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Chang Liu

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Book Open access Aug 2026

DAGPipe: Differentiable DAG Learning for Automated Data Preparation

DAGPipe is proposed, a novel framework that jointly learns both the topology and parameters of data preparation pipelines in a fully differentiable manner and attains the best average rank among state-of-the-art preprocessing methods and exceeds the average baseline on every dataset.

Jing Chang, Chang Liu · 0 citations
Book Open access Jul 2026

PrepRet: Automated Data Preparation Pipeline Selection for Neural Retrieval

PreRet, a framework that jointly optimizes preprocessing pipeline selection and neural retrieval through differentiable optimization through differentiable optimization, is proposed, enabling end-to-end gradient-based learning over a search space of 700 configurations spanning text cleaning, pre-tokenization, chunking,...

Jing Chang, Chang Liu · 0 citations

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