Estimation and testing methods for causal inference with interference

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Abstract/Contents

Abstract
Causal inference is one of the core areas of research in modern data science that allows researchers to determine whether a specific intervention or treatment has an effect on an outcome. In its most basic form, causal inference is concerned with understanding the "cause and effect" relationship between variables. This requires going beyond correlation to understand whether changing one variable leads to a change in another. The gold standard for inferring causality is the randomized controlled trial, which randomly assigns subjects to a treatment or control group and compares outcomes. While randomized controlled trials provide us with data to do causal inference, the subsequent statistical analysis often relies on a key assumption known as the Stable Unit Treatment Value Assumption (SUTVA). This assumption states that the treatment of one unit (or individual) does not affect the outcome of another unit. However, in many real-world situations, this assumption does not hold, leading to what is called interference or a violation of SUTVA. Interference can occur in various contexts such as social networks, where the treatment of one person can influence the outcomes of others, or in marketplace, where treatment of one entity can impact other entities of same type. Understanding and handling interference is a critical and complex aspect of causal inference, and it necessitates more advanced methods to correctly estimate causal effects. This dissertation offers new methodologies and theoretical results to address key issues in causal inference with interference. Specifically, we develop inferential results for causal effect estimators in panel experiments under interference, introduce novel estimation methods for causal effects with network experiments and tackle the problem of detecting interference in online controlled experiments with increasing allocation.

Description

Type of resource text
Form electronic resource; remote; computer; online resource
Extent 1 online resource.
Place California
Place [Stanford, California]
Publisher [Stanford University]
Copyright date 2023; ©2023
Publication date 2023; 2023
Issuance monographic
Language English

Creators/Contributors

Author Han, Wu
Degree supervisor Imbens, Guido
Degree supervisor Ugander, Johan
Thesis advisor Imbens, Guido
Thesis advisor Ugander, Johan
Thesis advisor Owen, Art B
Degree committee member Owen, Art B
Associated with Stanford University, School of Humanities and Sciences
Associated with Stanford University, Department of Statistics

Subjects

Genre Theses
Genre Text

Bibliographic information

Statement of responsibility Kevin Han.
Note Submitted to the Department of Statistics.
Thesis Thesis Ph.D. Stanford University 2023.
Location https://purl.stanford.edu/yh822by5730

Access conditions

Copyright
© 2023 by Wu Han
License
This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).

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