### Abstract

Lingua originale | English |
---|---|

pagine (da-a) | 51-71 |

Numero di pagine | 21 |

Rivista | International Journal of Agricultural and Environmental Information Systems |

Volume | 3 |

Stato di pubblicazione | Published - 2012 |

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### All Science Journal Classification (ASJC) codes

- Information Systems

### Cita questo

*International Journal of Agricultural and Environmental Information Systems*,

*3*, 51-71.

**A generalization of the orthogonal regression technique for life cycle inventory.** / Cellura, Maurizio; Marvuglia, Antonino; Pucci, Marcello.

Risultato della ricerca: Article

*International Journal of Agricultural and Environmental Information Systems*, vol. 3, pagg. 51-71.

}

TY - JOUR

T1 - A generalization of the orthogonal regression technique for life cycle inventory

AU - Cellura, Maurizio

AU - Marvuglia, Antonino

AU - Pucci, Marcello

PY - 2012

Y1 - 2012

N2 - Life cycle assessment (LCA) is a method used to quantify the environmental impacts of a product, process, or service across its whole life cycle. One of the problems occurring when the system at hand involves processes delivering more than one valuable output is the apportionment of resource consumption and environmental burdens in the correct proportion amongst the products. The mathematical formulation of the problem is represented by the solution of an over-determined system of linear equations. The paper describes the application of an iterative algorithm for the implementation of least square regression to solve this over-determined system directly in its rectangular form. The applied algorithm dynamically passes from an Ordinary Least Squares (OLS) problem to the regression problems known as Total Least Squares (TLS) and Data Least Squares (DLS). The obtained results suggest further investigations. In particular, the so called constrained least squares method is identifed as an interesting development of the methodology.

AB - Life cycle assessment (LCA) is a method used to quantify the environmental impacts of a product, process, or service across its whole life cycle. One of the problems occurring when the system at hand involves processes delivering more than one valuable output is the apportionment of resource consumption and environmental burdens in the correct proportion amongst the products. The mathematical formulation of the problem is represented by the solution of an over-determined system of linear equations. The paper describes the application of an iterative algorithm for the implementation of least square regression to solve this over-determined system directly in its rectangular form. The applied algorithm dynamically passes from an Ordinary Least Squares (OLS) problem to the regression problems known as Total Least Squares (TLS) and Data Least Squares (DLS). The obtained results suggest further investigations. In particular, the so called constrained least squares method is identifed as an interesting development of the methodology.

UR - http://hdl.handle.net/10447/62106

M3 - Article

VL - 3

SP - 51

EP - 71

JO - International Journal of Agricultural and Environmental Information Systems

JF - International Journal of Agricultural and Environmental Information Systems

SN - 1947-3192

ER -