Fred Whipple's tie collections

From auction held at CfA Christmas party.

Won by only $30!! :)

For those who don't know Fred Whipple : http://en.wikipedia.org/wiki/Fred_Lawrence_Whipple

QSO (Quasar, AGN) Selection Using Time Variability and Machine Learning

The first work of its kind using machine learning technique to select QSOs using their variability and application of it to massive astronomical database, the MACHO database.

Dae-Won Kim, Pavlos Protopapas, Charles Alcock, Yong-Ik Byun, and Roni Khardon

astroph : http://arxiv.org/abs/1101.3316

accepted for the publication at ApJ.

tags : QSO, quasar, quasi-stellar object, AGN, light curve, time series, time varying, variability, support vector machine, SVM, machine learning, data mining, massive database, classification, variable stars, X-ray, Spitzer SAGE, Large Magellanic Cloud, LMC