Analyzing Information Leakage of Updates to Natural Language Models
Analyzing Information Leakage of Updates to Natural Language Models
复制标题
分析自然语言模型更新的信息泄漏
DOI:
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发表时间:
2019
期刊:
影响因子:
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通讯作者:
Marc Brockschmidt
中科院分区:
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作者:
Santiago Zanella Béguelin;Lukas Wutschitz;Shruti Tople;Victor Rühle;Andrew J. Paverd;O. Ohrimenko;Boris Köpf;Marc Brockschmidt
To continuously improve quality and reflect changes in data, machine learning applications have to regularly retrain and update their core models. We show that a differential analysis of language model snapshots before and after an update can reveal a surprising amount of detailed information about changes in the training data. We propose two new metrics---differential score and differential rank---for analyzing the leakage due to updates of natural language models. We perform leakage analysis using these metrics across models trained on several different datasets using different methods and configurations. We discuss the privacy implications of our findings, propose mitigation strategies and evaluate their effect.