Profile

Cover photo
Hyokun Yun
Works at Amazon.com
Attended Purdue University
Lives in Seattle, USA
314 followers|128,250 views
AboutPostsPhotosYouTube

Stream

Hyokun Yun

Shared publicly  - 
 
When I am developing a software, I feel like I am executing a stochastic gradient descent algorithm myself. You start with a large step size: you define a lot of important classes and everything is very flexible at that time...
1
Vasil S Denchev's profile photoHyokun Yun's profile photo
2 comments
 
+Vasil S Denchev actually that's what occurred to me when I was writing it :) but my knowledge on Tabu search is very limited while I have some familiarity with SGD.  Anyways I totally agree with everything you've said in the comment!  Software engineering is more of discrete optimization anyways.
Add a comment...

Hyokun Yun

Shared publicly  - 
 
probably not a good practice of decltype... (C++11 new feature)
OK, I thought C++11 was cool, but I am ending up writing a code like this: row_assign_ = my_allocator::type>().allocate(num_rows_); is this really better than row_assign_ = my_allocator().allocate(num_rows_); is... quite... ...
1
Add a comment...

Hyokun Yun

Shared publicly  - 
 
At last, finished reading this book... 'the signal and the noise'.
At last, I have finished reading the book 'the signal and the noise: why so many predictions fail- but some don't'. It does a very good job in explaining 1) why it is important for us to understand uncertainty - the central t...
2
Add a comment...

Hyokun Yun

Shared publicly  - 
 
I have been trying to use C++11 lately, but I think it is not yet safe to make a transition. I am using intel compiler (for TBB stuff) and it has compile error with deque.tcc... It was reported two years ago http://software.intel.com/en-us/forums/topic/281808 but surprisingly seem to be not fixed!?

It could be my fault, or there could be a workaround, but I feel like relying on C++11 will cause another trouble at some point in the future. Too bad, as C++11 syntax makes TBB code much simpler with lambda expression.
In building our code with ICC 12.1, we are getting a compiler error with the GCC header file for deque. The problem does not occur with ICC 11 and does not depend precisely on gcc 4.5.3. icpc version:...
1
Add a comment...

Hyokun Yun

Shared publicly  - 
 
My problem with Chrome seems to be reproduced by many other people according to my Twitter timeline; this is quite surprising that even engineers and QAs at Google forgot to check exception handling for server down. OK, nobody is perfect; so I will be lenient towards my inability to develop fault-tolerant software.
1
Add a comment...

Hyokun Yun changed his profile photo.

Shared publicly  - 
1
Philgoo Han's profile photo
 
효근이다~
 ·  Translate
Add a comment...
Have him in circles
314 people
J Yeo's profile photo
Daeil Kim's profile photo
Ikjoo Byun's profile photo
Dongyeop Kang's profile photo
Joo Eun Lee's profile photo
장종희's profile photo
Kangmin KIM's profile photo
Mengchao Wang's profile photo
진달래's profile photo

Hyokun Yun

Shared publicly  - 
 
another rant of my on cmake and c++11 compliance...
The reason I wasted 2 sweet afternoon hours of Saturday: 1) cmake 2.8.10 has a bug which removing CMakeCache.txt does not completely remove cached values of previous execution. Attempting -DCMAKE_CXX_COMPILER=icpc even result...
1
Add a comment...

Hyokun Yun

Shared publicly  - 
 
A question that bothers me: 1. simple model + small data: OK, if you have good understanding on the generative process. 2. complex model + small data: most likely fail due to overfitting, unless the noise is very very small s...
2
Kheng Rothea's profile photo
 
Oh
Add a comment...

Hyokun Yun

Shared publicly  - 
 
Please recommend me a good color theme for emacs in coding C++. From default theme list I liked 'Midnight' best - I am looking for black or gray background - but I am pretty sure there's better one.
1
Youngmok Yun's profile photoCosmo Zhang's profile photoHyokun Yun's profile photo
7 comments
 
+Cosmo Zhang Well i guess thats kinda biased due to clustering! My "neighbors" are mostly emacs users, although it is partly my influence :-)
Add a comment...

Hyokun Yun

Shared publicly  - 
 
# of Chinese friends that I could convert to use 'Lunar New Year's Day' for 4 years: 0

No offense to Chinese friends, I understand your position. Although I think probably the more effective strategy is for me to use 'Korean New Year' from now on, to make other people confused and then beware of other countries that share the same day of celebration eventually.

Or, Koreans may abolish everything and start the new tradition of 'Gangnam Style New Year' which every people, old and young, man and woman and queer, all gather and dance Gangnam Style... This may popularize more easily than 'Korean New Year'.
1
Add a comment...

Hyokun Yun

Shared publicly  - 
 
I just tried gflags, a command-line parsing library from Google. It had many attractive features I wanted, but unfortunately its help message is not well-suited for a general software... too geeky and exposes too much of internal information! If I am developing an in-house software (in Google!?) this could be an awesome choice but I will stay with boost program_options for now. Sure, its open source and I may customize the help message but most likely it is waste of my time.
1
Add a comment...

Hyokun Yun

Shared publicly  - 
 
It seems like Google is having some problem with their servers, and neither Google mail (gmail) nor Google docs is working for me. Curiously, every time I open Google Chrome it crashes after a minute; it seems like exception handling is not properly done for the case Google servers are not responding.
1
Add a comment...
People
Have him in circles
314 people
J Yeo's profile photo
Daeil Kim's profile photo
Ikjoo Byun's profile photo
Dongyeop Kang's profile photo
Joo Eun Lee's profile photo
장종희's profile photo
Kangmin KIM's profile photo
Mengchao Wang's profile photo
진달래's profile photo
Work
Occupation
Machine Learning Scientist
Skills
Machine Learning, Statistical Analysis, Optimization, Distributed Computing
Employment
  • Amazon.com
    Machine Learning Scientist, 2014 - present
  • Cyram(c)
    Associate Researcher, 2006 - 2008
  • Accenture(c)
    Intern, 2004 - 2004
  • Max Planck Institue for Biological Cybergenetics
    Internship Researcher, 2011 - 2011
  • Blizzard Entertainment
    Predictive Analytics Intern, 2012 - 2012
  • Microsoft Research India
    Research Intern, 2012 - 2012
  • Amazon.com
    Machine Learning Intern, 2013 - 2013
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Seattle, USA
Previously
West Lafayette, USA - Irvine, USA - Tuebingen, Germany - Seoul, Korea - Pohang, Korea - Seattle, USA
Links
YouTube
Other profiles
Contributor to
Story
Bragging rights
Winner of 2013 Amazon Machine Learning Hackend
Education
  • Purdue University
    Statistics, 2009 - 2014
  • Postech
    Industrial and Management Engineering, Mathematics, 2002 - 2009
  • Banpo High Shcool
    1999 - 2002
Basic Information
Gender
Male
Other names
윤효근