Skachkov DM Zhizhimov O L Institute of Computational Technologies SB RAS Relevance and prerequisites for research The popularity of the use of geographical perspective in information systems ID: 563304
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Slide1
About using of retrospective geocoding for geographical search in digital libraries
Skachkov
D.M.
,
Zhizhimov
O. L.
Institute of Computational Technologies SB RAS
Slide2
Relevance and prerequisites for research
The popularity of the use of geographical perspective in information systems
Lack of geographic functionality in non-geographical information systems
There is no single standard submission of geographic information in non-geographical systems
The lack of retrospective geocoding on the basis of the thesauri, anyway for RussiaSlide3
Ways of introduction geographic information
Explicitly setting the coordinates of an object record
Link to specialized thesaurus (preferably, since this approach makes it easier to integrate into existing system)Slide4
Traits of binding to the thesaurus
Binding using the thesaurus of geographic names can be ambiguous, since:
Geographical names depend on the time and language
Any area (path) can contain a lot of names to be included in the areas of
Thus the thesaurus must meet the following requirements:
Contain information about the names and coordinates of geographical object at different times and for different languages
Contain relationships that reflect the positioning of objects
Contain references to normative documents that contain information about how changing the object's characteristics over time
Allow search not only by coordinates and names, but also by time periodsSlide5
Existing thesauri of geographical names
Scheme
Contains historical information
Contains links to source documents
Form of the object
Getty
TGN
+
+
±
Russian State Library
-
-
-
Google
geocoding
-
-
-
Yandex.Maps
geocoding
-
-
-
ГОСТ Р 52573-2006
+
+
±
CIDOC CRM
-
-
±Slide6
List of requirements to the thesaurus
The structure of the thesaurus must allow effectively solve following tasks:
Direct and reverse geocoding
Retrospective
Allow to include information in search technology into existing information systems
Contain internal links
by geographical features
by time characteristics
by documents
Thesaurus must be represented in the schema that is close to the standard schema
It must have unambiguous mapping on other thesauri, in particular, it must have one-to-one mapping on the Z-
Thes
profile (may be extended) to integrate with existing information systemsSlide7
Ontology of the thesaurus
Geo object
Text representation
Geometry representation
Name
Language
Document
Document description
Creation date
Date of coming into effect
Point
Region
. . .Slide8
Profile for accessing thesaurus
For integration with existing information systems and promote interoperability, you must lock the profile access to Thesaurus (RGeoThes). Profile RGeoThes profile file should be, and must identify the ZThes:
data schema
structure recording and stencils
the mandatory and optional indexes (access points)
the syntax for search queries and search attributes
reporting formats
protocols for access to the resourceSlide9
Record example
Record {
"qualifier":
"8c26bc72-31b3-4cfb-bbae-6d731057bcd1",
"previous": {
"qualifier": ". . . "
"document": {
"description": ". . . "
}
},
"
primaryName
":
{
"name": "
Агафониха", "type": "деревня", "language": "ru",
"beginDocument": { "description": "unknown document" }, "endDocument": { "description": "Решение Новосибирского областного Совета депутатов №4503
от 20/09/2002.", "date": "Sep 20, 2002 " } },"names": [ { "name": "Агафониха1", "type": "деревня", "language": "
ru", "beginDocument": { "description": "unknown document" }, "endDocument": { "description": "unknown document" }
} }], "locations": [{ point1: { "latitude": 54.933333, "longitude": 84.133333, }, point2: { "latitude": 55.533333,
"longitude": 85.933333, }, "beginDocument": { "description": “some document…" }, "endDocument": { "description":
“some document…" } }],…Slide10
Thank you for your attention!