[Retracted] Identification of Tumor Tissue of Origin with RNA-Seq Data and Using Gradient Boosting Strategy

Algorithm 1: Gradient boosting.

Initialization. Initialize with .

For to :

Perform updates:

  (1) Compute pseudo residual:

  (2) Find the parameters of the beat weak learner:

  (3) Choose the step-size by line search:

  (4) Update the model

Output

Algorithm 1: Gradient boosting.