Sometimes these techniques helped, sometimes they hurt performance. It averaged to almost no effect. There was no clear way to predict in advance which technique would work when. Papers: https://
papers.ssrn.com/sol3/papers.cf
m?abstract_id=5165270
… https://
papers.ssrn.com/sol3/papers.cf
m?abstract_id=5285532
… https://
papers.ssrn.com/sol3/papers.cf
m?abstract_id=5375404
…

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