Suddenly

 Get very busied..

planning to...

1. have to have qual. exam to graduate, needs to visit Korea for few weeks, also renew my visa and passport,

2. have to graduate soon, maybe early at 2011,
3. applying postdoc positions very soon, needs to write application forms and get recommendation letters,

4. make current projects work, which makes me very busy,

5. and...

might have no time for even drinking? :)

TAOS paper - second author

TAOS photometry paper. finally... Almost 4 years after I contributed the pipeline.

Nevertheless, published anyway :)

Zhi-Wei Zhang, Dae-Won Kim, and et al.

http://adsabs.harvard.edu/abs/2009PASP..121.1429Z

so exhausted..

don't know why.. just so tired..

needs some refreshment..

추수감사절, 보스톤 (Thanksgiving 2009)

They like torturing me :)

Pissed off

Tired.

Koreana, Boston (코리아나, 보스톤)

어제 저녁에 노교수님이 저녁초대를 해주셔서
코리아나 식당으로 저녁을 먹으러 갔다.
마침 비가 오는 날이라 우산을 쓰고 천천히 걸어갔다.

식당에 6시 즈음 도착해서 로비에서 예약확인하고 기다리고 있었다.
저녁이 6시 예약이었는데, 교수님이 조금 늦으시길래
전화를 드려야 해서 한손에 연락처, 한손에
핸드폰을 들고 전화를 해야해서
우산을 바닥에 잠깐 내려놓았다.

그러자, 거기 있는 (50?쯤 되어보이는) 매니져라는
사람이 우산을 바닥에 놓으면 미끄러우니
바깥 쪽 우산꽂이에 넣으라고 하더라.
우산꽂이를 처음 들어올때 보지를 못했던지라,
전화 후에 꽂아놓겠다고 대답을 했다.

그러자.. 이 매니져 거의 윽박을 지른다..
다른 손님들이 물 때문에 미끄러울 수 있다는 것이다.
그렇게 걱정이 되면 종업원을 시키거나
자신이 직접 내 우산을 가져다 꽂으면 될 것 아닌가.

뻔히 전화기 양손에 들고 있어서 우산을 들 손이 없고,
또 늦으시는 노교수님 어디계신지 확인하느라 정신없는 상태인 걸
뻔히 보면서, 같은 '손님'인 나를 윽박지르는 건 뭔가?

차마 노교수님이 잡은 저녁 장소를 내 마음대로
바꿀 수가 없어 말없이 우산을 가지고
밖으로 나왔지만.. 친구들과의 예약이었다면
한 판 질러버리고 싶을 정도로 예의가 없는 매니져였다.

여튼 노교수님과 어찌 어찌 연락이 닿아서
(마침 내가 노교수님 전화번호가 없어서 다른 분한테 물어물어
전화하느라 더 정신이 없었다.)
약 30분 정도 늦으신다고 하여 예약을 늦추고 기다리고 있었다.

약 30분 정도 후에, 노교수님이 오셨고,
노교수님도 늦으신게 조금 미안하셨는지
매니져에게 가셔서, 웃으시면서 늦어서 죄송하다는 말씀을 하셨다.

그런데... 이 매니져... 정말 비매너다.
나이가 70이 되신 백발이 성성하신 어르신이 사과를 하시는데
전혀 웃지도 않고 사과를 받는 태도도 보이지 않는다..

정말 서비스 정신이라곤 찾아보기가 힘든...

다른 여자 매니져분은 처음에 예약 늦춰야 한다고 했을때는
조금 딱딱하게 하다가 (뭐 이것도 기분좋은 일은 아니지만), 그래도
조금 후에는 웃으면서 얘기를 하시던데...

그 남자 매니져... 아무래도 1) 코리아나를 망하게 하고 싶거나, 2) 나이를...
뭐 여튼...

아 물론, 서빙보시는 분은 아주 좋았다. 싹싹하시고 친절하시고..

그럼 뭐해. 매니져가 그런데..

코리아나 두번째 가는 거였는데, 두번다 그다지 기억이 좋지 않다.
절대 다른 사람들한테 추천 안한다. 아니 간다 그러면 말릴거다..

What an irritating..

겁나 짜증.

아 이 당황스러움이란 ㅋㅋ

산행에서 처음 만나뵙게 된 한 노교수분께서,
타지에서 혼자인 내가 안쓰러우셨는지
누군가를 소개시켜줄테니 한번 만나보라고 하셨다.

어르신께서 청하시는 거라 거절할 수도 없어, 그러리라고 대답하고
한달 정도 그분을 못 뵈다가 얼마전에 다시 뵈었는데
내 연락처를 달라고 하시길래 이메일을 드렸다.

