But until 1970s, the nipals ( nonlinear iterative partial least squares ) algorithm had been proposed to realize the ideals of pls regression . as far as the international workshop on pls regression had been hold in france in 1990s, it just was the virtual takeoff to develop the theories and applications of pls rapidly 其基本思想早在20世紀(jì)60年代就出現(xiàn)了,但直至70年代提出的nipals算法,解決了pls算法實現(xiàn)的問題;到了90年代,在法國召開了偏最小二乘回歸國際研討會,才真正有力地促進(jìn)了pls理論和應(yīng)用的發(fā)展。