METALIS is an OAI Service Provider for the Library and Information Science field. The service is based on specific pieces: the metadata harvesting process, the crosswalks designed to homogenize metadata, the web interface of the Service Provider METALIS and the OpenUrl usage

Tajoli, Zeno

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METALIS: A federated-search tool to aggregate Data Providers in LIS fieldMETAresearch in Library and Information ScienceZeno Tajoli, Cilea. METAresearch in Library and Information Science2Instruments used• Cheshire II• Perl 5.8 scripts (XML::Twig and HTML::Entities)• TCL scripts• HTML pagesZeno Tajoli, Cilea. METAresearch in Library and Information Science3Operations• Harvest• Conversion to an internal schema• Search and displayZeno Tajoli, Cilea. METAresearch in Library and Information Science4Harvest• OAI-PMH sources• Every day an OAI-PMH query• Use OAI-PMH to harvest a section of a Data Provider• All sources available in LIS fieldZeno Tajoli, Cilea. METAresearch in Library and Information Science5Conversion• One format (oai_dc format)• Many implementation • Many interpretations• Key point:? Subject? Language? Type? RightsZeno Tajoli, Cilea. METAresearch in Library and Information Science6Conversion• Internal format has more than metadata only• There are:– Metadata– Display information– Sort information'sZeno Tajoli, Cilea. METAresearch in Library and Information Science7Conversion - ArchiveSIC• Type conversion'Text' => 'Article'• Language conversion'fr' => 'fre','en' => 'eng','de' => 'ger','es' => 'spa','it' => 'ita'Zeno Tajoli, Cilea. METAresearch in Library and Information Science8Conversion - ArchiveSIC‘History of information/communication’, ‘Knowledge management’, ‘Theory of information/communication’, ‘Others’ =>‘A’• ‘Bibliometry, scientometry’, ‘Cinema, art, esthetics’, ‘Conflicts, information strategy, intelligence’, ‘Geopolitics’, ‘Local authorities’, ‘Organisation and communication’ ‘Public Sphere’, ‘Sociology of information and communication’ =>‘B’• ‘Mass media’, ‘Scientific communication and information’ => ‘C’‘Museology’ =>  ‘D’• ‘Information/communication law’ => ‘E’• ‘Economy, cultural industry’, ‘Education e-learning training’ =>’G’• ‘Electronic publishing’ =>’H’• ‘Hypertext, hypermedia’, ‘Information retrieval’ =>’I’• ‘Information system engineering’, =>’L’Zeno Tajoli, Cilea. METAresearch in Library and Information Science9Display modificationsub mod_title #modification of the title for the displaymy($t, $title) =@_; #Import values in the routine$title->set_gi('dctitle'); #change the tag dc:title into dctitlemy $title_value = $title->text; #Work the valueif (!($title_value)) {$title_value = 'Not title available'} ;my $decoder = Encode::Guess->guess($title_value); #Find char setdie $decoder unless ref($decoder);my $utf8 = $decoder->decode($title_value); #All into utf-8$utf8 =~ s/&amp;/&/g;$utf8 =~ s/&quot;/"/g;$utf8 = HTML::Entities::decode($utf8); #all chars into &#nnnn;my $title_value = HTML::Entities::encodenumeric($utf8);$title->set_text($title_value); #Put out the changed valueZeno Tajoli, Cilea. METAresearch in Library and Information Science10Sorting• Put all data in one tag.• For the authors: <sortauth></sortauth> • Only for limit of cheshire 2• To improve in the futureZeno Tajoli, Cilea. METAresearch in Library and Information Science11Search• Use every information to improve the search• Use a familiar interface.• An interface like an OPAC• On the top links to navigate• Down informative linksZeno Tajoli, Cilea. METAresearch in Library and Information Science12Home - Simple Search - Advanced Search - Setup OpenUrl ResolverMETALIS is a Service Provider for the Library and Information Science field. We collect (harvest) metadata from institutions that offer full-text papers and documents about Library and Information Science.The general framework is known as "Open Access Movement"; the AEPIC project mantains a list of useful resorces about all aspects of Open Access.The different options available have these meanings: •Simple Search: To search by keywords in all fields. It is possible to filter by year, type of document, origin of metadata and class. •Advanced Search: To search by keywords and phrases in different fields. It is also possible to filter by one o more years, type of document, origin of metadata and class. •Setup OpenUrl Resolver: METALIS builds an OpenURL with the metadata of the document. By default METALIS uses its resolver; if you prefer you can specify your local resolver. METALIS harvests from these Data Providers: •Archive Ouverte en Sciences de l'Information et de la Communication.•ArXiv.Only set about Computer Science and for the subjects "Digital Libraries" and "Information Retrieval". •Caltech Library System Papers and Publications.•CNR Bologna Research Library.•Digital Library of Information Science and Technology.•E-Prints in Library and Information Science.•Librarians' Digital Library. Only two sets, Publications / Articles and Theses / Dissertations. •Mémoires de 3 cycle en Sciences de l'Information et de la Communication.•Thèse-EN-ligne. Only sets about Library and Information Science. This work is licensed under a Creative Commons License.Service developed by Zeno Tajoli. Credits of S. Warner, A. Tugnoli, UKOLN and RDN. SourcesZeno Tajoli, Cilea. METAresearch in Library and Information Science13Advanced search linkhttp://metalis.cilea.it/advanced.htmlZeno Tajoli, Cilea. METAresearch in Library and Information Science14OpenUrl• A standard to find a specific full-text• A reverse use• To find correlated full-texts• METALIS can use your OpenUrl resolverZeno Tajoli, Cilea. METAresearch in Library and Information Science15The Future• Now Cheshire II• In the future:– Cheshire3 http://www.cheshire3.org/ ?– Zebra with OCKHAM http://wiki.osuosl.org/display/OCKPub/Home ?– CDSware ?– Others ?Zeno Tajoli, Cilea. METAresearch in Library and Information Science16Question ?

