Descripteur
Termes IGN > mathématiques > statistique mathématique
statistique mathématique
Commentaire :
>>
biométrie,
échantillonnage (statistique), probabilité, statistique. >>Terme(s) spécifique(s) : analyse de régression, analyse de variance, analyse des données, analyse multivariée, analyse séquentielle, calcul d'erreur, carré latin, corrélation (statistique), efficacité asymptotique (statistique), fonction pseudo-aléatoire, loi des grands nombres, modèle linéaire (statistique), modèle non linéaire (statistique), moindre carré, physique statistique, plan d'expérience, rang et sélection (statistique), rupture (statistique), SAS (logiciel), série chronologique, statistique non paramétrique, statistique robuste, tableau de contingence, test d'hypothèses (statistique), statistique stellaire. Equiv. LCSH : Mathematical statistics. Domaine(s) : 510. |
Documents disponibles dans cette catégorie (6085)
![](./images/expand_all.gif)
![](./images/collapse_all.gif)
Etendre la recherche sur niveau(x) vers le bas
Preliminary study on the assessment of deadwood volume by the French national forest inventory / Rémi Teissier du Cros in Annals of Forest Science, Vol 66 n° 3 (April - May 2009)
![]()
[article]
Titre : Preliminary study on the assessment of deadwood volume by the French national forest inventory Titre original : Étude préliminaire de l'évaluation du volume de bois mort à l'Inventaire forestier national français Type de document : Article/Communication Auteurs : Rémi Teissier du Cros, Auteur ; Sandra Lopez, Auteur Année de publication : 2009 Article en page(s) : n° 302 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] bois mort
[Termes IGN] échantillonnage (statistique)
[Termes IGN] étude préliminaire
[Termes IGN] Inventaire Forestier National (organisme France)
[Termes IGN] placette d'échantillonnage
[Vedettes matières IGN] Inventaire forestierRésumé : (auteur) As the French national forest inventory does not currently monitor the lying compartment of the forest deadwood, the figures obtained on this topic are therefore partial. This study provides cost estimates and guidelines for assessing stumps, and standing and lying deadwood. Comparisons were made between a fixed-area sampling method and a line-intersect one. LIS was judged more time-efficient, especially in dense understorey. Computer simulations were performed in order to estimate the gain in precision with increasing transect lengths. The results showed a continuous improvement in precision associated with increases in transect length. The longest transect tested (50 m) still had a large coefficient of variation, suggesting that improvement in precision at the plot level could still be gained with longer transects. Therefore, from a practical standpoint in terms of fieldwork, we suggest that on a national scale lying deadwood should be measured by line-intersect sampling, whereas stumps, standing dead trees and snags can be monitored using standard fixed-area plots. To meet needs at the national level, we consider that local imprecision could be compensated for by the large number of plots measured each year. Numéro de notice : A2009-705 Affiliation des auteurs : IFN (1958-2011) Thématique : FORET Nature : Article DOI : 10.1051/forest/2009007 Date de publication en ligne : 07/04/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/03/f07196/f07196.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72057
in Annals of Forest Science > Vol 66 n° 3 (April - May 2009) . - n° 302[article]Radiosonde humidity bias correction over the West African region for the special AMMA reanalysis at ECMWF / Anna Agustí‐Panareda in Quarterly Journal of the Royal Meteorological Society, vol 135 n° 640 (April 2009 part A)
![]()
[article]
Titre : Radiosonde humidity bias correction over the West African region for the special AMMA reanalysis at ECMWF Type de document : Article/Communication Auteurs : Anna Agustí‐Panareda, Auteur ; Drasko Vasiljevic, Auteur ; Anton Beljaars, Auteur ; Olivier Bock , Auteur ; Françoise Guichard, Auteur ; et al., Auteur
Année de publication : 2009 Projets : AMMA & AMMA-2 / Janicot, Serge Article en page(s) : pp 595 - 617 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] Afrique (géographie physique)
[Termes IGN] erreur systématique
[Termes IGN] mousson
[Termes IGN] radiosondage
[Termes IGN] teneur en vapeur d'eauRésumé : (auteur) During the African Monsoon Multidisciplinary Analysis (AMMA) field experiment in 2006 there was a large increase in the number of radiosonde data over West Africa. This has the potential of improving the numerical weather prediction (NWP) analysis/forecast and the water budget studies over that region. However, it is well known that the humidity from radiosondes can have some errors depending on sonde type, relative humidity (RH), temperature and the age of the sensor and can give rise to dry biases that are typically between 5% and 30% for RH. Three main sonde types were used in the AMMA field experiment: Vaisala RS80A, Vaisala RS92 and MODEM. In this article, a new empirical method is presented by using the operational European Centre for Medium‐Range Weather Forecasts (ECMWF) short‐range forecast as an intermediary dataset for computing biases. The validation of the correction method using global positioning system (GPS) total columnar water vapour (TCWV) confirms that the method is able to correct for a large part of the dry biases associated with the different sonde types. Results from analysis experiments show how the correction of humidity is particularly important in the West African region due to its impact on the development of convection in NWP models. The proposed radiosonde humidity bias correction has been applied to the special AMMA reanalysis experiment performed at ECMWF for the 2006 West African wet monsoon season. This is expected to benefit a wide number of AMMA‐related studies that make use of the reanalysis, in particular those focusing on the water cycle. Numéro de notice : A2009-574 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1002/qj.396 Date de publication en ligne : 23/03/2009 En ligne : https://doi.org/10.1002/qj.396 Format de la ressource électronique : URL bulletin Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96190
in Quarterly Journal of the Royal Meteorological Society > vol 135 n° 640 (April 2009 part A) . - pp 595 - 617[article]Star plots: how shape characteristics influence classification tasks / Alexander Klippel in Cartography and Geographic Information Science, vol 36 n° 2 (April 2009)
![]()
[article]
Titre : Star plots: how shape characteristics influence classification tasks Type de document : Article/Communication Auteurs : Alexander Klippel, Auteur ; F. Hardisty, Auteur ; C. Weaver, Auteur Année de publication : 2009 Article en page(s) : pp 149 - 163 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie thématique
[Termes IGN] analyse multivariée
[Termes IGN] classification
[Termes IGN] sémiologie graphique
[Termes IGN] symbole graphiqueRésumé : (Auteur) Our research addresses the question of how to design interfaces for spatial analysis such that they support cognitive processes. In this paper, we specifically target the question of map symbol design for the analysis of multivariate data, which is a common problem in cartography and related fields. We focus on star plots and the largely unaddressed question of how to assign variables to rays in a star plot and which consequences specific shapes haveas the result of data characteristics and the assignment of variables to rayson interpretation and classification. We conducted an experiment with two conditions that were designed to shed light on the question: Does the shape of a star plot influence the interpretation (meaning) of the data it represents in a classification task? While previous research on multivariate point symbols has addressed this question for Chernoff faces, for example, few connections have been made to the shape of a star plot and its potential influence on meaning. We found that certain salient shape characteristics induced by variations along the horizontal and vertical axis increase the classification speed. However, we also found that salient shapes, such as has one spike, introduce a perceptual similarity that overrides the assumed similarities in the meaning of the represented data. Copyright CaGISociety Numéro de notice : A2009-164 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1559/152304009788188808 En ligne : https://doi.org/10.1559/152304009788188808 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29794
in Cartography and Geographic Information Science > vol 36 n° 2 (April 2009) . - pp 149 - 163[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 032-09021 RAB Revue Centre de documentation En réserve L003 Disponible The effects of quality control on decreasing error propagation in the LandScan USA population distribution model: a case study of Philadelphia County / L. Patterson in Transactions in GIS, vol 13 n° 2 (April 2009)
![]()
[article]
Titre : The effects of quality control on decreasing error propagation in the LandScan USA population distribution model: a case study of Philadelphia County Type de document : Article/Communication Auteurs : L. Patterson, Auteur ; M. Urban, Auteur ; A. Myers, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 215 - 228 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] contrôle qualité
[Termes IGN] démographie
[Termes IGN] détection de changement
[Termes IGN] géostatistique
[Termes IGN] image à moyenne résolution
[Termes IGN] Philadelphie
[Termes IGN] propagation d'erreur
