Please use this identifier to cite or link to this item: http://hdl.handle.net/10216/99546
Author(s): João M. Moreira
Carlos Soares
Alípio M. Jorge
Jorge Freire de Sousa
Title: The effect of varying parameters and focusing on bus travel time prediction
Issue Date: 2009
Abstract: Travel time prediction is an important tool for the planning tasks of mass transit and logistics companies. ID this paper we investigate the use of regression methods for the problem of predicting the travel time of buses in a Portuguese public transportation company. More specifically, we empirically evaluate the impact of varying parameters on the performance of different regression algorithms, such as support vector machines (SVM), random forests (RF) and projection pursuit, regression (PPR). We also evaluate the impact of the focusing tusks (example selection; domain value definition and feature selection) in the accuracy of those algorithms. Concerning the algorithms, we observe that 1) RF is quite robust to the choice of parameters and focusing methods: 2) the choice of parameters for SVM can be made independently of focusing methods while 3) for PPR they should be selected simultaneously. For the focusing methods, we observe that a stronger effect is obtained using example selection, particularly in combination with SVM.
Subject: Tecnologia do transporte rodoviário, Inteligência artificial, Ciências da computação e da informação
Road transport technology, Artificial intelligence, Computer and information sciences
URI: http://hdl.handle.net/10216/99546
Source: Advances in Knowledge Discovery and Data Mining
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FCUP - Artigo em Livro de Atas de Conferência Internacional
FEUP - Artigo em Livro de Atas de Conferência Internacional
FEP - Artigo em Livro de Atas de Conferência Internacional

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