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Qingyao Sun

3 accepted papers

2024

QTIP: Quantization with Trellises and Incoherence Processing

NeurIPS 2024spotlight

Post-training quantization (PTQ) reduces the memory footprint of LLMs by quantizing weights to low-precision datatypes. Since LLM inference is usually memory-bound, PTQ methods can improve inference throughput. Recent state-of-the-art PTQ approaches use vector quantization (VQ) to quantize multiple…

2024

QuIP$\#$: Even Better LLM Quantization with Hadamard Incoherence and Lattice Codebooks

ICML 2024poster

Post-training quantization (PTQ) reduces the memory footprint of LLMs by quantizing their weights to low-precision. In this work, we introduce QuIP#, a weight-only PTQ method that achieves state-of-the-art results in extreme compression regimes ($\le$ 4 bits per weight) using three novel techniques.…

2023

Beyond Invariance: Test-Time Label-Shift Adaptation for Addressing "Spurious" Correlations

NeurIPS 2023poster

Changes in the data distribution at test time can have deleterious effects on the performance of predictive models $p(y|x)$. We consider situations where there are additional meta-data labels (such as group labels), denoted by $z$, that can account for such changes in the distribution. In particular…