[Termes IGN] répartition géographiqueRésumé : (Auteur) LandScan USA is a 90 m population distribution model that is used for a variety of applications, including emergency management. Models should have a measure of accuracy; however, the accuracy of population distribution models is difficult to determine due to the inclusion of multiple input datasets and the lack of quantifiable, observable (validated) data to confirm model output. Validated data enables quantification of: (1) overall model accuracy and (2) changes in model output at different levels of quality control. This article examines the effect of quality control for two national school datasets incorporated as input in LandScan USA for Philadelphia County, Pennsylvania; which had a local, validated school dataset available. The effect of each stage of quality control efforts utilized throughout the LandScan USA process were assessed to determine what level of quality control was required to have a statistically significant change of the model's population distribution. The typical level of quality control for LandScan USA resulted in 36% of schools being moved to the correct location and 20% of missing student enrollments were found, compared to 87% and 98% respectively for the validated dataset. The costs of increasing quality control resulted in a six-fold increase in labor time; however, the additional quality control did not produce statistically significant improvements in the LandScan USA model. Thus, typical quality control efforts for schools in LandScan USA produced a population distribution similar to the validated level of quality control, and can be applied with confidence for policy, planning, and emergency situations. Copyright Blackwell Publishing Numéro de notice : A2009-542 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2009.01148.x En ligne : https://doi.org/10.1111/j.1467-9671.2009.01148.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30171
in Transactions in GIS > vol 13 n° 2 (April 2009) . - pp 215 - 228[article]Amélioration de la carte d'occupation du sol par la fusion d'images satellitaires multi-échelle : Application au milieu urbain et périurbain de la région / R. Khedam in Revue internationale de géomatique, vol 19 n° 1 (mars – mai 2009)
![]()
[article]
Titre : Amélioration de la carte d'occupation du sol par la fusion d'images satellitaires multi-échelle : Application au milieu urbain et périurbain de la région Type de document : Article/Communication Auteurs : R. Khedam, Auteur ; A. Bouakache, Auteur ; N. Abbas, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 67 - 92 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] Alger
[Termes IGN] carte d'occupation du sol
[Termes IGN] fusion d'images
[Termes IGN] image à basse résolution
[Termes IGN] image à haute résolution
[Termes IGN] image multidimensionnelle
[Termes IGN] milieu urbain
[Termes IGN] périphérie urbaine
[Termes IGN] théorie de Dempster-ShaferRésumé : (Auteur) L'objectif du travail présenté dans cet article est l'amélioration de la carte d'occupation du sol, en exploitant l'information spectrale des images à basse résolution spatiale et l'information spatiale des images à haute résolution spatiale. Pour cela, nous proposons une méthodologie de fusion multi-échelle basée sur la théorie de l'évidence de Dempster-Shafer qui permet la modélisation de l'ambiguïté et de l'imprécision entre les classes thématiques multi-échelles. L'approche présentée est testée en utilisant deux images satellitaires multi-échelles couvrant le milieu urbain et périurbain de la région d'Alger. Le résultat obtenu est une carte thématique plus riche en informations spectrale et spatiale par rapport à la carte obtenue par une approche de classification monosource. Copyright Lavoisier Numéro de notice : A2009-081 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.3166/geo.19.67-92 En ligne : https://doi.org/10.3166/geo.19.67-92 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29711
in Revue internationale de géomatique > vol 19 n° 1 (mars – mai 2009) . - pp 67 - 92[article]Réservation
Réserver ce documentExemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 047-09011 RAB Revue Centre de documentation En réserve L003 Disponible 047-09012 RAB Revue Centre de documentation En réserve L003 Disponible An adaptive approach to topographic feature extraction from Digital Terrain Models / Y. Song in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 3 (March 2009)
PermalinkAutomated urban land use and land classification for mesoscale atmospheric modeling over cities / André Leroux in Geomatica, vol 63 n° 1 (March 2009)
PermalinkBiomass component equations for Latin American species and groups of species / José Návar in Annals of Forest Science, Vol 66 n° 2 (march 2009)
PermalinkCarto-Som: Cartogram creation using self-organizing maps / R. Henriques in International journal of geographical information science IJGIS, vol 23 n°3-4 (march - april 2009)
PermalinkContinuous K-nearest neighbor query for moving objects with uncertain velocity / Y. Huang in Geoinformatica, vol 13 n° 1 (March 2009)
PermalinkEstimation de l'évolution de l'artificialisation des terres à l'échelle départementale par télédétection : le cas de l'Ille et Vilaine / Rahim Aguejdad in Photo interprétation, European journal of applied remote sensing, vol 45 n° 1 (mars 2009)
PermalinkExploring spatially prioritized parameters of Feng-Shui from tomb footprint / J. Um in International journal of geographical information science IJGIS, vol 23 n°3-4 (march - april 2009)
PermalinkIGS contribution to the ITRF / Zuheir Altamimi in Journal of geodesy, vol 83 n° 3-4 (March - April 2009)
PermalinkIntégration de l'analyse multidimensionnelle dans la gestion d'un réseau d'auscultation géométrique / A. Derkaoui in XYZ, n° 118 (mars - mai 2009)
