Previous Conferences & Workshops

Dec
04
2019

Theoretical Machine Learning Seminar

Uncoupled isotonic regression
12:00pm|Dilworth Room

The classical regression problem seeks to estimate a function f on the basis of independent pairs $(x_i,y_i)$ where $\mathbb E[y_i]=f(x_i)$, $i=1,\dotsc,n$. In this talk, we consider statistical and computational aspects of the "uncoupled" version...

Dec
03
2019

Joint IAS/PNI Seminar on ML and Neuroscience

A distributional code for value in dopamine-based reinforcement learning
Matthew Botvinick
3:00pm|Princeton Neuroscience Institute, Room A32

Twenty years ago, a link was discovered between the neurotransmitter dopamine and the computational framework of reinforcement learning. Since then, it has become well established that dopamine release reflects a reward prediction error, a surprise...

Dec
03
2019

Computer Science/Discrete Mathematics Seminar II

Regularity lemma and its applications Part I
10:30am|Simonyi Hall 101

Szemeredi's regularity lemma is an important tool in modern graph theory. It and its variants have numerous applications in graph theory, which in turn has applications in fields such as theoretical computer science and number theory. The first part...

Dec
02
2019

Analysis Seminar

Distance estimate on Kähler manifolds
5:00pm|Simonyi Hall 101

I will prove the following surprising fact: on a given Kahler manifold (X, J, \omega), a Holder bound on the Kahler potential \phi implies a Holder bound on the distance function of the new Kahler metric \omega+dd^c \phi. Time permitting I will also...

Dec
02
2019

Symplectic Dynamics/Geometry Seminar

Disjoint Lagrangian spheres and cyclic dilations
Yin Li
3:30pm|Simonyi Hall 101

An exact Calabi-Yau structure, originally introduced by Keller, is a special kind of smooth Calabi-Yau structures in the sense of Kontsevich-Vlassopoulos. For a Weinstein manifold, an exact Calabi-Yau structure on the wrapped Fukaya category induces...

Dec
02
2019

Members’ Seminar

Mathematical models of human memory
2:00pm|Simonyi Hall 101

Human memory is a multi-staged phenomenon of extreme complexity, which results in highly unpredictable behavior in real-life situations. Psychologists developed classical paradigms for studying memory in the lab, which produce easily quantifiable...

Dec
02
2019

Computer Science/Discrete Mathematics Seminar I

Rainbow fractional matchings
Ron Holzman
11:00am|Simonyi Hall 101

Given a family of m matchings in a graph G (where each matching can be thought of as a color class), a rainbow matching is a choice of edges of distinct colors that forms a matching. How many matchings of size n are needed to guarantee the existence...

Nov
26
2019

Theoretical Machine Learning Seminar

A Fourier Analysis Perspective of Training Dynamics of Deep Neural Networks
11:30am|White-Levy

This talk focuses on a general phenomenon of "Frequency-Principle" that DNNs often fit target functions from low to high frequencies during the training. I will present empirical evidences on real datasets and deep networks of different settings as...

Nov
26
2019

Computer Science/Discrete Mathematics Seminar II

Constraint Satisfaction Problems and Probabilistic Combinatorics II
Fotios Illiopoulos
10:30am|Simonyi Hall 101

The tasks of finding and randomly sampling solutions of constraint satisfaction problems over discrete variable sets arise naturally in a wide variety of areas, among them artificial intelligence, bioinformatics and combinatorics, and further have...