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Is federated-xgboost secure during quantile sketching? #27

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vollis opened this issue Apr 25, 2022 · 0 comments
Open

Is federated-xgboost secure during quantile sketching? #27

vollis opened this issue Apr 25, 2022 · 0 comments

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@vollis
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vollis commented Apr 25, 2022

In quantile sketching, each worker computes the quantile summaries on local data, and the summaries are then merged to get the global one. How do you ensure the security during the merging? I think the summaries could cause privacy leakage.
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