PermalinkPan-European forest/non forest mapping with Landsat ETM+ and Corine Land Cover 2000 data / A. Pekkarinen in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 2 (March - April 2009)
PermalinkProperties of boundary-line release criteria in North American tree species / Bryan A. Black in Annals of Forest Science, Vol 66 n° 2 (march 2009)
PermalinkSpatiotemporal analysis of rural-urban land conversion / B. Huang in International journal of geographical information science IJGIS, vol 23 n°3-4 (march - april 2009)
PermalinkMapping vegetated wetlands of Alaska using L-band radar satellite imagery / Jane Whitcomb in Canadian journal of remote sensing, vol 35 n° 1 (February 2009)
PermalinkPerformance of stereoradargrammetric methods applied to spaceborne monostatic-bistatic synthetic aperture radar / Alfredo Renga in IEEE Transactions on geoscience and remote sensing, vol 47 n° 2 (February 2009)
PermalinkPotential productivity of forested areas based on a biophysical model. A case study of a mountainous region in northern Spain / Raquel Benavides in Annals of Forest Science, Vol 66 n° 1 (January - February 2009)
PermalinkA radiometric aerial triangulation for the equalization of digital aerial Images and orthoimages / Laure Chandelier in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 2 (February 2009)
PermalinkUnsing spatial continuity and discontinuity information to retrieve geographic entities / Z. Xie in Geocarto international, vol 24 n° 1 (February - March 2009)
PermalinkAirborne lidar feature selection for urban classification using random forests / Nesrine Chehata (2009)
PermalinkAn automated method of scale selection and sheet configuration for multiple sheet census maps with Insets / W.G. Thompson in Cartography and Geographic Information Science, vol 36 n° 1 (January 2009)
PermalinkAn improved fuzzy Kappa statistic that accounts for spatial autocorrelation / Alex Hagen-Zanker in International journal of geographical information science IJGIS, vol 23 n° 1-2 (january 2009)
PermalinkApplication of spectral decomposition algorithm for mapping water quality in a turbid lake (Lake Kasumigaura, Japan) from Landsat TM data / Y. Oyama in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 1 (January - February 2009)
PermalinkApprentissage automatique des classes d'occupation du sol et représentation en mots visuels des images satellitaires / Marie Lauginie Lienou (2009)
PermalinkPermalinkAssessing Spatial Data Infrastructure policy strategies using the multi-actor multi-criteria analysis / T. Geudens in International Journal of Spatial Data Infrastructures Research, vol 4 (Year 2009)
![]()
PermalinkAutomatic estimation of fine terrain models from multiple high-resolution satellite images / Nicolas Champion (2009)
![]()
PermalinkAutonomous integrity: an error isotropy-based approach for multiple fault conditions / M. Azaola-Saenz in Inside GNSS, Vol 4 n° 1 (January-Fabruary 2009)
![]()
PermalinkCalibrage de quelques modèles de géoide dans la zone des collines Albanes (Rome) / Valerio Baiocchi in Géomatique expert, n° 66 (01/01/2009)
PermalinkPermalinkPermalinkConsideration of time-correlated errors in a Kalman filter applicable to GNSS / M.G. Potovello in Journal of geodesy, vol 83 n° 1 (January 2009)
PermalinkCounting equivalent correlators: quantifying the number for GNSS acquisition engine architectures / A. Genghi in GPS world, vol 20 n° 1 (January 2009)
PermalinkDétection et caractérisation de la végétation en milieu urbain à partir d'images aériennes haute résolution / Corina Iovan (2009)
PermalinkDetection of buildings at airport sites using images and lidar data and a combination of various methods / N. Demir (2009)
PermalinkDetection of multi-scale clusters in network space / S. Shiode in International journal of geographical information science IJGIS, vol 23 n° 1-2 (january 2009)
PermalinkPermalinkEstimating sea floor dynamics in the southern North Sea to improve bathymetric survey planning / L. Dorst (2009)
PermalinkEvaluation automatique de connaissances par la théorie des fonctions de croyance [diaporama] / Patrick Taillandier (2009)
PermalinkFeature reduction using a singular value decomposition for the iterative guided spectral class rejection hybrid classifier / R. Philipps in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 1 (January - February 2009)
PermalinkGeostastical modeling of sedimentological parameters using multi-scale terrain variables: application along the Belgian part of the North sea / Els Verfaillie in International journal of geographical information science IJGIS, vol 23 n° 1-2 (january 2009)
PermalinkPermalinkImpact of the network effect on the origin and scale: case study of Satellite Laser Ranging / Xavier Collilieux (2009)
PermalinkPermalinkA kernel density estimation method for networks, its computational method and a GIS-based tool / Atsuyuki Okabe in International journal of geographical information science IJGIS, vol 23 n° 1-2 (january 2009)
PermalinkPermalinkA multi-directional ground filtering algorithm for airborne LIDAR / X. Meng in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 1 (January - February 2009)
Permalink