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See detailLa régression linéaire pondérée : principes et application
Palm, Rodolphe ULg

in Notes de Statistique et d'Informatique (1994), 4

This note briefly describes the prinicples of weighted linear regression and gives two completely worked out examples from the real world.

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See detailLa régression logistique avec Minitab
Palm, Rodolphe ULg; Brostaux, Yves ULg

in Notes de Statistique et d'Informatique (2011), (4), 15

This note describes the Minitab commands BLOGISTIC, NLOGISTIC and OLOGISTIC and proposes a macro, which can be downloaded, for coding the data in order to fit the continuation-ratio logits model. The ... [more ▼]

This note describes the Minitab commands BLOGISTIC, NLOGISTIC and OLOGISTIC and proposes a macro, which can be downloaded, for coding the data in order to fit the continuation-ratio logits model. The commands are illustrated by an example. [less ▲]

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See detailLa régression logistique binaire
Duyme, F.; Claustriaux, Jean-Jacques ULg

in Notes de Statistique et d'Informatique (2006), (4), 1-24

This note describes and illustrates the principles of binary logistic regression when predictors are continuous variables.

Detailed reference viewed: 45 (13 ULg)
See detailRégression logistique robuste
Croux, Christophe ULg; Haesbroeck, Gentiane ULg

in Droesbeke, J. J.; Lejeune, M.; Saporta, G. (Eds.) Modèles statistiques pour données qualitatives (2001)

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See detailRégression multiple et prévision de rendements agricoles en fonction de données météorologiques
Dagnelie, Pierre; Palm, Rodolphe ULg

in Asselin, B.; Boniface, M.; Duby, C. (Eds.) et al Biométrie et Analyse de données spatio-temporelles (1993)

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See detailRegression on fixed-rank positive semidefinite matrices: a Riemannian approach
Meyer, Gilles ULg; Bonnabel, Silvère; Sepulchre, Rodolphe ULg

in Journal of Machine Learning Research (2011), 12(Feb), 593625

The paper addresses the problem of learning a regression model parameterized by a fixed-rank positive semidefinite matrix. The focus is on the nonlinear nature of the search space and on scalability to ... [more ▼]

The paper addresses the problem of learning a regression model parameterized by a fixed-rank positive semidefinite matrix. The focus is on the nonlinear nature of the search space and on scalability to high-dimensional problems. The mathematical developments rely on the theory of gradient descent algorithms adapted to the Riemannian geometry that underlies the set of fixed-rank positive semidefinite matrices. In contrast with previous contributions in the literature, no restrictions are imposed on the range space of the learned matrix. The resulting algorithms maintain a linear complexity in the problem size and enjoy important invariance properties. We apply the proposed algorithms to the problem of learning a distance function parameterized by a positive semidefinite matrix. Good performance is observed on classical benchmarks. [less ▲]

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See detailRégression quantile bayesienne
Dardenne, Nadia ULg

Master's dissertation (2009)

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See detailRegrets apres sterilisation tubaire
Nervo, Patricia ULg; Bawin, L.; Foidart, Jean-Michel ULg et al

in Journal de Gynécologie, Obstétrique et Biologie de la Reproduction (2000), 29(5), 485-91

OBJECTIVE: To examine thoroughly the profile and motivations of a group of women who regretted sterilization so much that they were prepared to undergo reversal microsurgery or in vitro fertilization ... [more ▼]

OBJECTIVE: To examine thoroughly the profile and motivations of a group of women who regretted sterilization so much that they were prepared to undergo reversal microsurgery or in vitro fertilization treatment. MATERIAL: and methods. The study followed one hundred women from their first consultation for a period of 3 years in order to analyze the outcome of their initial decision. RESULTS: Analysis of the circumstances at the time of the sterilization indicate 3 main factors which later caused the women to regret the decision Three years after the initial consultation, 69% of the patients have withdrawn from further investigation and /or treatment for different reasons analyzed in this study. 17 of the patients have undergone reversal microsurgery and 14 have attempted one or more in vitro fertilization treatments. Of these 31 patients, 12 (38.7%) have given birth to at least one child. CONCLUSION: These results sufficiently prove that tubal sterilization is worthy of consideration as much by the patient as by the physician as a method of irreversible contraception despite the developments in tubal microsurgery or in medically assisted procreation. [less ▲]

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See detailRegroupement de traitements: il faut être conscient du risque
Seutin, Benoit ULg; Vancutsem, Françoise ULg; Bodson, Bernard ULg

in Livre Blanc: Céréales - Gembloux (2010, February 24)

Les mélanges de produits phytosanitaires avec la solution azotée au 1er noeud - Les mélanges de fongicides ou d'herbicide avec le régulateur au 2ème noeud - Les mélanges fongicides et Allié à la dernière ... [more ▼]

Les mélanges de produits phytosanitaires avec la solution azotée au 1er noeud - Les mélanges de fongicides ou d'herbicide avec le régulateur au 2ème noeud - Les mélanges fongicides et Allié à la dernière feuille [less ▲]

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See detailRegular compactly supported wavelets in Sobolev spaces
Bastin, Françoise ULg; Laubin, P.

in Duke Mathematical Journal (1997), 87(3), 481-508

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See detailRegular events in travel behaviour research: setup of a longitudinal websurvey
Cools, Mario ULg; Moons, Elke; Wets, Geert

Conference (2006)

One of the leading paradigms in modern travel behaviour research is the activity based approach, which considers travel as a derivative from the activities that individuals and households need or wish to ... [more ▼]

