PPT Slide

MASSIVE (99%), LOSSLESS data compression.

Two numbers y1 and y2 tell you as much about age and number of stars as the entire spectrum. Data compression by a factor of 176.

Opens up the possibility of a spectral classification scheme based on physical parameters (compare principal component analysis)

From 352 pixels

From 2 numbers

Very large data compression possible:

Likelihood of age, number of stars:

Same accuracy achieved