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DTSTART;TZID=America/New_York:20210202T113000
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UID:10001431-1612265400-1612269000@cmsa.fas.harvard.edu
SUMMARY:2/2/2021 Computer Science for Mathematicians
DESCRIPTION:
URL:https://cmsa.fas.harvard.edu/event/2-2-2021-computer-science-for-mathematicians/
CATEGORIES:Computer Science for Mathematicians Seminar
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210209T113000
DTEND;TZID=America/New_York:20210209T123000
DTSTAMP:20240126T091127Z
CREATED:20240126T091127Z
LAST-MODIFIED:20240126T091127Z
UID:10001429-1612870200-1612873800@cmsa.fas.harvard.edu
SUMMARY:2/9/2021 Computer Science for Math
DESCRIPTION:
URL:https://cmsa.fas.harvard.edu/event/2-9-2021-computer-science-for-math/
CATEGORIES:Computer Science for Mathematicians Seminar
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210216T133000
DTEND;TZID=America/New_York:20210216T143000
DTSTAMP:20240126T090101Z
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UID:10001424-1613482200-1613485800@cmsa.fas.harvard.edu
SUMMARY:2/16/2021 Computer Science for Mathematicians
DESCRIPTION:Speaker: Michael P. Kim (UC Berkeley) \nTitle: Outcome Indistinguishability \nAbstract: Prediction algorithms assign numbers to individuals that are popularly understood as individual “probabilities” — e.g.\, what is the probability of 5-year survival after cancer diagnosis? — and which increasingly form the basis for life-altering decisions. The understanding of individual probabilities in the context of such unrepeatable events has been the focus of intense study for decades within probability theory\, statistics\, and philosophy. Building off of notions developed in complexity theory and cryptography\, we introduce and study Outcome Indistinguishability (OI). OI predictors yield a model of probabilities that cannot be efficiently refuted on the basis of the real-life observations produced by Nature. \nWe investigate a hierarchy of OI definitions\, whose stringency increases with the degree to which distinguishers may access the predictor in question.  Our findings reveal that OI behaves qualitatively differently than previously studied notions of indistinguishability.  First\, we provide constructions at all levels of the hierarchy.  Then\, leveraging recently-developed machinery for proving average-case fine-grained hardness\, we obtain lower bounds on the complexity of the more stringent forms of OI.  The hardness result provides scientific grounds for the political argument that\, when inspecting algorithmic risk prediction instruments\, auditors should be granted oracle access to the algorithm\, not simply historical predictions. \nJoint work with Cynthia Dwork\, Omer Reingold\, Guy N. Rothblum\, Gal Yona; to appear at STOC 2021.
URL:https://cmsa.fas.harvard.edu/event/2-16-2021-computer-science-for-mathematicians/
LOCATION:Virtual
CATEGORIES:Computer Science for Mathematicians Seminar
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210224T113000
DTEND;TZID=America/New_York:20210224T123000
DTSTAMP:20240126T084225Z
CREATED:20240126T084225Z
LAST-MODIFIED:20240126T084225Z
UID:10001418-1614166200-1614169800@cmsa.fas.harvard.edu
SUMMARY:2/23/2021 Computer Science for Mathematicians
DESCRIPTION:
URL:https://cmsa.fas.harvard.edu/event/2-23-2021-computer-science-for-mathematicians/
LOCATION:Virtual
CATEGORIES:Computer Science for Mathematicians Seminar
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