populations play a critical role. Examples of such key populations include sex workers, people who inject drugs, and men who have sex with men. While hav…
View article: Perfect Spectral Clustering with Discrete Covariates
Perfect Spectral Clustering with Discrete Covariates Open
Among community detection methods, spectral clustering enjoys two desirable properties: computational efficiency and theoretical guarantees of consistency. Most studies of spectral clustering consider only the edges of a network as input t…
View article: A Correlated Network Scale-up Model: Finding the Connection Between Subpopulations
A Correlated Network Scale-up Model: Finding the Connection Between Subpopulations Open
Aggregated relational data (ARD), formed from "How many X's do you know?" questions, is a powerful tool for learning important network characteristics with incomplete network data. Compared to traditional survey methods, ARD is attractive …
View article: Modeling the Marked Presence-Only Data: A Case Study of Estimating the Female Sex Worker Size in Malawi
Modeling the Marked Presence-Only Data: A Case Study of Estimating the Female Sex Worker Size in Malawi Open
Certain subpopulations like female sex workers (FSW), men who have sex with men (MSM), and people who inject drugs (PWID) often have higher prevalence of HIV/AIDS and are difficult to map directly due to stigma, discrimination, and crimina…
View article: Consistent Spectral Clustering of Network Block Models under Local Differential Privacy
Consistent Spectral Clustering of Network Block Models under Local Differential Privacy Open
The stochastic block model (SBM) and degree-corrected block model (DCBM) are network models often selected as the fundamental setting in which to analyze the theoretical properties of community detection methods. We consider the problem of…
View article: Consistency of Privacy-Preserving Spectral Clustering under the Stochastic Block Model.
Consistency of Privacy-Preserving Spectral Clustering under the Stochastic Block Model. Open
The stochastic block model (SBM) -- a network model featuring community structure -- is often selected as the fundamental setting in which to analyze the theoretical properties of community detection methods. We consider the problem of pri…
View article: Estimating the Value of Statistical Life in China: A Contingent Valuation Study in Six Representative Cities
Estimating the Value of Statistical Life in China: A Contingent Valuation Study in Six Representative Cities Open
Incorporating the health impacts into all kinds of policy decisions has become the shared expectations of policymakers and the public, hoping to obtain the most significant health benefits with the least policy costs. The value of statisti…
View article: Modeling the Marked Presence-Only Data: A Case Study of Estimating the Female Sex Worker Size in Malawi
Modeling the Marked Presence-Only Data: A Case Study of Estimating the Female Sex Worker Size in Malawi Open
Certain subpopulations like female sex workers (FSW), men who have sex with men (MSM), and people who inject drugs (PWID) often have higher prevalence of HIV/AIDS and are difficult to map directly due to stigma, discrimination, and crim…
View article: Thirty Years of The Network Scale-up Method
Thirty Years of The Network Scale-up Method Open
Estimating the size of hard-to-reach populations is an important problem for many fields. The network scale-up method (NSUM) is a relatively new approach to estimate the size of these hard-to-reach populations by asking respondents the que…
View article: Mapping the Population Size of Female Sex Worker in Countries Across Sub-Saharan Africa
Mapping the Population Size of Female Sex Worker in Countries Across Sub-Saharan Africa Open
View article: Modeling the Marked Presence-only Data: A Case Study of Estimating the Female Sex Worker Size in Malawi
Modeling the Marked Presence-only Data: A Case Study of Estimating the Female Sex Worker Size in Malawi Open
Certain subpopulations like female sex workers (FSW), men who have sex with men (MSM), and people who inject drugs (PWID) often have higher prevalence of HIV/AIDS and are difficult to map directly due to stigma, discrimination, and crimina…
View article: Using factor analyses to estimate the number of female sex workers across Malawi from multiple regional sources
Using factor analyses to estimate the number of female sex workers across Malawi from multiple regional sources Open
Purpose: Human immunodeficiency virus (HIV) risks are heterogeneous in nature even in generalized epidemics. However, data are often missing for those at highest risk of HIV, including female sex workers. Statistical models may be used to …
View article: Using factor analyses to estimate the number of female sex workers across Malawi from multiple regional sources
Using factor analyses to estimate the number of female sex workers across Malawi from multiple regional sources Open