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Peer Reviewed
See detailDecision tree approaches to voltage security assessment
Van Cutsem, Thierry ULg; Wehenkel, Louis ULg; Pavella, Mania ULg et al

in IEE Proceedings - Generation, Transmission & Distribution (1993), 140

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See detailDecision tree pruning using an additive information quality measure
Wehenkel, Louis ULg

in Bouchon-Meunier, B; Valverde, L; Yager, R (Eds.) Uncertainty in Intelligent Systems (1993)

An additive quality measure based on information theory is introduced for the inductive inference of decision trees. It takes into account both the information content and the complexity of a tree ... [more ▼]

An additive quality measure based on information theory is introduced for the inductive inference of decision trees. It takes into account both the information content and the complexity of a tree, combined so as to evaluate the tree on the basis of its learning sample. The additivity of the quality measure with respect to the decomposition of a tree into subtrees, allows to formulate an efficient recursive backward pruning algorithm to maximize the quality. Simulation results are provided on the ground of a real life problem related to electric power system operation and a synthetic digit recognition problem. [less ▲]

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See detailDecision Trees and Random Subwindows for Object Recognition
Marée, Raphaël ULg; Geurts, Pierre ULg; Piater, Justus ULg et al

in ICML workshop on Machine Learning Techniques for Processing Multimedia Content (MLMM2005) (2005)

In this paper, we compare five tree-based machine learning methods within a recent generic image classification framework based on random extraction and classification of subwindows. We evaluate them on ... [more ▼]

In this paper, we compare five tree-based machine learning methods within a recent generic image classification framework based on random extraction and classification of subwindows. We evaluate them on three publicly available object recognition datasets (COIL-100, ETH-80, and ZuBuD). Our comparison shows that this general and conceptually simple framework yields good results when combined with ensemble of decision trees, especially when using Tree Boosting or Extra-Trees. The latter is also particularly attractive in terms of computational efficiency. [less ▲]

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See detailDecision Trees and Transient Stability of Electric Power Systems
Wehenkel, Louis ULg; Pavella, Mania ULg

in Automatica (1991), 27(1), 115-134

An inductive inference method for the automatic building of decision trees is investigated. Among its various tasks, the splitting and the stop splitting criteria successively applied to the nodes of a ... [more ▼]

An inductive inference method for the automatic building of decision trees is investigated. Among its various tasks, the splitting and the stop splitting criteria successively applied to the nodes of a grown tree, are found to play a crucial role on its overall shape and performances. The application of this general method to transient stability is systematically explored. Parameters related to the stop splitting criterion, to the learning set and to the tree classes are thus considered, and their influence on the tree features is scrutinized. Evaluation criteria appropriate to assess accuracy are also compared. Various tradeoffs are further examined, such as complexity vs number of classes, or misclassification rate vs type of misclassification errors. Possible uses of the trees are also envisaged. Computational issues relating to the building and the use of trees are finally discussed. [less ▲]

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See detailDecision trees for detecting emergency voltage conditions
Van Cutsem, Thierry ULg; Wehenkel, Louis ULg; Pavella, Mania ULg et al

in Proc. 2nd Intern. workshop on Bulk power system voltage phenomena : voltage stability and security (1991, August)

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See detailA decision-maker point of view on uncertainties in spatial decisions
Cornélis, Bernard ULg; Brunet, Sébastien ULg

in Goodchild, Michael; Fisher, Peter; Shi, Wenzhong (Eds.) Spatial Data Quality (2002)

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See detailLes décisions sociales
Caprasse, Olivier ULg

in Revue de l'Arbitrage (2013), (3), 673-704

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See detailDeclared chronic morbidity after 45 years : Results from a population survey in Belgium
Gosset, Christiane ULg; Cartier, P; De Prins, L et al

Conference (1997)

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See detailDéclin cognitif avec l'âge: Réalité, exagération, ou fiction?
Adam, Stéphane ULg

Scientific conference (2013, April 03)

Detailed reference viewed: 45 (6 ULg)
See detailLes déclinaisons de l'identité en Wallonie. Couplage et divorces entre électorats, appartenances et prises de position en matière communautaire et institutionnelle
Jacquemain, Marc ULg; Vandekeere, Michel; Doutrelepont, René

in Frognier, André-Paul; Aish-Van Vaerenberghe, Anne-Marie (Eds.) Elections, la fêlure : enquête sur le comportant électoral des Wallons et des Francopohnes (1994)

The paper synthesizes how different kinds of national/regional affiliations among frenchspeaking belgian public, measured by surveys can affect their electora behaviour and their policy preferences

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See detailLes déclinatoires de compétence
Moreau, Pierre ULg

in L'instance (2013)

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See detailDecline of antibiotic use in primary care.
Frippiat, Frédéric ULg; Chandrikakumari, Kavitha; Moutschen, Michel ULg

in Lancet Infectious Diseases (2008), 8(5), 272273

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See detailDecline Of Endemic Oncocyclus Irises (Iridaceae) Of Lebanon: Survey And Conservation Needs
Saad, Layla ULg; Talhouk, Salma; Mahy, Grégory ULg

in Oryx (2009), 43(1), 91-96

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See detailThe decline of weorðan in English versus the grammaticalization of werden in German
Petré, Peter ULg

