| BSIR | Batch SIR method. This method can estimate batch dimension reduction. |
| bsir_batch_data | Batch SIR method. This method can estimate batch dimension reduction. |
| OPCA | Online PCA method. This method can estimate online eigen space. |
| opca_online_data | Online PCA method. This method can estimate online eigen space. |
| OSIRgd | OSIR Gradient Descent method. This method can estimate online dimension reduction. |
| OSIRpd | OSIR Perturbation method. This method can estimate online dimension reduction. |
| osir_gd_data | OSIR Gradient Descent method. This method can estimate online dimension reduction. |
| osir_pd_data | OSIR Perturbation method. This method can estimate online dimension reduction. |