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Nimit Sohoni

3 accepted papers

2020

Ivy: Instrumental Variable Synthesis for Causal Inference

AISTATS 2020poster

A popular way to estimate the causal effect of a variable x on y from observational data is to use an instrumental variable (IV): a third variable z that affects y only through x. The more strongly z is associated with x, the more reliable the estimate is, but such strong IVs are difficult to find.…

Cited by 34SourcePDFScholar
2020

Kaleidoscope: An Efficient, Learnable Representation For All Structured Linear Maps

ICLR 2020spotlight

Modern neural network architectures use structured linear transformations, such as low-rank matrices, sparse matrices, permutations, and the Fourier transform, to improve inference speed and reduce memory usage compared to general linear maps. However, choosing which of the myriad structured transfo…

Cited by 71SourceScholar
2020

No Subclass Left Behind: Fine-Grained Robustness in Coarse-Grained Classification Problems

NeurIPS 2020poster

In real-world classification tasks, each class often comprises multiple finer-grained "subclasses." As the subclass labels are frequently unavailable, models trained using only the coarser-grained class labels often exhibit highly variable performance across different subclasses. This phenomenon, kn…