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INFORMATION STORAGE and RETRIEVAL : ISR

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INFORMATION STORAGE and RETRIEVAL : ISR


review


3

(Search Engines)

1. (Crawling)

2. (Indexing)

3. (Retrieval)


1. Free text Search Engines

2. Index or Directory Search Engines

3. Multi or Meta Search Engines

4. Natural language Search Engines

5. Resource or Site Specific Search Engines

Search Engines


1. (Currency)

2.

(Search Interface)

3. (Search Features)

4. (Results List

Display Features)

5. (Other Features of Note)

Search Engines



1. (Source Database)

(Full Text)


1. (Source Database)

1.1 (Factual Database)

1.2 (Full-Text Database)

1.3 (Numeric Database)


2. (Reference Database)

(full-text) (Bibliographic Database)


?



- URL

-

- (User Interface:UI)



(Interoperability) (Hardware) (Application Software) (Database Management System:DBMS )


1. (Request)

2. (Response)


A

B


A

B


A

B


A

B


2

1. Meta search(Federated search)

2. Harvesting and Indexing

* 2 (Protocol)

(Interoperability)


Meta search(Federated search)


Meta search(Federated search)


Meta search(Federated search)


-

-

-

Meta search(Federated search)


Meta Search Meta Search Z39.50 SRU(Search/Retrieve via URL)

Meta search(Federated search)


Z39.50 ISO23950 ANSI 39.50-1995, Information Retrieval Application Service Definition and Protocol Specification

http://www.loc.gov/z39.50/agency/

Z39.50


Z39.50 Bibliographical Machine Readable Cataloging Record (MARC)

Z39.50


Z39.50

Z39.50


Z39.50


http://www.loc.gov/z3950/

Z39.50


http://iic.oie.go.th:8080/gw/basic/indexeng.jsp

Z39.50


SRU URL HTTP GET HTTP POST (SRU via POST) HTTP GET XML

SRU(Search/Retrieve via URL)


HTTP (Hyper Text Transfer Protocol) GET URL

HTTP GET


GET

HTTP POST


Request

http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve &query=dinosaur&maximumRecords=1&recordSchema=dc

SRU

Response

<record><recordSchema>info:srw/schema/1/dc-v1.1</recordSchema><recordPacking>xml</recordPacking><recordData><srw_dc:dc xmlns:srw_dc="info:srw/schema/1/dc-v1.1"><dc:title>This is a Sample Record</dc:title></srw_dc:dc></recordData><recordPosition>1</recordPosition><extraRecordData><rel:score xmlns:rel="info:srw/extensions/2/rel-1.0">0.965</rel:rank> </extraRecordData></record>


(Collect) , ,

Harvesting and Indexing


Harvesting and Indexing


-

-

Harvesting and Indexing


-

-

Harvesting and Indexing


Harvesting and Indexing OAI-PMH (Open Archives Iniative Protocol for Metadata Harvesting)

Harvesting and Indexing


Open Archive Initiative (Interoperability) (Digital Library) (Digital Repository) (Simple Protocol) Protocol for Metadata Harvesting (OAI-PMH)

OAI-PMH (Open Archives Iniative Protocol for Metadata Harvesting)


2

1. (Data Provider)

(metadata) (resource)

OAI-PMH (Open Archives Iniative Protocol for Metadata Harvesting)


2. (Service Provider)

(Havest) (searching), (Indexing)

OAI-PMH (Open Archives Iniative Protocol for Metadata Harvesting)


OAI-PMH (Open Archives Iniative Protocol for Metadata Harvesting)


2. (Service Provider)

(Havest) (searching), (Indexing)

OAI-PMH (Open Archives Iniative Protocol for Metadata Harvesting)


OAI PMH ( Verbs)(Service Provider)(Data Provider) 6

OAI-PMH (Open Archives Iniative Protocol for Metadata Harvesting)


OAI-PMH (Open Archives Iniative Protocol for Metadata Harvesting)


1. GetRecord (record) Dublin Core

2. Identify

3. ListIdentifiers Header OAI

OAI-PMH (Open Archives Iniative Protocol for Metadata Harvesting)


4. ListMetadataFormats

5. ListRecords

6. ListSets

OAI-PMH (Open Archives Iniative Protocol for Metadata Harvesting)


OAI-PMH


OAI-PMH


OAI-PMH


http://ir.ub.rug.nl/oai/?verb=Identify


(low barrier)

OAI-PMH HTTP GET HTTP POST XML OAI

OAI-PMH Dublin Core

OAI-PMH


http://www.openarchives.org/OAI/openarchivesprotocol.html

Service Provider

http://www.openarchives.org/service/listproviders.html

Data Provider

http://www.openarchives.org/Register/BrowseSites

OAI-PMH


?

Harvesting and Indexing

Meta search


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