Sigfrid Lundberg's Stuff
1998: A regional distributed WWW search and indexing service - the DESIRE
way
In an attempt to implement a regional search engine we have
created an open, metadata aware system for distributed, collaborative
WWW-indexing. The system has three main components: a harvester (for
collecting information), a database (for making the collection
searchable), and a user interface (for making the information
available). All components can be distributed across networked computers,
thus supporting scalability. The system is metadata aware and thus allows
searches on several fields including title, document author, and
URL. Nordic Web Index (NWI) is an application using this system to create
a regional Nordic web-indexing service. NWI is built using five
collaborating service points within the Nordic countries. The NWI
databases can be used to build additional services. Services today include
special metadata databases, multimedia databases, and statistics about the
Nordic Web.
Web indexing,
Harvesting,
Metadata,
Z39.50, 1998
2000: Metadata harvesting
This is unfortunately unpublished, but it presents most one of
the most extensive datasets on the content of HTML embedded metadata which
I collected while working with the Nordic Webindex.
Web indexing,
Harvesting,
Metadata,
Z39.50, 2000
1998: En arkitektur för ett distribuerat system för spridning av
forskningsinformation
Arkitekturen för ett nätverk av tjänster för spridning av
forskningsinformation beskrivs. Nätverket tillåter distribuerat underhåll
av såväl data som metadata. Till nätverket kan anslutas såväl
bibliografiska databaser som helt WWWbaserade metadataberikade
tjänster. Metadataproduktionen följer standarden Dublin Core. De förra
typerna av tjänster inkorporeras i nätverket genom interoperabilitet på
sökprotokollsnivå, medan metadata och fulltext från de senare göres
sökbara genom en WWWrobot. Kommunikation inom nätverket utnyttjar
standardiserade Internet protokoll som HTTP, och för
informationsåtervinning Z39.50
Web indexing,
Harvesting,
Metadata,
Z39.50, 1998
1998: NWI II, An Enhanced Nordic Web index: Final report
The Nordic Web Index (NWI) project is a collaborative effort
across the Nordic countries, aiming at providing a free Worldwide Web
search service to the general public in the countries involved. NWI has
been fruitful for several reasons: First and foremost we are today
providing access to databases covering the WWW in four of the Nordic
countries and, as of September 1998, five service points in six languages
Denmark, Finland, Sweden, Norway and Iceland.
Web indexing,
Harvesting,
Metadata,
Z39.50, 1998
1997: A proposal for metadata formats for use in the Swedish Enviro-Net
This paper outlines a combination of the Dublin Core metadata
embedded in HTML metadata tags and the GILS Z39.50 profile used for
information retrieval. It is a combination would solve the distributed
indexing, search and retrieval problems within a network of environmental
authorities. The Swedish Enviro-Net lived for a few years at the end of
1990ties.
Web indexing,
Metadata,
Z39.50, 1997
My name is Sigfrid Lundberg. The stuff I publish here may, or may not, be of interest for anyone else.
On this site there is material on photography, music, literature and other stuff I enjoy in life. However, most of it is related to my profession as an Internet programmer and software developer within the area of digital libraries at the Royal Library, Copenhagen (Denmark) and, before that, Lund university (Sweden).
The content here does not reflect the views of my past or present employers