Browse Prior Art Database

INTEGRATED GEOGRAPHIC DATA BASES: The GADS Experience

IP.com Disclosure Number: IPCOM000148830D
Original Publication Date: 1979-Dec-03
Included in the Prior Art Database: 2007-Mar-30
Document File: 26 page(s) / 1M

Publishing Venue

Software Patent Institute

Related People

Mantey, P.E.: AUTHOR [+3]

Abstract

P. E. Mantey E. D. Carlson

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U2702(34597) 11/3/79 Computer Science

INTEGRATED GEOGRAPHIC DATA BASES: The GADS Experience

P. E. Mantey
E. D. Carlson

. IBM Research Laboratory San Jose, California 951193

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ABST~ACT: A large class of problems faced by decision makers requires access to information with geographical attributes. Examples of such problems include facility siting, resource allocation, assignment of sales or service territories, development of advertising strategies, urban planning, etc. In problem solving utilizing data with geographical attributes, the data can often be best understood when it can be displayed and interpreted in the form of a map, An intetac- tive decision support system called GADS (Geo-data Anaiysis and Display System) has betn developed to provide decision makers with interactive access to geographic data and to provide them with functions supporting both ' problem finding ' and ' problem solving ' . This system has been successfully utilized by a variety of decision makers salving reai problems in both government and private industry.

T%e GADS system supports interactive use of an extracted data base which contains a set of attributes for each of the polygons composing a map of the reievanr geographical area. This extracted data base can be imagined as a three-dimensionall array or cube with the dimensions being polygon, attribute, and time period. The map related eo this cube of extracted data, is defined by a set of nodes and (labeled) boundary lines. In addition to these two data bases, GADS supports user access to large source or ' event ' files. With interactive access to these event files, the user is abie to create an extracted data base suitable for the specific set of problems being addressed by that decision maker.

fhk paper provides a brief description of the GADS system and the applications in which it has been utilized by non-programmer decision-makers. The data base requirements for the extracted data base, its corresponding polygon map, and for the (set of) event files being used, are examined in terms of their type, volume, structure, retrieval and search characteristics, and frequency of use. Also, the large geographic reference file (e.g. the DIME file of the: U.S.

Census Bureau), which is used in devetoping the polygon map and in determining geographic loeation of events in those source files (by programs external to GADS) is examined. Finally. some ideas an data base support for functions not in the GADS implementation (i-e. image) are considered.

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The GADS system (Cristiani.et.al., 1973). {Carlson, et. al., 1974) makes an integrated geo- graphic data base accessible fop supporting interactive problem solving by non-programmers.

Geographic data is ma...