얼마후에 노교수님께서 내 이메일로 연락을 하셔서 저녁이나
같이 하자고 하시면서 그 처자 얘기를 다시 하셨다.

마침 이메일에 cc 로 그 처자가 첨부되어있길래,
보았더니 이름이 상당히 남자 이름이었다.

살짝 당황하긴 했지만,
처음 그 말씀을 꺼내신지도 이미 한달여가 지난 뒤라
더 늦추면 소개시켜주시는 분께도 처자분께도 실례가 될까하여
메일을 보냈다..

그런데... 그런데...

정말 남자였다 ㅠ.ㅠ.... 노교수님께서 cc를 이전 메일에서 하셨던 걸
모르고 그대로 두신 모양이었다. 하루 정도 후에 그 남자분께서
노교수님께 메일을 드린 듯 하다. 아마도 내용은..

"교수님, 어떤 미친 놈이 자기 소개를 보내더니 만나자고 합니다. 어떻하죠?"

대충 이런 내용이 아니었을까... 아.. 정말 배 터지게 웃었다 그날 ㅡ.ㅡ;;;

여튼 교수님이 다시 그 처자의 메일 주소를 주셔서 이메일을 보냈더니..
다음날 다시 교수님한테 메일이 왔다.. 내용인 즉슨..
그 처자가 어릴 때 미국을 와서 영어로 대화를 해야 한다는 것...

어이쿠야... 우리말로도 힘든 대화를 영어로 해야한다니..
미션 임파서블이다.. 끝이 벌써 보인다 ㅋㅋ

update #1. 내가 메일 잘못 보낸 그 남자분... 교수님이 소개시켜주시려던 처자의 아버님이셨다
커허.. 엄청난 결례를... ㅡ.ㅡ;;;

보스톤 산악회

두번째로 참석한 정기 산행.
산 이름은 까먹었슴 :)

워낙 많은 분들이 카메라를 들고 오셔서
굳이 카메라가 없어도 사진이 넘쳐남. 뭐 이젠 덩치 큰 놈 들고다니기도 귀찮고 :)

Drowning

Today, I was almost drowned during swim class. We moved out from a practice pool which is sallow to deep one (~ 2.5m) to try 'floating' (i.e. stay still in one spot and breath. Is it vertical floating? I don't what is a correct word for that).

Since this is my first time to learn how to swim, I have never tried to float before as well.
At the first time, I grabbed the wall and tried to float. After a few minutes, I released the wall in order to see if I could float.. But, you know, of course I was sinking into the water. Actually, I expected that so I was not scared.

But... I expected that I could reach the bottom and kick it to come back to the surface.. But... no.. I was failed to reach the bottom and running out of my breath just inside the water..

After about 10(?) seconds of struggling to reach the bottom, I almost ran out of my breath and actually drank water through my nose and mouse.. I think I was about to be drowned :)

Anyway, fortunately, just at that time (after drank some water), I reached the bottom (thanks god...) and could come back to the surface and grab the wall again.

Interestingly, I was not in panic at all even when I drank a lot of water due to lack of oxygen in my lung. I was almost calm.. hm...., which means... what?? Maybe I'm that much dull? haha..


Lesson : Stick to the stairs at the wall if you want to try float. At least you can grab the stairs and climb.

카디건 산 산행, 보스톤 (Mt. Cardigan, Boston)

몸도 영 찌뿌둥하고 한 차에..보스톤 산악회에서 산행을 한다기에 냅다 쫓아갔다 왔다.

뭔 산행 중에 과제가... 살짝 귀찮긴 했으나 ㅡ.ㅡ;;
처음 나간거니 '되도록' 열심히 ㅋㅋ

같은 조 소속이셨던 '캔두' 님. 하산하면서 말벗이 되주셔서 심심하지 않았다.
집으로 놀러오라시던데.. 언제 불러주시려나 :)

마지막 정리하는 사진. 산에서는 날씨가 너무 안좋아서 시야가 전혀 없더니..
하산하니 해가 쨍쨍... 모래알은 반짝...

여기부터는 내 카메라 사진 몇장

영.. 전부 안개

그나마 산 아랫자락에서는 앞은 보였음.




산 정상 부근.. 아무것도 안보인다 0_0..


정년퇴임하시고 올해 일흔이 되신다는 캔두님. 한발 한발 쉬지않고 올라가시는 모습.


산행만을 기대하고 갔었지만, 좋은 사람들도 만나 더 값졌던 토요일 하루.

My Macbook Pro and iPod touch.

I really like them :)

What a amazing.

