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PRODID:-//IFDS - ECPv6.0.1.1//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://ifds.info
X-WR-CALDESC:Events for IFDS
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Los_Angeles
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20210314T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20211107T090000
END:STANDARD
TZID:America/Chicago
BEGIN:DAYLIGHT
TZOFFSETFROM:-0600
TZOFFSETTO:-0500
TZNAME:CDT
DTSTART:20210314T080000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0500
TZOFFSETTO:-0600
TZNAME:CST
DTSTART:20211107T070000
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END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210115T133000
DTEND;TZID=America/Los_Angeles:20210115T143000
DTSTAMP:20260407T032915
CREATED:20210115T201953Z
LAST-MODIFIED:20210115T205423Z
UID:882-1610717400-1610721000@ifds.info
SUMMARY:ML-Opt @ U Washington: Yue Yu
DESCRIPTION:Title: Proportional-integral projected gradient method for model predictive control \nAbstract: \n 
URL:https://ifds.info/event/ml-opt-u-washington-yue-yu/
LOCATION:WI
CATEGORIES:MLOpt@UWash
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210122T133000
DTEND;TZID=America/Los_Angeles:20210122T143000
DTSTAMP:20260407T032915
CREATED:20210115T202625Z
LAST-MODIFIED:20210115T202625Z
UID:886-1611322200-1611325800@ifds.info
SUMMARY:ML-Opt @ UWash: Lang Liu
DESCRIPTION:Title: \nAbstract:
URL:https://ifds.info/event/ml-opt-uwash-lang-liu/
LOCATION:WI
CATEGORIES:MLOpt@UWash
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210125T133000
DTEND;TZID=America/Chicago:20210125T143000
DTSTAMP:20260407T032915
CREATED:20210114T194544Z
LAST-MODIFIED:20210115T190559Z
UID:810-1611581400-1611585000@ifds.info
SUMMARY:IFDS Ideas Forum: Xuexhou Zhang
DESCRIPTION:Title: Statistical Robustness in Reinforcement Learning \nAbstract: \nXuezhou Zhang (Computer Sciences)\, advised by Jerry Zhu (Computer Sciences) and Kevin Jamieson (U of Washington)\, works on adaptivity and robustness in sequential decision making. His recent work focuses on designing reinforcement learning framework that learns from a diverse source of teaching signals and learns robustly in the presence of data corruptions.
URL:https://ifds.info/event/ifds-ideas-forum-xuezhou-zhang/
LOCATION:Webex
CATEGORIES:IFDS Ideas Forum
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210129T133000
DTEND;TZID=America/Chicago:20210129T143000
DTSTAMP:20260407T032915
CREATED:20210115T202824Z
LAST-MODIFIED:20210115T202824Z
UID:888-1611927000-1611930600@ifds.info
SUMMARY:ML-Opt @ UWash: Ronak Mehta
DESCRIPTION:Title: \nAbstract: \n 
URL:https://ifds.info/event/ml-opt-uwash-ronak-mehta/
LOCATION:WI
CATEGORIES:MLOpt@UWash
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210203T123000
DTEND;TZID=America/Chicago:20210203T133000
DTSTAMP:20260407T032915
CREATED:20210202T162925Z
LAST-MODIFIED:20210202T185248Z
UID:930-1612355400-1612359000@ifds.info
SUMMARY:SILO: Yao Xie
DESCRIPTION:Statistical inference on spatio-temporal networks \nUNTIL FURTHER NOTICE: Seminars are virtual. Sign up for the SILO email list to receive the links to each talk at https://groups.google.com/ and browse for silo
URL:https://ifds.info/event/statistical-inference-on-spatio-temporal-networks/
LOCATION:WI
CATEGORIES:SILO
