HOME > Notice >Seminar & Colloquium

Seminar & Colloquium

Seminar & Colloquium 게시글의 상세 화면
제목 Seminars and Talks of this week (May 14~18, 2018)
작성자 관리자 등록일 2018-05-11 조회수 27

Seminars and Talks of this week

 

SKKU, General Bd 3F, AORC Seminar Room

Invited Lectures

  Speaker: 김동환(Donghwan Kim) (Department of Mathematics at Dartmouth College)

  May 17 (Thursday) 14:00-15:30
  Title: Accelerated Gradient Methods for Large-scale Convex Optimization    
 
  Abstract: 
 Many modern applications such as machine learning, inverse problems, and control require solving large-dimensional optimization problems. First-order methods such as a gradient method are widely used to solve such large-scale problems, since their computational cost per iteration mildly depends on the problem dimension. However, they suffer from slow convergence rates, compared to second-order methods such as Newton's method. Therefore, accelerating a gradient method has received a great interest in the optimization community, and this led to the development and extension of a conjugate gradient method, a heavy-ball method, and Nesterov's fast gradient method, which we review in this talk. This talk will then present new proposed accelerated gradient methods, named optimized gradient method (OGM) and OGM-G, that have the best known worst-case convergence rates for smooth convex optimization among any accelerated gradient methods.     

 


Riordan Group Seminar

  May 16 (Wednesday)


    13:30-14:10  Ji-Hwan Jung,  Competition graphs of oriented Riordan graphs

    14:10-14:50  Seyed A. Mojallal,  (Edge) clique covering number of (Riordan) graphs

    14:50-15:30  Bumtle Kang,  (Edge) clique covering number of (Riordan) graphs

    15:40-16:20  Minho Song,  Commutator subgroup of the Riordan group

    16:20-17:00  Sohyeon Gyeong,  Study of Chordal graphs

Seminar & Colloquium 게시판의 이전글 다음글
이전글 [2018/05/24] Dr. Juyoung Jeong (UMBC)
다음글 [2018.05.15]Professor, Haesun Park(Georgia Institute of Technology,USA)
목록