Improved mehtods for weighting and correcting of travel diairies - deliverable 8

ARMOOGUM ; MADRE ; HAN ; POLAK

Type de document
RAPPORT DE RECHERCHE
Langue
anglais
Auteur
ARMOOGUM ; MADRE ; HAN ; POLAK
Résumé / Abstract
From a survey, it is not always possible to directly obtain complete data. There is usually something missing: the household might refuse to answer, a part of the questionnaire might not be returned, some trips omitted, or an item is missing or inconsistent (for instance a too high trip distance or a too short trip duration inducing an unreasonable speed). Two main categories of methods are used to cope with this variety of non-responses: weighting and imputation. After a presentation of the main useful concepts in this field, we will consider these two methods, both theoretically and practically, with examples drawn from a methodological survey (vats) and from the French national personal transportation survey (NPTS). This report presents original methodologies developed for the MEST project and is a synthesis of many papers, which are either presented in the appendices or mentioned in the references., RAPPORT DE CONTRAT

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