Don't miss the next session of the CTML Seminar Series on March 4th, where CTML GSR Alissa Gordon will discuss "Average Mixed Derivative: A Nonparametric Framework of Interactivity." This talk will take place from 12:00PM-1:00PM at Berkeley Way West, 5th Floor, Room 5401.
Abstract: There are many ways that multiple theoretically intervenable variables can synergize or antagonize to affect an outcome. We review several definitions of "interaction" and propose a new estimand called the average mixed derivative (AMD) that captures a scalar notion of interactivity within a nonparametric framework. We identify the AMD under standard causal assumptions and develop regression, weighting, and doubly-robust type estimators, focusing on continuous exposures and outcomes.