Digital library http youtu beE 9 xvzv KMbys

�������� Digital library

http: //youtu. be/E 9 xvzv. KMbys

n n A digital library is an integrated set of services for capturing, cataloging, storing, searching, protecting, and retrieving information, which provide coherent organization and convenient access to typically large amounts of digital information. ������������ ����������������

n n Digital libraries are realizations of architecture in a specific hardware, networking, and software situation, which emphasize organization, acquisition, preservation, and utilization of information. �������������� ������������

User interfaces สวนตดตอผใช n 2 user interfaces in two parts : end-users n digital librarians and system administrators who manage the collections n n Web browser �������� client services ���������������������

Handle system n ������ digital objects �� repository �������

How do digital libraries work? n n Collections of digital objects are stored in file systems and databases ������������� � Services are provided using several kinds of technologies ���������� n Information Retrieval: indexing, search, classification ��������� ������� n Metadata: annotation ������ , description ����

����� digital objects ����� n 1. browsing e. g. , Objects ���������� ���� hyperlinks, directories n ����� interface ��������� n

�������� digital objects? n ���������� objects ������� being searched Text ������� Inverted files �������� Numeric������ Databases Multimedia Other ����� (e. g. , scientific( Content-based techniques �������� ��� Domain-specific techniques

������ index ������� ? ����� ��� metadata is indexed n Metadata ������ data n this isn’t indexed this is data these are metadata “Zoey the dog” October 2000 this is indexed

Digital Object is. . . get. Section get. Article get. Track get. Label get. Frame get. Length recognizable by what it can do get. Chapter get. Page

Digital Library Interoperability �����������

Digital Library Interoperability Cornell Digital Library Nordic Digital Library 21

Digital Library Interoperability n Interoperability is based on standards: n n Protocols n n n Such as protocol, metadata Z 39. 50 - search and discovery protocol OAI - Metadata Harvesting Protocol Metadata n n MARC - comprehensive, intend to be used by professional catalogers Dublin Core - for describing electronic material, especially for non specialist user 22

DOI �������� 2 ������� (Prefix) �������� (Suffix( n Prefix �������� 10 ���� 4 ���� n n Prefix n ��� 10. 1000 Suffix ������������ / ������ n doi: 10. 1000. 10/123456 n doi: 10. 1000/ISBN 1 -900512 -44 -0 n doi: 10. 2345/S 1384107697000225

������� digital object (Naming Service( ����������� digital objects Documents identified by globally unique names n �������������� n ����������� specific location (URL) Persistent cnri. dlib/april 97 -payette n Naming Authority Item Name http: //www. somewebserver. org/somedirectory/somefile Identifier (e. g. , URN) Location (URL)

����� Identifiers: Current Initiatives n IETF Uniform Resource Names (URN) specification of URN framework n requirements for resolution systems n syntax definition n n Existing Systems CNRI’s Handle System (**NCSTRL uses) n OCLC PURLs n DOI Initiative n

Z 39. 50 protocol n มาตรฐานสำหรบการสบคนระหวาง เครอง client และ database server Z 39. 50 Facility Client-side description Initialization Establish connection with server and set/request resource limits. Search Initiate search using registered query syntax, generating a result server-side. Retrieval Retrieve a set of records from a specified result set: a large record may be segmented and transmitted piecemeal. Result-set-delete Request deletion of server-side result set or sets. Access Control Server initiated authentication check. Accounting & Resource Control Request status reports of committed server resources and dictate if server is allowed to contact client when agreed limits are reached. sort Specify how a result set should be sort. Browse Access ordered lists such as title and subject metadata Explain Interrogate server to discover support services, registries, and so on Extended Services Access services that continue beyond the life of this client-server exchange, such as persistent queries and database update. Termination Abruptly end client-server session: initiated by either client or server 35