Different colors and symbols mean different variability types. The majority of the biggest cluster above (blue one) might be non-variable stars, even though the cluster is overlapped with tons of variable stars.

With these kind of indice (I have multiple indice derived from light-curves), I used a machine learning technique to classify each of the variability. And, a preliminary result is pretty amazing.. It can classify each of class with very high accuracy.

I also have totally different kind of indices I didn't implement yet, so if I use those indice, I guess our algorithm could beat any of previous algorithms with a factor of (at least) ~2. For a specific variability type, maybe the factor would be bigger than 5 or 10.


Nevertheless, I'm exciting now hehe :)

Swim class

I just starts to learn. Well yeah, I don't know how to swim :)
Today was the first class, and... wow.. I'm full now... drank too much water..

update #1. now I can swim from one side to other side without breathing and with only kicking.. well.. because I do not know how to stroke or how to breath T_T..
Anyway, it's still hard for me to finish one-way trip :)

Support Vector Machine

There are several python packages which provide SVM.

LIBSVM, MLPY, PyML, SVM^python

LIBSVM has been included in a lot of other packages to provide SVM. It looks like very powerful library for SVM. However, it is not 'perfectly' and 'clearly' wrapped with python and doesn't provide other classification method except SVM.

PyML seems simple and easy to use, but looks like it is in its beginning stage of development.

So far, MLPY looks most 'useful' package for python users. It provides multiple kernels for SVM and also provides KNN or other classification function. Moreover, it has a function which can calculate accuracy of prediction. Not bad at all. (Actually, LIBSVM has almost identical SVM modules too.)

But, I didn't compare their performance (especially for LIBSVM and MLPY) or didn't do real test yet. I'll update the results soon.

You can download all the packages above from internet. Do Google :)

P.S The above image is from Google image.

update #1: Shit... MLPY looks like not supporting multiclass-classification for SVM..

update #2. I was wrong. PyML has almost all function for SVM. It uses LIBSVM for SVM and also provide KNN function. It just doesn't have a good tutorial document :)

update #3. well.. I'm going to use LIBSVM even though it doesn't provide good python wrapper. I'm implementing a python routine for parameter set search and modified version of cross_validation of LIBSVM.

Python ctypes and Cython

http://cython.org/

Looks promising, especially Cython. I'm going to test both of them.

Update #1. After I tested ctypes with some C shared object which calculates periods of time series, I found ctypes is about 5% slower than pure C. Well, I need to test more, however, it looks very good so far. Only 5% :)

TAOS Delta Scuti Stars

Detected from 2-year TAOS data. Complete list is here :

http://timemachine.iic.harvard.edu/coati/delta/list.html

The paper is published in AJ.

Dae-Won Kim, Pavlos Protopapas, Charles Alcock, Yong-Ik Byun, and et al.

http://www.iop.org/EJ/abstract/1538-3881/139/2/757/

TAOS Flare Stars

Dae-Won Kim, Pavlos Protopapas, Yong-Ik Byun, Charles Alcock, and et al.

http://adsabs.harvard.edu/abs/2009ATel.2035....1K

(This is not a paper.)

Pain in the ass

OK OK.. It's all my fault to upgrade to Snow Leopard, and to be persistent to use 64bit python2.6..

BTW.. Even though how hard I try, I cannot compile matplotlib.. How much hours I have wasted for that.. Numpy, Scipy works just fine after installing them using easy_install.

but.. bloody matplotlib.. shit...

Do I have to use python 2.5 or.. just wait until they correct problems..?

update #1 : There is one solution to install matplotlib.

http://blog.hyperjeff.net/?p=160

Though..

update #2 : OK, fink (new version for Snow Leopard) looks like working well. I'm installing 64 bit python2.6 and all other packages. So far, so good. Nevertheless, Iit's a little bit strange because my experience of fink at Leopard (OS X 10.5) was not that good.

update #3 : R is not ready yet because gcc43 is not available on Snow Leopard. R should change its dependency from gcc43 to gcc44.. hm..

I'm a Ph.D student..

and I didn't know how to open the sink in shower....

OK, the full story is here,
One day I found the shower in my house didn't work, which means water was just sitting there.
So, I poured almost three bottles of clog removers but it still didn't work..
I tried the 'things' which can give pressure to the hole, which is usually used for a toilet.
I tried a thin and strong wire to clean the path of the shower...

I tried everything I could.. and I failed...

After about two weeks of hard trying, I asked my friend if he has thinner and softer wire than I tried, and he came with an wire to help me.

and.. just after 5 minute he's trying.. he just found out that I didn't 'open' the sink...
There was a small switch which can open the skin in shower which I didn't notice before...

