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X-WR-CALDESC:Events for CREST
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DTSTART:20210328T010000
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DTSTART;TZID=Europe/Helsinki:20210510T140000
DTEND;TZID=Europe/Helsinki:20210510T151500
DTSTAMP:20260713T001555
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LAST-MODIFIED:20210430T052448Z
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SUMMARY:Gabor LUGOSI (Pompeu Fabra University)- "Mean estimation in high dimensions "
DESCRIPTION:Statistical Seminar: Every Monday at 2:00 pm.\nTime: 2:00 pm – 3:15 pm\nDate: 10th of May 2021\nPlace: Visio\nGabor LUGOSI (Pompeu Fabra University) – “Mean estimation in high dimensions ” \nAbstract: We consider the problem of estimating the mean of a random vector based on independent\, identically distributed observations. In particular\, we are interested in estimators that are close to the true mean vector in all directions. We prove the existence of an estimator that has a near-optimal error in all directions in which the variance of the one dimensional marginal of the random vector is not too small. The random vector may have a heavy-tailed distribution. \nThe proof relies on novel uniform bounds for the ratio of empirical and true probabilities. \nThe talk is based on joint work with Shahar Mendelson. \nOrganizers:\nCristina BUTUCEA (CREST)\, Alexandre TSYBAKOV (CREST)\, Karim LOUNICI (CMAP) \, Zoltan SZABO (CMAP)\nSponsors:\nCREST-CMAP \n\n
URL:https://crest.science/event/gabor-lugosi-pompeu-fabra-university-tba/
CATEGORIES:Statistics
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DTSTART;TZID=Europe/Helsinki:20210510T140000
DTEND;TZID=Europe/Helsinki:20210510T151500
DTSTAMP:20260713T001555
CREATED:20210506T104329Z
LAST-MODIFIED:20210506T104329Z
UID:12700-1620655200-1620659700@crest.science
SUMMARY:Franck PORTIER (UCL)\,  "Monetary Policy when the Phillips Curve is Locally Quite Flat "
DESCRIPTION:The Macroeconomics Seminar: \nTime: 14:00 pm – 15:15 pm\nDate: 10th of May 2021\nby Zoom\n\n\nFranck PORTIER (UCL) \, “Monetary Policy when the Phillips Curve is Locally Quite Flat ” \nAbstract :This papers begins by highlighting how the presence of a cost channel of monetary policy can offer new insights into the behavior of inflation when the Phillips curve is locally quite flat. For instance\, we highlight a key condition whereby lax monetary policy can push the economy in a low inflation trap and we discuss how\, under the same condition\, standard policy rules for targeting inflation may need to be modified. In the second part of the paper we explore the empirical relevance of the conditions that give rise to these observations using US data. To this end\, we present both (i) a wide set of estimates derived from single-equation estimation of the Phillips curve and (ii) estimates based on structural estimation of a full model. The results from both sets of empirical exercises strongly support the key condition we derived. \nJoint work with : Paul Beaudry (Bank of Canada)\, Chenyu Hou (University of British Columbia) \nOrganizers:\n\nOlivier LOISEL (CREST) \nSponsors:\nCREST \n\n
URL:https://crest.science/event/franck-portier-ucl-monetary-policy-when-the-phillips-curve-is-locally-quite-flat/
CATEGORIES:Macroeconomics
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