ORGANIZER;CN="Rob%20Nowak":MAILTO:rdnowak@wisc.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210205T133000
DTEND;TZID=America/Los_Angeles:20210205T143000
DTSTAMP:20260407T032915
CREATED:20210115T155014Z
LAST-MODIFIED:20210205T134755Z
UID:845-1612531800-1612535400@ifds.info
SUMMARY:IFDS All-Hands: Zaid Harchaoui
DESCRIPTION:Zaid Harchaoui\, Associate Professor\, Statistics \nTitle: On statistical estimation\, signal denoising\, and convex optimization \nAbstract: We revisit the classical statistical problem of adaptive discrete-time signal denoising. Conventional nonparametric statistics and signal processing approaches rely on strong structural assumptions on the signal set. The approach we present\, inspired by the seminal works from Ibragimov-Khasminskii and later Donoho\, takes a different view and focuses instead on statistical estimators amenable to convex optimization. We show that such estimators possess better statistical properties than conventional ones. In particular\, under an assumption of approximate shift-invariance\, the proposed estimators enjoy l2-loss oracle inequalities. We show how to implement them using optimal first-order methods and highlight interesting statistical-computational trade-offs. Joint work with D. Ostrovskii\, A. Juditsky\, A. Nemirovski.  \n 
URL:https://ifds.info/event/ifds-all-hands-zaid-harchaoui/
LOCATION:WI
CATEGORIES:Monthly All-Hands
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210208T133000
DTEND;TZID=America/Chicago:20210208T143000
DTSTAMP:20260407T032915
CREATED:20210202T184959Z
LAST-MODIFIED:20210211T152659Z
UID:945-1612791000-1612794600@ifds.info
SUMMARY:IFDS Ideas Forum: Miaoyan Wang
DESCRIPTION:PERSON: Miaoyan Wang \nTITLE: Beyond the Signs: Nonparametric Tensor Completion via Sign Series \nABSTRACT: \nBIO:  I am an assistant professor in the Department of Statistics at the University of Wisconsin-Madison since late 2018. I am also an affiliate of the Institute for Foundations of Data Science (IFDS) at Wisconsin Institute for Discovery (WID). My research is in statistical machine learning with a particular focus on matrix/tensor data analysis. Other interests include statistical applications in genetics and neuroimaging. \nPrior to UW-Madision\, I was a postdoc in Computer Science (EECS Department) at UC Berkeley and a Simons Math+X postdoc at University of Pennsylvania. I received my PhD in Statistics from the University of Chicago and BS in Mathematics from Fudan University.
URL:https://ifds.info/event/ifds-ideas-forum-02082021/
LOCATION:WI
CATEGORIES:IFDS Ideas Forum
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210210T123000
DTEND;TZID=America/Chicago:20210210T133000
DTSTAMP:20260407T032915
CREATED:20210202T162926Z
LAST-MODIFIED:20210202T190411Z
UID:931-1612960200-1612963800@ifds.info
SUMMARY:SILO: Hamed Hasani
DESCRIPTION:Two Facets of Learning Robust Models: Fundamental Limits and \nUNTIL FURTHER NOTICE: Seminars are virtual. Sign up for the SILO email list to receive the links to each talk at https://groups.google.com/ and browse for silo
URL:https://ifds.info/event/two-facets-of-learning-robust-models-fundamental-limits-and/
LOCATION:WI
CATEGORIES:SILO
ORGANIZER;CN="Rob%20Nowak":MAILTO:rdnowak@wisc.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210212T133000
DTEND;TZID=America/Chicago:20210212T143000
DTSTAMP:20260407T032915
