I'm a second year PhD student at the University of Pennsylvania in the Computer and Information Science department. I am grateful to be advised by Professor Danaë Metaxa as a member of Penn HCI. My work is supported by an AWS gift for research in Trustworthy AI.

Broadly my interests are in human-computer interaction, applied machine learning and computational social science with a current focus on algorithm auditing. Prior to Penn I worked in industry as a software engineer at Apple and Sisu Data. I studied Computer Science (MS) and Symbolic Systems (BS) at Stanford University.

Email: stephtw [at] seas.upenn.edu

News

• 11/24 I will be attending CSCW to present our work, "Lower Quantity, Higher Quality Auditing News Content and User Perceptions on Twitter/X Algorithmic versus Chronological Timelines".

• 08/24 My paper with Shengchun Huang won First Place Faculty Paper, Political Communication Division at Association for Education in Journalism and Mass Communication (AEJMC)!

• 07/24 I went to IC2S2 to present work on auditing social media news feeds.

• 06/24 Presented at ICA, "Biases in Health-Related Targeted Online Advertisements".

Research