Nociones elementales de instrucción civica, escritas conforme al programa de la vigente ley de instrucción para las escuelas catolicas

UANL

Comentarios a la ley de enjuiciamiento civil reformada conforme a las bases aprobadas por la ley de, 21 de junio de 1880 y publicada por Real Decreto de 3 de febrero de 1881, con los formularios correspondientes á todos los juicios

UANL

El enjuiciamiento conforme al Código de procedimientos civiles del estado

UANL

Teoría y práctica de la educación y la enseñanza : curso completo y enciclopédico de pedagogía, expuesto conforme a un método rigurosamente didáctico

UANL

Nociones elementales de instrucción cívica, escritas conforme al programa de la vigente ley de instrucción para las escuelas católicas

UANL

Esercizio ragionato sulle declinazioni e coniugazioni conforme allenozioni dell'istradamento al quale va unito ed in fine...

UANL

Curso elemental teórico-práctico de retórica y poética acomodado a la índole de los estudios de la 2a. enseñanza conforme con el programa oficial

UANL

Le testateur et son clone inavoué, le juge : clone difforme ou conforme dans la recherche des intentions du testateur : le juge et l’interprétation des volontés du testateur

Un résumé est également disponible en anglais.

Nouveau Manuel du baccalauréat és sciences: conforme au programme du 7 septembre 1852 partie littéraire

UANL

Teoría y práctica de la redacción de instrumentos públicos, conforme a los códigos y disposiciones vigentes del Distrito Federal

UANL

Le vote par internet à distance : est-il conforme aux exigences du droit électoral québécois et canadien?

"Mémoire présenté à la Faculté des études supérieures en vue de l'obtention du grade de LL.M. en droit option droit des technologies de l'information"

La mediación en Jalisco conforme a la Reforma Procesal Constitucional Penal.

Tesis (Doctor en Derecho) UANL, 2011.

Gravitation conforme

Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal

A Detailed Look at Scale and Translation Invariance in a Hierarchical Neural Model of Visual Object Recognition

The HMAX model has recently been proposed by Riesenhuber & Poggio as a hierarchical model of position- and size-invariant object recognition in visual cortex. It has also turned out to model successfully a number of other properties of the ventral visual stream (the visual pathway thought to be crucial for object recognition in cortex), and particularly of (view-tuned) neurons in macaque inferotemporal cortex, the brain area at the top of the ventral stream. The original modeling study only used ``paperclip'' stimuli, as in the corresponding physiology experiment, and did not explore systematically how model units' invariance properties depended on model parameters. In this study, we aimed at a deeper understanding of the inner workings of HMAX and its performance for various parameter settings and ``natural'' stimulus classes. We examined HMAX responses for different stimulus sizes and positions systematically and found a dependence of model units' responses on stimulus position for which a quantitative description is offered. Interestingly, we find that scale invariance properties of hierarchical neural models are not independent of stimulus class, as opposed to translation invariance, even though both are affine transformations within the image plane.

Translation Invariance in Object Recognition, and Its Relation to Other Visual Transformations

Human object recognition is generally considered to tolerate changes of the stimulus position in the visual field. A number of recent studies, however, have cast doubt on the completeness of translation invariance. In a new series of experiments we tried to investigate whether positional specificity of short-term memory is a general property of visual perception. We tested same/different discrimination of computer graphics models that were displayed at the same or at different locations of the visual field, and found complete translation invariance, regardless of the similarity of the animals and irrespective of direction and size of the displacement (Exp. 1 and 2). Decisions were strongly biased towards same decisions if stimuli appeared at a constant location, while after translation subjects displayed a tendency towards different decisions. Even if the spatial order of animal limbs was randomized ("scrambled animals"), no deteriorating effect of shifts in the field of view could be detected (Exp. 3). However, if the influence of single features was reduced (Exp. 4 and 5) small but significant effects of translation could be obtained. Under conditions that do not reveal an influence of translation, rotation in depth strongly interferes with recognition (Exp. 6). Changes of stimulus size did not reduce performance (Exp. 7). Tolerance to these object transformations seems to rely on different brain mechanisms, with translation and scale invariance being achieved in principle, while rotation invariance is not.