METALIS : a federated-search tool to aggregate Data Providers in LIS field

E-LIS repository

METALIS: A federated-search 
tool to aggregate Data Providers in 
LIS field
METAresearch in Library and 
Information Science
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
2
Instruments used
• Cheshire II
• Perl 5.8 scripts (XML::Twig and 
HTML::Entities)
• TCL scripts
• HTML pages
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
3
Operations
• Harvest
• Conversion to an internal schema
• Search and display
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
4
Harvest
• OAI-PMH sources
• Every day an OAI-PMH query
• Use OAI-PMH to harvest a section of a 
Data Provider
• All sources available in LIS field
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
5
Conversion
• One format (oai_dc format)
• Many implementation 
• Many interpretations
• Key point:
? Subject
? Language
? Type
? Rights
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
6
Conversion
• Internal format has more than metadata only
• There are:
– Metadata
– Display information
– Sort information's
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
7
Conversion - ArchiveSIC
• Type conversion
'Text' => 'Article'
• Language conversion
'fr' => 'fre',
'en' => 'eng',
'de' => 'ger',
'es' => 'spa',
'it' => 'ita'
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
8
Conversion - ArchiveSIC
‘History of information/communication’, ‘Knowledge management’, 
‘Theory of information/communication’, ‘Others’ =>‘A’
• ‘Bibliometry, scientometry’, ‘Cinema, art, esthetics’, ‘Conflicts, 
information strategy, intelligence’, ‘Geopolitics’, ‘Local authorities’, 
‘Organisation and communication’ ‘Public Sphere’, ‘Sociology of 
information and communication’ =>‘B’
• ‘Mass media’, ‘Scientific communication and information’ => ‘C’
‘Museology’ =>  ‘D’
• ‘Information/communication law’ => ‘E’
• ‘Economy, cultural industry’, ‘Education e-learning training’ =>’G’
• ‘Electronic publishing’ =>’H’
• ‘Hypertext, hypermedia’, ‘Information retrieval’ =>’I’
• ‘Information system engineering’, =>’L’
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
9
Display modification
sub mod_title #modification of the title for the display
my($t, $title) =@_; #Import values in the routine
$title->set_gi('dctitle'); #change the tag dc:title into dctitle
my $title_value = $title->text; #Work the value
if (!($title_value)) {$title_value = 'Not title available'} ;
my $decoder = Encode::Guess->guess($title_value); #Find char set
die $decoder unless ref($decoder);
my $utf8 = $decoder->decode($title_value); #All into utf-8
$utf8 =~ s/&amp;/&/g;
$utf8 =~ s/&quot;/"/g;
$utf8 = HTML::Entities::decode($utf8); #all chars into &#nnnn;
my $title_value = HTML::Entities::encodenumeric($utf8);
$title->set_text($title_value); #Put out the changed value
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
10
Sorting
• Put all data in one tag.
• For the authors: <sortauth></sortauth> 
• Only for limit of cheshire 2
• To improve in the future
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
11
Search
• Use every information to improve the 
search
• Use a familiar interface.
• An interface like an OPAC
• On the top links to navigate
• Down informative links
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
12
Home - Simple Search - Advanced Search - Setup OpenUrl Resolver
METALIS is a Service Provider for the Library and Information Science field. We collect (harvest) metadata from institutions that offer full-
text papers and documents about Library and Information Science.
The general framework is known as "Open Access Movement"; the AEPIC project mantains a list of useful resorces about all aspects of 
Open Access.
The different options available have these meanings: 
•Simple Search: To search by keywords in all fields. It is possible to filter by year, type of document, origin of metadata and class. 
•Advanced Search: To search by keywords and phrases in different fields. It is also possible to filter by one o more years, type of 
document, origin of metadata and class. 
•Setup OpenUrl Resolver: METALIS builds an OpenURL with the metadata of the document. By default METALIS uses its 
resolver; if you prefer you can specify your local resolver. 
METALIS harvests from these Data Providers: 
•Archive Ouverte en Sciences de l'Information et de la Communication.
•ArXiv.Only set about Computer Science and for the subjects "Digital Libraries" and "Information Retrieval". 
•Caltech Library System Papers and Publications.
•CNR Bologna Research Library.
•Digital Library of Information Science and Technology.
•E-Prints in Library and Information Science.
•Librarians' Digital Library. Only two sets, Publications / Articles and Theses / Dissertations. 
•Mémoires de 3 cycle en Sciences de l'Information et de la Communication.
•Thèse-EN-ligne. Only sets about Library and Information Science. 
This work is licensed under a Creative Commons License.
Service developed by Zeno Tajoli. Credits of S. Warner, A. Tugnoli, UKOLN and RDN. Sources
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
13
Advanced search link
http://metalis.cilea.it/advanced.html
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
14
OpenUrl
• A standard to find a specific full-text
• A reverse use
• To find correlated full-texts
• METALIS can use your OpenUrl resolver
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
15
The Future
• Now Cheshire II
• In the future:
– Cheshire3 http://www.cheshire3.org/ ?
– Zebra with OCKHAM 
http://wiki.osuosl.org/display/OCKPub/Home ?
– CDSware ?
– Others ?
Zeno Tajoli, Cilea. METAresearch in 
Library and Information Science
16
Question ?


http://eprints.rclis.org/7058/1/Zeno-Tajoli.pdf

METALIS : a federated-search tool to aggregate Data Providers in LIS field

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