CREATED:20210115T202956Z
LAST-MODIFIED:20210212T002315Z
UID:890-1613136600-1613140200@ifds.info
SUMMARY:ML-Opt @ UWash: Postponed-TBD
DESCRIPTION:This talk will be rescheduled for a later date.\nTitle: Convergence of the empirical superquantile for risk-sensitive machine learning \nAbstract:  I’ll present some background in risk-sensitive learning + Theorem 2.1 of  this paper (using ML nomenclature) \n 
URL:https://ifds.info/event/ml-opt-uwash-krishna-pillutla/
LOCATION:WI
CATEGORIES:MLOpt@UWash
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210215T133000
DTEND;TZID=America/Chicago:20210215T143000
DTSTAMP:20260407T032915
CREATED:20210202T185758Z
LAST-MODIFIED:20210219T192622Z
UID:952-1613395800-1613399400@ifds.info
SUMMARY:IFDS Ideas Forum: Steve Wright
DESCRIPTION:PERSON: Steve Wright \nTITLE: Discussion: Zero-Loss NN training \nABSTRACT: \nBIO:
URL:https://ifds.info/event/ifds-ideas-forum-02152021/
LOCATION:WI
CATEGORIES:IFDS Ideas Forum
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210217T123000
DTEND;TZID=America/Chicago:20210217T133000
DTSTAMP:20260407T032915
CREATED:20210202T162926Z
LAST-MODIFIED:20210202T190606Z
UID:932-1613565000-1613568600@ifds.info
SUMMARY:SILO: Tara Javidi
DESCRIPTION:Generalization to Natural Out-of-Distribution Inputs \nUNTIL FURTHER NOTICE: Seminars are virtual. Sign up for the SILO email list to receive the links to each talk at https://groups.google.com/ and browse for silo
URL:https://ifds.info/event/generalization-to-natural-out-of-distribution-inputs/
LOCATION:WI
CATEGORIES:SILO
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210219T133000
DTEND;TZID=America/Chicago:20210219T143000
DTSTAMP:20260407T032915
CREATED:20210115T203136Z
LAST-MODIFIED:20210115T203136Z
UID:892-1613741400-1613745000@ifds.info
SUMMARY:ML-Opt @ UWash: Omid Sadeghi
DESCRIPTION:Title: \nAbstract:
URL:https://ifds.info/event/ml-opt-uwash-omid-sadeghi/
LOCATION:WI
CATEGORIES:MLOpt@UWash
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210222T133000
DTEND;TZID=America/Chicago:20210222T143000
DTSTAMP:20260407T032915
CREATED:20210202T185957Z
LAST-MODIFIED:20210211T153257Z
UID:954-1614000600-1614004200@ifds.info
SUMMARY:IFDS Ideas Forum: Blake Mason
DESCRIPTION:PERSON: Blake Mason \nTITLE: Metric Learning from Labelled Data is Really Hard \nABSTRACT: \nBIO:
URL:https://ifds.info/event/ifds-ideas-forum-02222021/
LOCATION:WI
CATEGORIES:IFDS Ideas Forum
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210224T123000
DTEND;TZID=America/Chicago:20210224T133000
DTSTAMP:20260407T032915
CREATED:20210202T190745Z
LAST-MODIFIED:20210202T190811Z
UID:959-1614169800-1614173400@ifds.info
SUMMARY:SILO: Jose Blanchet
DESCRIPTION:Title: TBD
URL:https://ifds.info/event/silo-jose-blanchet/
LOCATION:WI
CATEGORIES:SILO
ORGANIZER;CN="Rob%20Nowak":MAILTO:rdnowak@wisc.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210226T133000
DTEND;TZID=America/Los_Angeles:20210226T143000
DTSTAMP:20260407T032915
CREATED:20210115T203300Z
LAST-MODIFIED:20220325T193610Z
UID:894-1614346200-1614349800@ifds.info
SUMMARY:ML-Opt @ UWash: Andrew Wagenmaker
DESCRIPTION:Title:\n\nAbstract:
URL:https://ifds.info/event/ml-opt-uwash-andrew-wagenmaker/
LOCATION:WI
CATEGORIES:MLOpt@UWash
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210301T133000
DTEND;TZID=America/Chicago:20210301T143000
