social networks

Causal Inference over Stochastic Networks

Claiming causal inferences in network settings necessitates careful consideration of the often complex dependency between outcomes for actors. Of particular importance are treatment spillover or outcome interference effects. We consider causal …

Some New Models for Social Networks

This is the Keynote Address at the Australian Social Network Analysis Conference 2023. In it I discuss classes of exponential-family models that extend the range and realism of traditional classes.

Modeling of Networked Populations with Exponential-Family Random Network Models when data is Sampled or Missing

In this talk we discuss network modeling with a novel exponential-family class of models when the network in only partially observed.

Modeling of networked populations when data is sampled or missing

We discuss network modeling with a novel exponential-family class of models when the network has some stochastic covariates and is only partially observed.

A Simulation-Based Framework for Assessing the Feasibility of Respondent-Driven Sampling for Estimating Characteristics in Populations of Lesbian, Gay and Bisexual Older Adults

Respondent-driven sampling (RDS) is a method for sampling from a target population by leveraging social connections. RDS is invaluable to the study of hard-to-reach populations. However, RDS is costly and can be infeasible. RDS is infeasible when …

Local Dependence in Random Graph Models: Characterisation, Properties, and Statistical Inference

Dependent phenomena, such as relational, spatial and temporal phenomena, tend to be characterized by local dependence in the sense that units which are close in a well-defined sense are dependent. In contrast with spatial and temporal phenomena, …

Network Model-Assisted Inference from Respondent-Driven Sampling Data

Respondent-driven sampling is a widely used method for sampling hard-to-reach human populations by link tracing over their social networks. Inference from such data requires specialized techniques because the sampling process is both partially beyond …

Estimating the Size of Populations at High Risk for HIV using Respondent-Driven Sampling Data

The study of hard-to-reach populations presents significant challenges. Typically, a sampling frame is not available, and population members are difficult to identify or recruit from broader sampling frames. This is especially true of populations at …

Estimating Hidden Population Size using Respondent-Driven Sampling Data

Respondent-Driven Sampling (RDS) is n approach to sampling design and inference in hard-to-reach human populations. It is often used in situations where the target population is rare and/or stigmatized in the larger population, so that it is …

A Separable Model for Dynamic Networks

Models of dynamic networks—networks that evolve over time—have manifold applications. We develop a discrete time generative model for social network evolution that inherits the richness and flexibility of the class of exponential family random-graph …