The Alexandria Digital Library Architecture

Frew, James; Freeston, Michael; Freitas, Nathan; Hill, Linda; Janée, Greg; Lovette, Kevin; Nideffer, Robert; Smith, Terence R.; Zheng, Qi

doi:10.1007/3-540-49653-x_5

Cited by 24 publications

(15 citation statements)

References 4 publications

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“…VGI In his 1981 book Critical Path, Buckminster Fuller described Geoscope, a vision of a computer-aided model of the Earth (cited in Foresman 2008). Today, digital earth systems have become 'comprehensive, distributed geographic information and knowledge organization' systems (Grossner et al 2008, p. 145), including Google Earth, Microsoft's TerraServer, NASA Digital Earth Testbed, and Alexandria Digital Library (Barclay et al 2000, de la Beaujardire et al 2000, Frew et al 2000, Butler 2006). Their success is driving increased interest in digital earth research, often technological in nature (Goodchild 1999, Yongxiang 1999, Maguire 2007, Foresman 2008, Grossner et al 2008.…”

Section: Limitations Of Population Datamentioning

confidence: 97%

Volunteered geographic information production as a spatial process

Hardy

Frew

Goodchild

2012

International Journal of Geographical Information Science

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Wikipedia is a free encyclopedia that anyone can edit and a popular example of usergenerated content that includes volunteered geographic information (VGI). In this article, we present three main contributions: (1) a spatial data model and collection methods to study VGI in systems that may not explicitly support geographic data;(2) quantitative methods for measuring distance between online authors and articles; and (3) empirically calibrated results from a gravity model of the role of distance in VGI production. To model spatial processes of VGI contributors, we use an invariant exponential gravity model based on article and author proximity. We define a proximity metric called a 'signature distance' as a weighted average distance between an article and each of its authors, and we estimate the location of 2.8 million anonymous authors through IP geolocation. Our study collects empirical data directly from 21 language-specific Wikipedia databases, spanning 7 years of contributions (2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008) to nearly 1 million geotagged articles. We find empirical evidence that the spatial processes of anonymous contributors fit an exponential distance decay model. Our results are consistent with the prior results on information diffusion as a spatial process, but run counter to theories that a globalized Internet neutralizes distance as a determinant of social behaviors.

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Section: Limitations Of Population Datamentioning

confidence: 97%

Volunteered geographic information production as a spatial process

Hardy

Frew

Goodchild

2012

International Journal of Geographical Information Science

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“…Furthermore, VRML has been superseded by the eXtensible 3D (X3D) format which offers more functionality than its predecessor (Web3D Consortium 2004). Other advances in Java and the possibilities they offer GIR are exhibited by the Java Interface for Geographic Information (JIGI), which is the web-based client application for accessing the Alexandria Digital Library (ADL) (Frew et al 2000).…”

Section: Storm In Contextmentioning

confidence: 99%

Multidimensional visualisation of degrees of relevance of geographic data

Hobona

James

Fairbairn

2006

International Journal of Geographical Information Science

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The ever-increasing number of spatial data sets accessible through spatial data clearinghouses continues to make geographic information retrieval and spatial data discovery major challenges. Such challenges have been addressed in the discipline of Information Retrieval through ranking of data according to inferred degrees of relevance. Spatial data, however, present an additional challenge as they are characteristically made up of geometry, attribute and, optionally, temporal components. As these components are mutually independent of one another, this paper suggests that they be ranked independently of one another. The representation of the results of the independent ranking of these three components of spatial data suggests that representation of the results of the ranking process requires an alternative approach to currently used textual ranked lists: visualisation of relevance in a three-dimensional visualisation environment. To illustrate the possible application of such an approach, a prototype browser is presented.

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“…γ) Σε µερικά στοιχεία προτείνεται οι τιµές τους να προκύπτουν αυτόµατα από το σύστηµα αθροίζοντας ή λαµβάνοντας τιµές από κατώτερα επίπεδα περιγραφής (inherent metadata). Αυτό είναι σηµαντικό από άποψη χρόνου εργασίας και ακρίβειας [Frew et al, 1998]. Για τα στοιχεία αυτά ισχύει η ένδειξη "INT= inherent".…”

Section: μεθοδολογία δηµιουργίας του µοντέλουunclassified

“…Στη συνέχεια µελετήθηκαν και άλλα διεθνώς αναγνωρισµένα σχήµατα όπως το µοντέλο αρχειακής περιγραφής General International Standard Archival Description (ISAD(G)) [Committee on Descriptive Standards, 2000], στο οποίο βασίζεται το EAD [LC, 2008a], και το IEEE-Learning Object Metadata (LOM) [IEEE LTSC, 2002], καθώς και πολλά σχήµατα µεταδεδοµένων, όπως το σχήµα µεταδεδοµένων Alexandria Digital Library [Frew et al, 1998], το σχήµα του έργου ψηφιοποίησης Riding [Brack, Palmer, Robinson, 2000] και του Stanford University [2002].…”

Section: επίπεδο συλλογήςunclassified

“…metadata schema: µια δήλωση για τα σχήµατα µεταδεδοµένων που χρησιµοποιούνται για την περιγραφή των τεκµηρίων της συλλογής ή υπο-συλλογής. Το στοιχείο αυτό προέρχεται από το σχήµα περιγραφής της Ψηφιακής βιβλιοθήκης της Αλεξάνδρειας [Frew et al, 1998]. Ουσιαστικά δίνεται το όνοµα και η έκδοση του προτύπου µεταδεδοµένων που χρησιµοποιείται για την περιγραφή των αντικειµένων καθώς και ένας σύνδεσµος (link) προς την πλήρη περιγραφή του προτύπου.…”

Section: για την ψηφιακή συλλογή ισχύουν αντίστοιχα τα εξήςunclassified

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Μεταδεδομένα Διαχείρισης Λαογραφικών Συλλογών

Λουρδή¹,

Lourdi²

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The Alexandria Digital Library Architecture

Cited by 24 publications

References 4 publications

Volunteered geographic information production as a spatial process

Volunteered geographic information production as a spatial process

Multidimensional visualisation of degrees of relevance of geographic data

Μεταδεδομένα Διαχείρισης Λαογραφικών Συλλογών

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