DTSTAMP:20260407T032915
CREATED:20210202T202527Z
LAST-MODIFIED:20210211T153405Z
UID:1031-1614605400-1614609000@ifds.info
SUMMARY:IFDS Ideas Forum: Julian Katz-Samuels
DESCRIPTION:Person: Julian Katz-Samuels \nTitle: \nAbstract: \nBio:
URL:https://ifds.info/event/ifds-ideas-forum-03012021/
LOCATION:WI
CATEGORIES:IFDS Ideas Forum
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210303T123000
DTEND;TZID=America/Chicago:20210303T133000
DTSTAMP:20260407T032915
CREATED:20210202T193324Z
LAST-MODIFIED:20210202T193741Z
UID:992-1614774600-1614778200@ifds.info
SUMMARY:SILO: Tuo Zhao
DESCRIPTION:
URL:https://ifds.info/event/silo-tuo-zhao/
LOCATION:WI
CATEGORIES:SILO
ORGANIZER;CN="Rob%20Nowak":MAILTO:rdnowak@wisc.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210305T133000
DTEND;TZID=America/Los_Angeles:20210305T143000
DTSTAMP:20260407T032915
CREATED:20210115T200409Z
LAST-MODIFIED:20210305T213122Z
UID:867-1614951000-1614954600@ifds.info
SUMMARY:IFDS All-Hands: Yang Liu
DESCRIPTION:Prof. Yang Liu\, Computer Science Dept\, UC Santa Cruz \nTitle: Consequential Machine Learning \nAbstract: Recent findings cautioned the potential unfairness issues that can arise when deploying a machine learning model. Correspondingly\, treatments have been proposed to add fairness guarantees when training such statistical models. An often overlooked question is “what after?” One can discover ways to improve the model after deployment\, and after receiving feedback from human subjects that saw these algorithmic treatments. But the unfortunate fact is once a model is deployed\, it will start to impact a later decision and the society for a long period of time. In this talk\, I am going to introduce some of the recent works that initialize our attempt to understand the consequences of the deployment of a machine learning algorithm. We will first show that an appeared-to-be fair algorithm might not necessarily help reduce disparities among societal groups that we aim to protect. The long-term impacts of a sequence of deployments of machine learning models will depend on the induced dynamics of the underlying populations’ qualification. Then I discuss how to use the design and deployment of machine learning to induce proper dynamics by offering human agents actionable recourse to improve their qualifications. \nAll Hands titles and abstracts are tentative\, as of the posting date.
URL:https://ifds.info/event/ifds-monthly-all-hands-2/
LOCATION:WI
CATEGORIES:Monthly All-Hands
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210308T133000
DTEND;TZID=America/Chicago:20210308T143000
DTSTAMP:20260407T032915
CREATED:20210202T202742Z
LAST-MODIFIED:20210211T153635Z
UID:1033-1615210200-1615213800@ifds.info
SUMMARY:IFDS Ideas Forum: Nicolas Garcia Trillos
DESCRIPTION:Person: Nicolas Garcia Trillos \nTitle: Adversarial classification\, optimal transport\, and geometric evolutions \nAbstract: \nBio: I am currently an Assistant Professor in the Department of Statistics at the University of Wisconsin Madison. From 2015 – 2018\, I was a Prager Assistant Professor (postdoctoral position) at Brown University. I finished my Ph.D in mathematics at Carnegie Mellon University in 2015; my adviser was Dejan Slepčev. I received my Bachelor’s degree in mathematics from Universidad de Los Andes in Bogotá\, Colombia\, in 2010.