OAI structure model 37

MARC n MARC records are stored as a collection of tag fields in fairly complex Fields Values Personal name: Arnosky, Jim. Main Title: Raccoons and ripe corn Edition statement: 1 st ed. Place/ Name/ Date of publication: New York; Lothrop, Lee & Shepard Books; c 1987. Pagination/ Illustrative/ Size: 25 p; col. ill; 26 cm. Summary: Hungry raccoons feast at night in a field of ripe corn. Topical subject: Raccoons. Local call number: 599. 74 ARN Local barcode number: 8009 Local price: $15. 00 38

MARC fields in catalog record Tags Values 100 $a Arnosky, Jim. 245 $a Raccoons and ripe corn 250 $a 1 st ed. 260 $a New York; $b Lothrop, Lee & Shepard Books; $c c 1987. $a 25 p; $b col. ill; $c 26 cm. 520 $a Hungry raccoons feast at night in a field of ripe corn. 650 $a Raccoons. 900 $a 599. 74 ARN 901 $a 8009 903 $a $15. 00 39

�������� Capability of Digital library ����������� (capture or creation of content( n ����������� (indexing and cataloging) (metadata( n ����� (storage( n ����� (search and query( n ��������� (asset and property rights protection( n ����������� (retrieval and distribution( n

Digital library architecture Notional Architecture Operational Architecture Technical Architecture System Architecture 43

������ Operational Architecture n ��������� (information management system(

�������� System Architecture n n ������� H/W ��� S/W scalability and extensibility

GSDL Digital Library

System Architecture Digital format

Hierarchical Functions of GSDL System (1) Digital Library System Collection System Search System

Hierarchical Functions of Search System Searching Browsing By full text By title By subject By creator By media By Keywords By description

III. Collection System (Librarian Interface) n ������������ (Collection) n �������� (Gathering( n ��������� (Metadata( n ������ (Setting)

Hierarchical Functions of Collection System Collection Gathering Metadata Sets Setting New Select Collection Import General Edit Select Files Edit Plug-ins View Edit Metadata Export Searching Delete Build Save Collection Close program

Collection System n Collection management n คดคน Creating a collection n สราง Building a collection n นำเขาไฟล Import files n รวบรวม Metadata gathering n จดการ Metadata management n ตงคา Collection configuration

File ����� /�� file ��� collection ����� /������� collection ����� Export/Write image ����� collection �������������� Preferences ���� configuration ������ collection Save/Close ������������ Librarian Interface Main menu Work space - File listing - Parameter setting Collection area - List of imported files - Setting values

Librarian functions (2) Enrich: ����� metadata ������� metadata set ���� menu ���� Design

������� DL Architecture Repository n Persistent (and unique) identifiers (URNs) n Data n Metadata n Digital Objects n Access and Delivery (Digital library services) n Collection management n Rights management for intellectual property n

TYPES OF DL SOFTWARE n n Proprietary n 1. ������ n. 2���� Open Source n The Open Source Definition is referred by the Open Source Initiative (OSI) to determine n whether or not a software license can be considered open source.

DL open source software Greenstone n Fedora n D-space n Eprint n 71 71

Modern Features in Digital Library Architectures

Social networking sites Social networking, bookmarking and tagging n Reviews n Recommendation features n Citation and reference linking n Bibliometric tools n

Tag 1 Tag 2 Tag 3 Users interact with resources and create tags Tag 1 Tag 2 Tag 3 75

Social networks Videoblogging and sharing Photo sharing Social Tagging Environment Bookmarking Slide sharing Academic bookmarking

77 77

78 78

79 79

80 80

81 81

Citation linking 82 82

Get it! Citation linker 83 83

84 84

�������� n n URNs intellectual property Digital Library Interoperability n n n Protocols n n Z 39. 50 OAI) Open Archives Initiative) n Metadata n n MARC Dublin Core n Persistent (and unique) identifiers Repository XML OSS (Open Source Software( Digital library software n Greenstone n Fedora n D-space n Eprint Social computing