References of "Palm, Rodolphe"
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See detailL'Observatoire de la consommation alimentaire
Claustriaux, Jean-Jacques ULg; Cordier, L.; Duquesne, Brigitte ULg et al

in Vers une politique de qualité, à quel prix ? (2003)

Description de l'utilisation d'une base de données relative aux achats de produits alimentaires effectués par des ménages.

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See detailVers une politique de qualité, à quel prix ?
Claustriaux, Jean-Jacques ULg; Cordier, L.; Duquesne, Brigitte ULg et al

Scientific conference (2003)

Description de l'utilisation d'une base de données relative aux achats de produits alimentaires effectués par des ménages.

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See detailComparaison empirique des estimateurs des taux d'erreur en analyse discriminante
Glele Kakai, R.; Piraux, F.; Fonton, N. H. et al

in Revue de Statistique Appliquée (2003), LI(3), 61-74

Monte Carlo experiments are performed to compare twenty estimators or error rates in discriminant analysis in the case of two populations and linear classification rule. Several distributions (normal, chi ... [more ▼]

Monte Carlo experiments are performed to compare twenty estimators or error rates in discriminant analysis in the case of two populations and linear classification rule. Several distributions (normal, chi-square and beta) have been considered. Estimators eOS (for actual and expected error rate) and eB (for optimal error rate) are the best, except for distributions very different from normal distributions. The e632 estimator is the best non parametric estimator. This estimator is better than parmetric estimators for distributions very different from normal distributions. [less ▲]

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See detailEmpirical comparison of error rate estimators in discriminant analysis
Glele Kakaï, R.; Palm, Rodolphe ULg

Poster (2002, July)

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See detailDevelopment Of A Visual Method To Quantify The Gossypol Content In Cotton Seeds
Benbouza, H.; Lognay, Georges ULg; Palm, Rodolphe ULg et al

in Crop Science (2002), 42(6), 1937-1942

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See detailRépartition des arbres et des volumes par classes de grosseur dans les peuplements de pin d'Alep (Pinus halepensis Mill.) en Tunisie
Sghaier, T.; Palm, Rodolphe ULg

in Annals of Forest Science (2002), 59(3), 293-300

A study of the number and volume of trees by girth classes for Aleppo pine (Pinus halepensis Mill.) in Tunisia carried out using data collected from 348 temporary plots of 4 ares. The standard deviation ... [more ▼]

A study of the number and volume of trees by girth classes for Aleppo pine (Pinus halepensis Mill.) in Tunisia carried out using data collected from 348 temporary plots of 4 ares. The standard deviation, the FISHER coefficient and PEARSON coefficient for the girth distribution were calculated for each plot and related to age, dominant height and mean plot circomference. The resulting relationships were used to estimate the parameters of the girth distribution for each theoretical stand corresponding to one row of the yield tables that were establied from the same plots. The probability density function relative to PEARSON's type I distribution was determined for each theoretical stand. According to this function of density, distribution tables giving the number and the volume of trees (in percent) by girth classes of 10 cm were drawn up. [less ▲]

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See detailConditions d'application et transformations de variables en régression linéaire
Palm, Rodolphe ULg; Iemma, A. F.

in Notes de Statistique et d'Informatique (2002), (1), 1-34

This note first reviews methods used for checking the assumptions in linear regression (lack of fit, normality, homoscedasticity and independance of the residuals) and then describes variables ... [more ▼]

This note first reviews methods used for checking the assumptions in linear regression (lack of fit, normality, homoscedasticity and independance of the residuals) and then describes variables transformations as remedial action when the assumptions are not fulfilled. [less ▲]

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See detailMacros Minitab pour la régression linéaire
Palm, Rodolphe ULg

Software (2002)

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See detailUtilisation du bootstrap pour les problèmes statistiques liés à l'estimation des paramètres.
Palm, Rodolphe ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(3),

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See detailModèle de productivité et tarif de cubage des peuplements de teck (tectona grandis L. F.) au Sud-Bénin
Fonton, N. H.; Palm, Rodolphe ULg; Akossou, A. Y. J. et al

in Annales des Sciences Agronomiques du Bénin (2001), 2(2), 209-224

This study aims to build site index model and stem volume function of pure, even aged and relatively homogeneous teak stands in south Benin. The characteristics of the stands were obtained from the ... [more ▼]

This study aims to build site index model and stem volume function of pure, even aged and relatively homogeneous teak stands in south Benin. The characteristics of the stands were obtained from the inventory of 104 temporary plots sampled from stands with different ages and fertility. The stem analysis of 19 dominant trees wer used to establish, by serial regression, a model giving the evolution of top height according to the age. The site index curves were built in order to determine site index of the stands. The estimated volume function obtained shows that age, site index and basal area are the main stand parameters of stem volume funtion. [less ▲]

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See detailEtude empirique des estimateurs des taux d'erreur en analyse discriminante
Piraux, François; Palm, Rodolphe ULg

in Revue de Statistique Appliquée (2001), XLIX(4), 71-85

Monte Carlo experiments are performed to compare ten parametric and six non parametric estimators of the three error rates (actual, expected and optimal error rate) in discriminant analysis. This ... [more ▼]

Monte Carlo experiments are performed to compare ten parametric and six non parametric estimators of the three error rates (actual, expected and optimal error rate) in discriminant analysis. This comparison is restricted to the context of two p-dimensional normal group conditional distributions with the same covariance matrix. The study shows that certain estimators are markedly superior and users should be warned against some estimators available in statistical softwares. [less ▲]

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See detailL'analyse de la variance multivariée et l'analyse canonique discriminante : principes et applications
Palm, Rodolphe ULg

in Notes de Statistique et d'Informatique (2000), (1), 40

This note describes the principles of multivariate analysis of variance and of canonical discriminant analysis. The methods are illustrated by two examples.

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See detailHipóteses estatísticas : revendo idéias sobre ortogonalidade e balanceamento em análise de varîancia
Iemma, Antonio Francisco; Claustriaux, Jean-Jacques ULg; Palm, Rodolphe ULg

in Multiciência (2000), 4(1), 62-82

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See detailA propos de l'intervalle de confiance des indices d'aptitude Cp et Cpk
Barette, Ph.; Palm, Rodolphe ULg

in XXXIèmes Journées de Statistiques (1999, May)

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See detailInfluence of some experimental factors on the evaluation of the sensitivity of Aphidius rhopalosiphi De Stefani-Perez to phosalone.
Guelton, O.; Mahaut, T.; Deleu, R. et al

in Mededelingen van de Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen (Rijksuniversiteit te Gent) (1999), 64(3a), 41-47

Mead-Briggs (1992) proposed a Iaborarory method to assess the contact toxicity of a pesticide on the cereal aphid parasitoid Aphidius rhopalosiphi De Stefani-Perez. The influence of air moisture ... [more ▼]

Mead-Briggs (1992) proposed a Iaborarory method to assess the contact toxicity of a pesticide on the cereal aphid parasitoid Aphidius rhopalosiphi De Stefani-Perez. The influence of air moisture, photoperiod, sex of insects and storage conditions on the sensitivity of this parasitoid to phosalone was studied. Results sbowed that insect sensitivity is the most influenced by air moisture. The storage conditions of mummies before use seems also to be an important factor. [less ▲]

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