R. Alex Hofer — accepted AI-conference papers

2024

Stratified Prediction-Powered Inference for Effective Hybrid Evaluation of Language Models

Adam Fisch, Joshua Maynez, R. Alex Hofer, Bhuwan Dhingra, Amir Globerson, William W. Cohen

NeurIPS 2024poster

Prediction-powered inference (PPI) is a method that improves statistical estimates based on limited human-labeled data. PPI achieves this by combining small amounts of human-labeled data with larger amounts of data labeled by a reasonably accurate---but potentially biased---automatic system, in a w…

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2020

Scalable Neural Methods for Reasoning With a Symbolic Knowledge Base

William W. Cohen, Haitian Sun, R. Alex Hofer, Matthew Siegler

ICLR 2020poster

We describe a novel way of representing a symbolic knowledge base (KB) called a sparse-matrix reified KB. This representation enables neural modules that are fully differentiable, faithful to the original semantics of the KB, expressive enough to model multi-hop inferences, and scalable enough to u…

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