Alexander J. Root
I am a Stanford CS PhD student advised by Fredrik Kjolstad,
currently working on sparse data reorganization.
I am generously supported by the NSF GFRP and a Stanford School of Engineering fellowship.
I did my undergrad and masters at MIT under Jonathan Ragan-Kelley
and Andrew Adams, where I worked on vector instruction selection,
fixed-point computation, and bounds inference. I also interned with Andrew, Shoaib Kamil,
and Maaz Bin Safeer Ahmad at Adobe Research in the summers of 2021 and 2022, on the same topics.
Part of my undergraduate work on fixed-point computation was advised by Frédo Durand.
Much of my research in undergrad and my masters was applied to the Halide compiler,
and I remain somewhat active in the language's development.
CV  / 
Google Scholar  / 
Twitter  / 
Github
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Research
I am generally interested in domain specific languages, compilers, and architectures, particularly for numerical methods.
Computational photography and computer graphics are two application areas that I am quite interested in.
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Teaching
Stanford
CS 343D: Domain-Specific Programming Models and Compilers, TA, Winter 2023
MIT
6.818: Dynamic Computer Language Engineering, TA, Fall 2021
6.006: Introduction to Algorithms, TA, Spring 2019 & Spring 2020
MEET (Global Teaching Labs), Computer Science Instructor, January 2019
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