Sigfrid Lundberg's Stuff

A quotation is much more than an extract
In my last entry, on cool URIs, I discussed the identification of documents. The conclusion from that is that people in the library world are obsessed by being able to find documents. I take that more serious than most other library folk. I'd say that it is our mission to help our patrons find a single word in a text, a rectangle in an image and so forth. The time is gone when we could tell users: The answer to your question might be in any of the books on that shelf.
Structural web design, 2009

About this site
I'm a terrible nerd. To use software like content management systems or blog software is unthinkable for me. There are many ways to build a site like this. I have chosen one that maximizes the use of angle brackets.
Structural web design, Colophon, 2009

Add footnotes to my pages -- a prototype text annotation interface
I've had a javascript based forum with thread for each entry. That seemed boring to me. Why should users be restricted to commenting entire articles. Why not letting them add footnotes to arbitrary positions in a text. In this entry I experiment with this feature.
Structural web design, XML Processing, 2009

Aggravated autumn depression
I've felt miserable for a month, at least. Here is the explanation...
About me, 2009

Att tjäna den demokratiska kulturnationens minne
Jag har arbetat med att programmera digitala bibliotek i ungefär 15 år. När jag läser debatten om biblioteket i Sydsvenskan känner jag att jag borde säga något. Jag vet inte i vilken utsträckning mitt perspektiv kommer att kännas relevant för alla de som känner sig kallade att yttra sig, men jag har en hel del erfarenheter som nog de flesta andra saknar.
The Library, Internet, 2009

Changed URI for my feed, and a forum for discussions
Having actively maintained my site for some, I've decided make a few changes...
Colophon, 2009

Fifteen polar bears and one architecture
Today I gave a presentation on our metadata work. My experience of that turned out to be about images.
Metadata, 2009

Five years that formed the digital library as we know it: 1997-2001
It appeared to me that many the standards and technologies underpinning the digital library as we know it were formed during five years around the turn of the century.
Metadata, 2009

Forgive me, Father, for I have sinned... I have moved a document
The initiatives behind the persistent linking is trying to change the status of old documents. From 404 to 200. We've had some success with books and journals using ISBN and ISSN numbers. Why not try to copy this to the web? But, alas!, library people have in general too little understanding of the Worldwide Web. In particular those who advocate persistent identifiers.
Structural web design, 2009

Kortfattat Curriculum Vitae: Sigfrid Lundberg
Ett CV är väldigt tråkigt att skriva
About me, 2009

List of publications by Sigfrid Lundberg
Both peer reviewed articles, other articles and some presentations
About me, 2009

Min mor
Min mor var 43 år gammal när hon födde mig 1956. Alltså föddes hon själv 1913, året innan första världskriget bröt ut. Nu är hon 96, och lever, som hon säger, på lånad tid. Tid, det är något som hon tar på största allvar. Vi talas vid per telefon varje dag. Hon ringer 20.10, nästan exakt. Det blir alltid ett trevligt samtal.
Essays, 2009

My first serious experience with ATOM
You don't really understand a document format until you've manually encoded some documents, and written the software to parse and use it for something useful. This somewhat refurbished version of my web site is to a large extent built upon the ATOM syndication format, and here I discuss my experience.
Structural web design, Metadata, 2009

On Divorce and Unemployment Benefit Societies
Here I analyse of some data retrieved from Google Insight Search. This little study is inspired by the study performed by Hyunyoung Choi & Hal Varian, Google Research, were they were able to show that it is possible to make short-term forcasts of economic behavours using search statistics.
Essays, 2009

On being an international commuter
The last four years I've spent more than two hours a day on trains. And usually, but not always less than three. Furthermore, I go from one nation to another and participate in the in the digital dissemination of cultural heritage of a country which isn't my own.
Essays, 2009

OpenSearch, RSS and OPML as XML Webservices for information retrieval
At the Royal Library we have been working with the building of an infrastructure for publishing of digitized material. It is collections of digital images, usually with very little textual content to go with it. It is quite a challenge to build workflows satisfying the needs of technical staff running the scanners, the librararian and editorial staff doing the cataloging and the needs for crosswalking metadata from the OPAC and at the same time be able to syndicate the material in other services adhering to different standards.
XML processing, Colophon, 2009

Syndication and Simple REST XML web services in a library context
Some time ago I demonstrated our navigation services. In that entry I promised to tell you more about these services when they are are more mature. Here is the story on the architecture of some of our new digitization services.
XML web services, Metadata processing, 2009

The description and encoding of structure
Much metadata is fairly stright forward. A book does have a title and an author. That's usually no big deal. We've been able to handle that for centuries. A digital book has chapters, and everything you might want to know may be in chapter two on page seventyfive. Or someone may tell you the solution to your problems after a quarter of an hour in some video on YouTube. Now, how do we cope with this?
Structural web design, Metadata, 2009

The predator rests on its prey
I've seen this image before. An excavator has demolished a building, and has then proudly been parked on top of the remnants.
Essays, 2009

The predigital library
What is the strategic goal for a library web site? Could it be to put the library on the web, or is it basically to the library's resources visible to users anywhere on the globe?
Structural web design, 2009

The specification and the TODO-list
Through the web, a software vendor and a service provider could all of a sudden compete on the same market. The software vendor use the traditional specification, but a service implies software which is in continuous development. Strictly speaking, there are no projects anymore, just different activities. No specifications anymore, but TODO lists containing incidents, bugs and requests for features ranked by importance.
Programming, 2009

The two Cultures
Do you know the second law of thermodynamics?
Programming, 2009

Twelve weeks
It is twelve weeks since i refurbished and redecorated this site. It is time for an evaluation...
Essays, 2009

Wagging the long tail
The problem with providing an OK Amazoogle experience is that we might fail in providing advanced services to patrons that have special needs.
Library catalogues, 2009

What about the HECS platforms?
I've used fortran, pascal, C, perl, php and java in addition to more specialized tools such as SQL and XSLT. There is currently a lot of discussions on what platform will be the next winner.
Programming, 2009

What does Free mean for The Library
Blogging is out, and the new trend is to tweet in Twitters. Syndication is out as well, since Google steals your content and you cannot make money on journalism. How can we survive when all media are free?
Media, The Library, Internet, 2009

What is a book, and does it matter?
Lorcan Dempsey of OCLC research, is involved in among lots of things, statistical analyses of media use. In that work they are forced to make operational definitions of the 'book'.
Essays, Media, 2009

Why I love XSLT extension functions
xslt extensions allow you to define xpath functions and extension elements. That makes it easy for you to perform tasks within xslt that are just only theoretically possible to do.
XML processing, 2009

Why do I keep this site?
Having had a web site for about 15 years, I start to wonder why I keep it in the first place.
Structural web design, 2009

Will the research libraries play a role in e-science
I was asked to participate in an e-science pilot project. The work in the project has been food for thought for me. Will libraries be a part of a future eScience infrastructure?
eScience, 2009

XML on the web, Client Side XSLT and Google
The market has forced the major browser manufacturers to converge on standards. But why are the search engines lagging behind? Browsers are capable of AJAX and advanced XML processing, but the search engines are still basically just removing tags and presenting raw text extracts.
Structural web design, 2009


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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