URL:https://ifds.info/event/ifds-ideas-forum-03082021/
LOCATION:WI
CATEGORIES:IFDS Ideas Forum
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210310T123000
DTEND;TZID=America/Chicago:20210310T133000
DTSTAMP:20260407T032915
CREATED:20210202T195033Z
LAST-MODIFIED:20210308T174906Z
UID:1008-1615379400-1615383000@ifds.info
SUMMARY:SILO: Zhao Song
DESCRIPTION:Title: Faster Optimization: From linear programming to semidefinite programming \nAbstract: Many important real-life problems\, in both convex and non-convex settings\, can be solved using path-following optimization methods. The running time of optimization algorithms is typically governed by two components — the number of iterations and the cost-per-iteration. For decades\, the vast majority of research effort was dedicated to improving the number of iterations required for convergence. A recent line of work of ours shows that the cost-per-iteration can be dramatically improved using a careful combination of dynamic data structures with `robust’ variants of the optimization method. A central ingredient is the use of randomized linear algebra for dimensionality reduction (e.g.\,  linear sketching) for fast maintenance of dynamic matrix problems. This framework recently led to many breakthroughs on decade-old optimization problems. \nIn this talk\, I will present the framework underlying these breakthroughs\, focusing on faster algorithms for linear programming and semidefinite programming. We will first present how to use the above idea to speed up general LP solvers by providing an n^omega + n^{2+1/18} time algorithm. We then show how to apply similar ideas to SDP solvers by providing an n^omega + n^{2+1/4} time algorithm. For the current omega = 2.373\, we can solve LP and SDP as fast as solving linear systems. \nThis is a joint work with\nBaihe Huang (undergraduate at Peking University)\,\nShunhua Jiang\, Runzhou Tao\, Hengjie Zhang (Ph.D. at Columbia University)\,\nOmri Weinstein (Professor at Columbia University) \nLP paper    : https://arxiv.org/abs/2004.07470\nSDP paper : https://arxiv.org/abs/2101.08208 \n  \nUNTIL FURTHER NOTICE: Seminars are virtual. Sign up for the SILO email list to receive the links to each talk at https://groups.google.com/ and browse for silo
URL:https://ifds.info/event/silo-zhao-song/
LOCATION:WI
CATEGORIES:SILO
ORGANIZER;CN="Rob%20Nowak":MAILTO:rdnowak@wisc.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210310T130000
DTEND;TZID=America/Chicago:20210310T133000
DTSTAMP:20260407T032915
CREATED:20210202T200752Z
LAST-MODIFIED:20210202T200808Z
UID:1010-1615381200-1615383000@ifds.info
SUMMARY:SILO: Yuanzhi Li
DESCRIPTION:Title: TBD \nUNTIL FURTHER NOTICE: Seminars are virtual. Sign up for the SILO email list to receive the links to each talk at https://groups.google.com/ and browse for silo
URL:https://ifds.info/event/silo-yuanzhi-li/
LOCATION:WI
CATEGORIES:SILO
ORGANIZER;CN="Rob%20Nowak":MAILTO:rdnowak@wisc.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210312T133000
DTEND;TZID=America/Chicago:20210312T143000
DTSTAMP:20260407T032915
CREATED:20210115T203442Z
LAST-MODIFIED:20210115T203442Z
UID:896-1615555800-1615559400@ifds.info
SUMMARY:ML-Opt @ UWash: Vincent Roulet
DESCRIPTION:Title: Global convergence of first-order methods for nonlinear control problems \nAbstract:
URL:https://ifds.info/event/ml-opt-uwash-vincent-roulet/
LOCATION:WI
CATEGORIES:MLOpt@UWash
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210315T133000
DTEND;TZID=America/Chicago:20210315T140000
DTSTAMP:20260407T032915
CREATED:20210114T195355Z
LAST-MODIFIED:20210211T153918Z
UID:818-1615815000-1615816800@ifds.info
SUMMARY:IFDS Ideas Forum: Aditya Kumar Akash & Sixu Li
DESCRIPTION:Aditya Kumar Akash & Sixu Li \nTitle: Deep fusion through Wasserstein barycenters in TLp spaces \nAbstract:
