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Geocoding crime and a first estimate of a minimum acceptable hit rate / J.H. Ratcliffe in International journal of geographical information science IJGIS, vol 18 n° 1 (january - february 2004)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 18 n° 1 (january - february 2004) . - pp 61 - 72 Titre : Geocoding crime and a first estimate of a minimum acceptable hit rate Type de document : Article/Communication Auteurs : J.H. Ratcliffe, Auteur Année de publication : 2004 Article en page(s) : pp 61 - 72 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG [Termes IGN] données statistiques [Termes IGN] géocodage [Termes IGN] géopositionnement [Termes IGN] infraction [Termes IGN] méthode de Monte-Carlo [Termes IGN] outil d'aide à la décision [Termes IGN] système d'information géographique Résumé : (Auteur) Spatial crime analysis relies not only on accurate geocoding but also the achievement of a high level of geocoding success. Geocoding is the task of converting locations, such as the addresses of burglary victims, into grid coordinates and is a task performed regularly by many crime analysts. Data sources include police offence and incident databases where the quality of geographical references can vary. The reality of dealing with this real world data means that achieving a completely successful geocoding process is rare and few crime analysts can get a hit rate (the percentage measure of success) of 100%. This paper seeks the answer to a seemingly simple question: what is an 'acceptable' minimum geocoding hit rate for crime data? This paper uses a number of different crime patterns and Monte Carlo simulation to replicate a declining geocoding hit rate to answer this question. Reduced crime rates of mapped points, aggregated to census boundaries, are compared for a statistically significant difference. The result indicates 85% as a first estimate of a minimum reliable geocoding rate, and this result is applicable to many address-based, point pattern datasets beyond the crime arena. Numéro de notice : A2004-032 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810310001596076 En ligne : https://doi.org/10.1080/13658810310001596076 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26560 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-04011	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-04012	RAB	Revue	Centre de documentation	En réserve L003	Disponible

On the accuracy of TIGER-type geocoded address data in relation to cadastral and census areal units / J.H. Ratcliffe in International journal of geographical information science IJGIS, vol 15 n° 5 (july 2001)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 15 n° 5 (july 2001) . - pp 473 - 485 Titre : On the accuracy of TIGER-type geocoded address data in relation to cadastral and census areal units Type de document : Article/Communication Auteurs : J.H. Ratcliffe, Auteur Année de publication : 2001 Article en page(s) : pp 473 - 485 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] adresse postale [Termes IGN] cadastre étranger [Termes IGN] géocodage [Termes IGN] précision des données [Termes IGN] recensement démographique [Termes IGN] système d'information géographique Résumé : (Auteur) In many applications of Geographical Information Systems (GIS) a common task is the conversion of addresses into grid coordinates. In many countries this is usually accomplished using address range TIGER-type files in conjunction with geocoding packages within a GIS. Improvements in GIS functionality and the storage capacity of large databases mean that the spatial investigation of data at the individual address level is now commonly performed. This process relies on the accuracy of the geocoding mechanism and this paper examines this accuracy in relation to cadastral records and census tracts. Results from a study of over 20000 addresses in Sydney, Australia, using a TIGER-type geocoding process suggest that 5-7.5% (depending on geocoding method) of addresses may be misallocated to census tracts, and more than 50% may be given coordinates within the land parcel of a different property. Numéro de notice : A2001-115 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810110047221 En ligne : https://doi.org/10.1080/13658810110047221 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21815 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-01051	RAB	Revue	Centre de documentation	En réserve L003	Disponible