Conference (2010, August 27)

The passive construction consitutes a marked difference between English, which uses the auxiliary be, and German, which uses werden ‘become’. Zieglschmid (1931), however, showed that that originally both ... [more ▼]

The passive construction consitutes a marked difference between English, which uses the auxiliary be, and German, which uses werden ‘become’. Zieglschmid (1931), however, showed that that originally both languages used both verbs. I argue that English lost weorðan (the cognate of werden) when it abandoned the bounded construal of narratives, inherited from Germanic, while German further grammaticalized this system, with the further grammaticalization of werden as a consequence. The original variation is illustrated for Old High German in (2), where sein functions as actional passive auxiliary (next to the frequent occurrence of werden), a choice no longer available in Middle High German (3). Similarly, Old English (4) still has passive weorðan (next to be), but this verb has disappeared from Middle English (5). (1) Latin Ecce aperti sunt ei caeli “See: opened are him:DAT heavens” (Mt. 3.16) (2) Old High German Senu tho aroffonota warun imo himila “See, then opened were him:DAT heavens” (c830) (3) Middle High German Und secht die himel wurden im auf getan “And see the heavens got him:DAT open made” (c1466) (4) Old English & him wurdon þærrihte heofenas ontynede “and him:DAT got immediately heavens opened” (c1025) (5) Middle English and lo! heuenes weren openyd to hym (c1384) I argue that Germanic was a moderately bounded language. Bounded languages construe situations as completed sub-events, emphasizing narrative progress, and make abundant use of time adverbials (Carroll, Stutterheim & Nuese 2004), which split up an event chronologically and often take up the first position in a verb-second system. In German the bounded system became further grammaticalized, for instance through the fixation of the verb-second system. The concomitant grammaticalization of werden is explained by its bounding change-of-state semantics that denotes completed events. In English the bounded system disappears, as can be seen from the heavy decrease of time adverbials of narrative progress (þærrihte ‘immediately’ in (4), but mostly þa ‘then’: Kemenade & Los 2006) and the confusion of verb-second-syntax (Los 2009). Weorðan, being highly entrenched in these constructions, disappears with them. By appealing to the bounded-unbounded distinction, it is thus possible to account for a major difference in the auxiliary system between English and German. References Carroll, Mary, Christiane von Stutterheim & Ralf Nuese. 2004. The language and thought debate: A psycholinguistic approach. In Thomas Pechmann and Christopher Habel (eds.), Multidisciplinary approaches to language production (Trends in Linguistics: Studies and Monographs 157), 183-218. Berlin: Mouton de Gruyter. Kemenade, Ans van & Bettelou Los. 2006. Discourse adverbs and clausal syntax in Old and Middle English. In Ans van Kemenade & Bettelou Los (eds.), The Handbook of the History of English, 224–48. Oxford: Blackwell. Los, Bettelou. 2009. The consequences of the loss of verb-second in English: Information structure and syntax in interaction. English Language and Linguistics 13(1), 97-125. Zieglschmid, A. J. Friedrich. 1931. Werdan and wesan with the passive in various Germanic languages. Germanic Review 6(4). 389-396. [less ▲]

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Peer Reviewed
See detailLe décodage de l’œuvre d’art selon Arsène Soreil
Delhalle, Nancy ULg

in Art&Fact (1989)

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See detailDécoder les hiéroglyphes. De l'antiquité tardive à l'Expédition d'Egypte
Winand, Jean ULg

Book published by Académie royale de Belgique (2014)

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See detailDécoder les nouveaux instruments de gestion de l’enseignement supérieur
Fallon, Catherine ULg

in Charlier Jean Emile, Croché Sarah (Ed.) Contrôler la qualité dans l’enseignement supérieur (2012)

L’européanisation de l’enseignement supérieur a connu une accélération brutale avec le lancement du processus de Bologne, à la fin du XXe siècle. Avec lui, les différences entre les modèles d’enseignement ... [more ▼]

L’européanisation de l’enseignement supérieur a connu une accélération brutale avec le lancement du processus de Bologne, à la fin du XXe siècle. Avec lui, les différences entre les modèles d’enseignement supérieur générés par l’histoire ont été estompées pour multiplier les possibilités d’échanges de professeurs, d’étudiants et de chercheurs. Toutes les universités ne sont pourtant pas ouvertes à n’importe quel étudiant ou chercheur. La standardisation des structures appelle des moyens de différencier les établissements et d’estimer la valeur de la formation offerte par chacun d’eux. Dans un monde ouvert, où les responsables ne se connaissent pas suffisamment, l’assurance qualité devient l’imparable substitut à la confiance. Les textes rassemblés dans ce volume cherchent à instruire le dossier de la qualité en croisant des points de vue contrastés. Loin des discours de la propagande autant que de ceux de la dénonciation, chaque contribution présente des éléments factuels et des analyses qui sont autant de points d’appui proposés à la réflexion. Certains textes sont critiques par rapport à la manière dont l’assurance tend à s’imposer et au projet de société auquel elle est associée, d’autres montrent comment fonctionne concrètement la logistique de l’assurance qualité, ou en quoi elle peut être utile. [less ▲]

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