SRGM

Version 1

Version 2

$\rho$

SEOE

$\rho$

SEOE

Goel-Okumoto

0.972

0.4

0.994

0.228

S-shaped

0.967

0.43

0.938

0.735

Musa-Okumoto

0.986

0.28

0.98

0.423

Song’s model

0.894

0.775

0.975

0.469