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Quasi-regression is introduced for approximation of functions on the unit
cube in s dimensions. It is computationally ecient, compared to kriging,
for problems requiring a large number of function ...
We show in an idealized model that the narrow sense (linear) heritability from d autosomal SNPs can be estimated without bias from n independently sampled individuals, by a method of moments strategy ...
Quasi-Regression主要用于解决高维空间的函数逼近问题.虽然这种方法的计算效率非常高,但拟合精度依赖于标量系数的估计.在正交基的线性组合中，选择Quasi-Regression标量系数的最小方差的无偏估计量，从而得到标量系数的新统计量，使得拟合函数的期望由原来的O(p/ｎ)减少到O(p/ｎ２).