URL:https://ifds.info/event/ifds-ideas-forum-liu-yang/
LOCATION:Webex
CATEGORIES:IFDS Ideas Forum
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210317T123000
DTEND;TZID=America/Chicago:20210317T133000
DTSTAMP:20260407T032915
CREATED:20210202T200937Z
LAST-MODIFIED:20210316T152530Z
UID:1013-1615984200-1615987800@ifds.info
SUMMARY:SILO: Sebastien Bubeck
DESCRIPTION:Title:  A law of robustness for two-layers neural networks \nUNTIL FURTHER NOTICE: Seminars are virtual. Sign up for the SILO email list to receive the links to each talk at https://groups.google.com/ and browse for silo
URL:https://ifds.info/event/silo-sebastien-bubeck/
LOCATION:WI
CATEGORIES:SILO
ORGANIZER;CN="Rob%20Nowak":MAILTO:rdnowak@wisc.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210322T133000
DTEND;TZID=America/Chicago:20210322T143000
DTSTAMP:20260407T032915
CREATED:20210201T203015Z
LAST-MODIFIED:20210219T192804Z
UID:1035-1616419800-1616423400@ifds.info
SUMMARY:IFDS Ideas Forum: Tara Javidi
DESCRIPTION:Person: Tara Javadi \nTitle: \nAbstract: \nBio:
URL:https://ifds.info/event/ifds-ideas-forum-03222021/
LOCATION:WI
CATEGORIES:IFDS Ideas Forum
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210324T080000
DTEND;TZID=America/Chicago:20210324T170000
DTSTAMP:20260407T032915
CREATED:20210202T201035Z
LAST-MODIFIED:20210202T201035Z
UID:1015-1616572800-1616605200@ifds.info
SUMMARY:SILO: Alon Orlitsky
DESCRIPTION:Title: TBD \nUNTIL FURTHER NOTICE: Seminars are virtual. Sign up for the SILO email list to receive the links to each talk at https://groups.google.com/ and browse for silo
URL:https://ifds.info/event/silo-alon-orlitsky/
LOCATION:WI
CATEGORIES:SILO
ORGANIZER;CN="Rob%20Nowak":MAILTO:rdnowak@wisc.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210329T133000
DTEND;TZID=America/Chicago:20210329T140000
DTSTAMP:20260407T032915
CREATED:20210114T203812Z
LAST-MODIFIED:20210115T201047Z
UID:825-1617024600-1617026400@ifds.info
SUMMARY:IFDS Ideas Forum: Jeffrey Covington
DESCRIPTION:Title: \nAbstract: \nJeffrey Covington (Mathematics)\, advised by Nan Chen (Mathematics) and Sebastien Roch (Mathematics)\, works on data assimilation for model state estimation and prediction. His primary focus is on models with nonlinear and non-Gaussian features\, which present problems for traditional data assimilation techniques. Currently he is working on developing techniques for Lagrangian data assimilation problems\, which typically involve high-dimensionality and strong nonlinear interactions.
URL:https://ifds.info/event/ifds-ideas-forum-jeffrey-covington/
LOCATION:Webex
CATEGORIES:IFDS Ideas Forum
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20210331T123000
DTEND;TZID=America/Chicago:20210331T133000
DTSTAMP:20260407T032915
CREATED:20210202T201200Z
LAST-MODIFIED:20210219T193005Z
UID:1017-1617193800-1617197400@ifds.info
SUMMARY:SILO: Jean Honorio
DESCRIPTION:Title: TBD \nUNTIL FURTHER NOTICE: Seminars are virtual. Sign up for the SILO email list to receive the links to each talk at https://groups.google.com/ and browse for silo
URL:https://ifds.info/event/silo-03312021/
LOCATION:WI
CATEGORIES:SILO
ORGANIZER;CN="Rob%20Nowak":MAILTO:rdnowak@wisc.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210402T133000
DTEND;TZID=America/Los_Angeles:20210402T143000
DTSTAMP:20260407T032915
CREATED:20210115T201436Z
LAST-MODIFIED:20210331T134630Z
UID:880-1617370200-1617373800@ifds.info
SUMMARY:IFDS All-Hands: Chaobing Song & Xuezhou Zhang
