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Chris DuBois

3 accepted papers

2022

Combining Compressions for Multiplicative Size Scaling on Natural Language Tasks

COLING 2022main

Quantization, knowledge distillation, and magnitude pruning are among the most popular methods for neural network compression in NLP. Independently, these methods reduce model size and can accelerate inference, but their relative benefit and combinatorial interactions have not been rigorously studie…

2021

Entity-Based Knowledge Conflicts in Question Answering

EMNLP 2021main

Knowledge-dependent tasks typically use two sources of knowledge: parametric, learned at training time, and contextual, given as a passage at inference time. To understand how models use these sources together, we formalize the problem of knowledge conflicts, where the contextual information contrad…

2021

On the Transferability of Minimal Prediction Preserving Inputs in Question Answering

NAACL 2021long

Recent work (Feng et al., 2018) establishes the presence of short, uninterpretable input fragments that yield high confidence and accuracy in neural models. We refer to these as Minimal Prediction Preserving Inputs (MPPIs). In the context of question answering, we investigate competing hypotheses fo…