One of the leading paradigms in modern travel behaviour research is the activity based approach, which considers travel as a derivative from the activities that individuals and households need or wish to perform. Longitudinal designs provide the required framework for a better understanding of the dynamics of travel behaviour. Longitudinal data can be used to analyze behavioural adjustments some time before (response leads) or after (response lags) the occurrence of an event, or for instance to analyze routine behaviour. The questionnaire used to collect the data will be an activity diary. The respondents are asked to fill in all their activities performed that day. The diaries have to be filled in at least twice a week. These moments are randomly selected, but in weeks when a special event occurs, the days around this special event are questioned as well. Performing a longitudinal study has certain drawbacks however. The respondent burden can cause different side-effects, such as panel attrition, decreasing representativeness and, reporting errors. Thus, next to refreshing the sample regularly, trying to keep the respondents motivated is essential. A first step in lowering the respondent burden is to make the activity diaries user-friendly. An internetbased questionnaire makes interaction with respondents possible. The respondent’s current results can be graphically displayed (e.g. geographical map of activity-pattern), potentially awakening or strengthening the interest in the study. Logical rules (e.g. two activities on two different locations require a trip in between) can be formulated, and the interaction with the respondents allows the researcher to get feedback on “strange” answers, or on missing values, thus improving the data quality. This paper describes some potential paths to minimise sample attrition (e.g. internet-based interaction with respondents) and ways to refresh the sample. These findings are applied to the study of travel behaviour of Flemish households around school holidays. [less ▲]

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See detailRegular Modes in Rapidly Rotating Stars
Pasek, Mickael; Georgeot, Bertrand; Lignières, François et al

in Suárez, Juan Carlos; Garrido, Rafael; Balona, Luis A. (Eds.) et al Stellar Pulsations (2013)

Rapid rotation has to date prevented reliable mode identification in most intermediate to massive pulsating stars. In this contribution we show how an asymptotic method for pressure modes predicts regular ... [more ▼]

Rapid rotation has to date prevented reliable mode identification in most intermediate to massive pulsating stars. In this contribution we show how an asymptotic method for pressure modes predicts regular frequency spacings in the spectrum of rapidly rotating stars. We give a semi-analytical formula for these spacings that is in good agreement with numerically computed high-frequency modes. This should help to extract from observed spectra important information on the structure of rapidly rotating stars. [less ▲]

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See detailRegular oscillation sub-spectrum of rapidly rotating stars
Pasek, M.; Lignières, F.; Georgeot, B. et al

in Astronomy and Astrophysics (2012), 546

<BR /> Aims: We present an asymptotic theory that describes regular frequency spacings of pressure modes in rapidly rotating stars. <BR /> Methods: We use an asymptotic method based on an approximate ... [more ▼]

<BR /> Aims: We present an asymptotic theory that describes regular frequency spacings of pressure modes in rapidly rotating stars. <BR /> Methods: We use an asymptotic method based on an approximate solution of the pressure wave equation constructed from a stable periodic solution of the ray limit. The approximate solution has a Gaussian envelope around the stable ray, and its quantization yields the frequency spectrum. <BR /> Results: We construct semi-analytical formulas for regular frequency spacings and mode spatial distributions of a subclass of pressure modes in rapidly rotating stars. The results of these formulas are in good agreement with numerical data for oscillations in polytropic stellar models. The regular frequency spacings depend explicitly on internal properties of the star, and their computation for different rotation rates gives new insights on the evolution of mode frequencies with rotation. [less ▲]

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See detailRegular-to-Chaotic Tunneling Rates: From the Quantum to the Semiclassical Regime
Loeck, Steffen; Baecker, Arnd; Ketzmerick, Roland et al

in Physical Review Letters (2010), 104(11), 114101

We derive a prediction of dynamical tunneling rates from regular to chaotic phase-space regions combining the direct regular-to-chaotic tunneling mechanism in the quantum regime with an improved resonance ... [more ▼]

We derive a prediction of dynamical tunneling rates from regular to chaotic phase-space regions combining the direct regular-to-chaotic tunneling mechanism in the quantum regime with an improved resonance-assisted tunneling theory in the semiclassical regime. We give a qualitative recipe for identifying the relevance of nonlinear resonances in a given h regime. For systems with one or multiple dominant resonances we find excellent agreement to numerics. [less ▲]

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See detailRégularité de la fonction de Cantor
Simons, Laurent ULg; Nicolay, Samuel ULg

Scientific conference (2013, January 28)

La fonction de Cantor, bijection entre $[0,1]$ et $[0,1]^2$, est définie via les fractions continues. Par conséquent, il est assez difficile d'avoir une quelconque intuition sur son comportement. Le but ... [more ▼]

La fonction de Cantor, bijection entre $[0,1]$ et $[0,1]^2$, est définie via les fractions continues. Par conséquent, il est assez difficile d'avoir une quelconque intuition sur son comportement. Le but de cet exposé est de présenter cette fonction particulière ainsi que sa régularité (continuité et régularité höldérienne). [less ▲]

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See detailLa régularité des offres : le point de vue du soumissionnaire
Durviaux, Ann-Lawrence ULg; Delvaux, Thierry ULg

in Marchés et Contrats Publics = Overheidsopdrachten en -Overeenkomsten (2012), 2012/3(2012/3), 313-323

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See detailRégularité/opacité chez Bernard Vargaftig
Purnelle, Gérald ULg

in Formes poétiques contemporaines (2005), 3

Detailed reference viewed: 9 (2 ULg)