DESCRIPTION:Speaker 1: Dr. Chaobing Song\, IFDS Postdoctoral Scholar at U Wisconsin (advised by Prof.s Jelena Diakonikolas and Steve Wright)\n\nTitle: Closing Convergence Gaps for Both Smooth and Nonsmooth Convex Finite-Sums\n \nAbstract: In the Foundation of Data Science\, optimization problems with a finite-sum structure widely exist\, such as the classical empirical risk minimization problem and deep neural network. In the past decade\, one main concern in the study of first-order methods is to study how the finite-sum structure influences optimization efficiency and scalability. In this talk\, based on my work (https://arxiv.org/abs/2006.10281\, https://arxiv.org/abs/2102.13643)\, I will talk about a consistent approach based on dual averaging and a particularly designed initialization strategy to close convergence gaps for smooth convex finite-sums and nonsmooth convex finite-sums. For the first time\, the proposed VRADA algorithm (https://arxiv.org/abs/2006.10281) matches the lower bounds of all the three regimes for smooth convex finite-sums; for the first time\, the proposed VRPDA^2 algorithm  (https://arxiv.org/abs/2102.13643) shows an O(n) improvement theoretically over existing deterministic methods and stochastic primal-dual coordinate methods\, where n is the number of data samples. Both algorithms also have good empirical performance.\n\n \nSpeaker 2: Xuezhou Zhang\, IFDS RA (advised by Prof. Jerry Zhu)\n \n\nTitle: Statistical Robustness in Reinforcement Learning\n \nAbstract: Traditional robust statistics studies the problem of statistical estimation under data contamination. In this talk\, we extend this investigation to decision-making problems. In the first half of the talk\, I will illustrate the concept and unique challenge of robust Decision making using a multi-armed bandit as an example. In the second half of the talk\, I will present some of the lower and upper-bound results we have already established\, and discuss several open directions. This talk is partially based on our recent paper [https://arxiv.org/pdf/2102.05800.pdf].\n\n \n\n—-\nSpeaker Bios:\n \nDr. Chaobing Song: I am a postdoc researcher at University of Wisconsin-Madison with Prof. Jelena Diakonikolas and Prof. Stephen J Wright. My research interests include optimization and machine learning. I obtained my Ph.D. degree at Tsinghua University in 2020 supervised by Prof. Yi Ma from University of California\, Berkeley (who is an affiliate professor at Tsinghua-Berkeley Shenzhen Institute\, Tsinghua University). I spent two wonderful years at Berkeley and finished my Ph.D. thesis there. The main focus of my current research is to apply a general\, powerful and concise framework [arXiv] to optimization problems in machine learning. The development based on this framework substantially improves complexity results in many well-known settings\, such as the setting of nonsmooth convex finite-sums in this talk.  \n \nXuezhou Zhang: Xuezhou is a Ph.D. candidate in the computer sciences department at the University of Wisconsin-Madison\, advised by Professor Jerry Zhu. Before coming to Madison\, he obtained a Bachelor of Applied Mathematics degree from UCLA. His research interests lie in machine learning and reinforcement learning\, and his recent research focuses on designing reinforcement learning algorithms that learn more adaptively and robustly in non-stochastic environments.\n\nThese talks are remote via zoom. Please contact the organizer if you need the link. \nAll-Hands titles and abstracts are tentative\, as of the posting date.
URL:https://ifds.info/event/ifds-all-hands-040221/
LOCATION:WI
CATEGORIES:Monthly All-Hands
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DTSTART;TZID=America/Chicago:20210405T133000
DTEND;TZID=America/Chicago:20210405T143000
DTSTAMP:20260407T032915
CREATED:20210202T203119Z
LAST-MODIFIED:20210211T154049Z
UID:1037-1617629400-1617633000@ifds.info
SUMMARY:IFDS Ideas Forum: Liu Yang
DESCRIPTION:Person: Liu Yang \nTitle: \nAbstract: \nBio:
URL:https://ifds.info/event/ifds-ideas-forum-04052021/
LOCATION:WI
CATEGORIES:IFDS Ideas Forum
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