Description Usage Arguments Details Value Author(s) References See Also

View source: R/bidiagpls.fit.R

Bidiagonalization algorithm for PLS1

1 | ```
bidiagpls.fit(X, Y, ncomp, ...)
``` |

`X` |
a matrix of observations. |

`Y` |
a vector. |

`ncomp` |
the number of components to include in the model (see below). |

`...` |
additional arguments. Currently ignored. |

This function should not be called directly, but through `plsFit`

with the argument `method="bidiagpls"`

. It implements the Bidiag2 scores algorithm.

An object of class `mvdareg`

is returned. The object contains all components returned by the underlying fit function. In addition, it contains the following:

`loadings` |
X loadings |

`weights` |
weights |

`D2` |
bidiag2 matrix |

`iD2` |
inverse of bidiag2 matrix |

`Ymean` |
mean of reponse variable |

`Xmeans` |
mean of predictor variables |

`coefficients` |
regression coefficients |

`y.loadings` |
y-loadings |

`scores` |
X scores |

`R` |
orthogonal weights |

`Y` |
scaled response values |

`Yactual` |
actual response values |

`fitted` |
fitted values |

`residuals` |
residuals |

`Xdata` |
X matrix |

`iPreds` |
predicted values |

`y.loadings2` |
scaled y-loadings |

`fit.time` |
model fitting time |

`val.method` |
validation method |

`ncomp` |
number of latent variables |

`contrasts` |
contrast matrix used |

`method` |
PLS algorithm used |

`scale` |
scaling used |

`validation` |
validation method |

`call` |
model call |

`terms` |
model terms |

`model` |
fitted model |

Nelson Lee Afanador ([email protected]), Thanh Tran ([email protected])

Indahl, Ulf G., (2014) The geometry of PLS1 explained properly: 10 key notes on mathematical properties of and some alternative algorithmic approaches to PLS1 modeling. Journal of Chemometrics, 28, 168:180.

Manne R., Analysis of two partial-least-squares algorithms for multi-variate calibration. Chemom. Intell. Lab. Syst. 1987; 2: 187:197.

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