EXAFS

a, b a c, d c, d b b

a b c d

X (EXAFS: Extended X-ray Absorption Fine Structures) X

[1] EXAFS X X

EXAFS

BL11

EXAFS

EXAFS

j

(1) Rj

EXAFS

(1) (2)

LASSO (Least Absolute

Shrinkage and Selection Operator) [2] LASSO

[1]. B. K. Teo (Ed.), EXAFS: Basic Principles and Data Analysis, Springer, 1986.

[2]. R. Tibshirani, J. Roy. Stat. Soc. B, 58, 267 (1996).

: EXAFS