After two weeks of hard works.....
The solution was the 'switch'... F*ck.... I spend almost $30 for the clog removers...



P.S. After he fixed the shower, I just realized that I did know how to use that 'switch'..
Because my previous house has same switch, and I used it frequently...

What a stupid.. I just moved in new house, and I forgot everything I'd learned while living in the previous house...? :)

김대중 대한민국 15대 대통령 서거

"행동하지 않는 양심은 악의 편"

답답하구나..

Play Chess

I started to learn Chess. As some of you might know, there is a similar Chinese game called Jang-Ki (장기). I think I'm not that bad player of Jang-Ki but Chess is quite different from it.

Especially, it's a little bit hard to get used to use Queen and Bishop because there are no such pieces moving like that in Jang-Ki.

And, also, Jang-Ki's pieces are moving along the lines. So, I usually build the attack and defense strategy based on the lines. But.. in Chess, pieces are moving along not the lines but the 'area' (I don't know how to exactly explain this...). So, it's a lot confusing to make a strategy.
Moreover, I still don't understand the 'stalemate' rule..

I played Chess with PC several times, and I just won one time... PC's are too good in my standard :)

Nevertheless, I think Chess is quite good game as much as Jang-Ki.

Let's play it!!

I bought Macbook pro today.

The problem is that... I don't have enough time to play with that now. It's still sealed. T_T...
Nevertheless, I'll upload the photos of my macbook soon.

I also got an iPod touch 8G, for free :), through the apple promotion 'Back to School'.
I was planning to sell the iPod to compensate the expenses I used to buy my macbook.
But.. after I had used it for a few days.. I just fell in love with the iPod :)
I can check email, papers, news and etc (including game!!) in my bed.
Of course, I jailbreaked the iPod.

-------------------------------------------------------------------

update #0. essential application : Firefox, Picasa3, Adium, VLC, Growl, smcFanControl, Gmail Notifier + Growl, iStatPro, Xee, NTFS-3G, MacFuse and etc.

update #1. OK don't use fink.. If you want to use it, just use it until installing python, numpy and scipy. Then independently install all other libraries without using fink (e.g. matplotlib, ipython, rpy and R!!!!!!.. piece of shit..)

update #2. OK macport looks not bad. so far so good. BTW, I'm installing R and rpy by myself now. I'm not using macport to install them.

update #3. I installed R and Rpy. Note that you can install any version of R higher than 2.6 on Leopard. During compiling rpy 1.0.3 you will get the error about the Rdevices.h. Just comment the 'include' line in Rpy.h in rpy/src directory. Then it should work.

update #3.1 I installed R 2.9.1 binary package compiled for Leopard. It provides nice GUI but... has some problems. If you run the R using the terminal, it cannot load tcltk library, which means you might not be able to use the GUI. Nevertheless, it doesn't matter for me because I might use R only in python environment :)

update #4. Texshop + BibDesk is quite cool.

update #5. There is no cut & paste in Finder as Window Explorer has...

update #5.1 Path Finder has a function for cut & paste. Nice.

update #6. UntraEdit for Linux/Mac is coming soon. I cannot wait!

update #7. Let's try to use Quicksilver. Everybody says it's a quite nice application.

update #8. Coherence mode of Parallel is awesome.

update #9. There is mac version DiffMerge. Nice.

update #101. wow.. iPod + Remote can control iTune on Mac!!! Awesome..
I don't need to wake up from my bed to turn on/off musics.
I copied about 80GB music files from my friend :)

------------------------------------------------

I have to admit that there are not as much great softwares for Mac as for Window.
So far, in my opinion, only one advantage of Mac is its user-friendly interface.
Nothing more than that. But, that is actually HUGE advantage over Window..
(ah, one more thing. If you use linux all the time, mac is a good choice for you just like for me.
I don't give much credit to Mac's pretty appearance. I prefer functionality than beauty.)

And, I also realized how much the Thinkpad T42, my previous laptop, is well-made laptop :)

Annual CfA BBQ Party

매년 이맘때면 열리는 CfA BBQ 파티!!

열심히 음식 준비중인 자원봉사자(?)들

크리스틴 & 나오미
Mrs. 크 때문에 올해초 비자연장 애 좀 먹었다는 ㅋㅋ

BBQ 파티에 빠지면 안되는.. 맥주!!

그리고 와인 :)

CfA 소장 찰스 아자씨. 명목상 마스터 P.와 더불어 내 지도교수이나...
너무 바쁘신 관계로 자주 보기는 힘들다.

대낮부터 좀 마셔댔더니.. 알딸딸 하더군 ㅋㅋ

2007/06/17