Tuesday, November 16, 2010
Unit 12
Tuesday, November 9, 2010
unit 11
Perhaps because it is the freshest memory or maybe I have had more experience with evaluating websites in this field, but I was impressed with the Omeka site. In part I felt it was nicely geared for the beginner with both screencast and text based documentation. There was a logical set-up to the site and I felt the general overview was complete. One negative was that the FAQ page was deleted and had not been replaced for over a year. I particularly liked the Use Cases forum, in which developers explained how they used Omeka in different real life institutions. This gave me both insight into how to use Omeka but also a more general sense of what other types of people want to develop digital collections beyond libraries, archives and museums.
Drupal is aesthetically a little fussy for me but the documentation was significantly more detailed on the technical side than Omeka. It is also clearly much more popular and has been around longer which means its background information and forums have tackled more problems and offer more solutions. Drupal and Dspace home sites have a lot in common in terms of numerous links, depth of documentation and general sense of being overly full. An example from Dspace is the feature of linking ‘child pages’ to each main section. There are reasons why this would be helpful to follow a topic throughout the website but it adds on numerous links to the page that is unnecessary/confusing for the general user.
Jhove strikes a balance between the bustling atmosphere of Drupal and Dspace compared to the cleaner Omeka. It is clearly focused for IT staff. A concern is that some of the information is a little old. An example being that the news link has only two links, both from 2008. Has nothing happened in two years or is no one managing the website? Neither inspire a sense of confidence.
The OAI-PMH main site is deep and shows that the project has history and is a major international endeavor. It is a little impersonal and expects a certain amount of previous knowledge from its users on things like acronymns. My experience was positive with the install process but the website itself is a little intimidating.
One of the key features of all these systems is that they are open source based. To me this means the sense of community, communication and forum options, documentation and current news would be very important considerations in the choosing process. I like Omeka but the appeal of Dspace or Drupal is the large and active community of users that could provide support for free. It is a balancing act and I would give a lot of consideration to future support before making commitments.
Sunday, November 7, 2010
Unit 10
It is an interesting question to determine how successful a service provider of harvested metadata is as we are entirely dependent on their efforts for our results. Without the service providers, the information does not get found easily. Which makes it curious to me that the service providers I was able to examine were rather a mix of strange bedfellows.
Ex. 1. http://www.perseus.tufts.edu/hopper/search?redirect=true
The collections that provide the sources are disparate to say the least. The dominant collection is on the Art and Artifacts of Greek and RomanMaterials, while the second largest contributor is a collection of 19th century American history, including the digital archive of the Richmond Times Dispatch newspaper. Subject, time period, place, etc. are not held in common and when searching the two faces of the collection are very apparent. What I am assuming is that it is a collection that the host, Tufts University, is finding this a convenience for its own reasons but it is not logical combination for the general user.
Ex. 2 http://re.cs.uct.ac.za/
This was a different style of searching than the norm. What the site does (from its frankly hideous looking interface) is allows you to set metadata parameters that you can then apply to the OAI compliant providers listed. There is not a way to search by key words and it requires knowledge of how OAI harvesting works to make sense. Again the collection of providers is from all sorts of institutions, around the world and with little obviously in common. It is kind of an inside out search tool. Another confusing point, the Open Archives list shows Virginia Tech as the host, but the site itself is from the University of Cape Town. Bit of a difference between the two!
Ex. 3 http://hispana.mcu.es/es/estaticos/contenido.cmd?pagina=estaticos/presentacion
By far the most successful of the examples was the Hispana site in terms of relevancy of search results. In large part this is due to the fact that it is a dual project with one side a directory of digital projects from Spain and the other a harvester for those same projects. This two in one approach meant that searches for common terms gave relevant results. The limitation is that it is all related to Spain. However, I would prefer to go to more than one service provider and get relevant results if they are both like the Hispana site rather than go to the Perseus site and have an unusable mix.
Tuesday, October 26, 2010
Week 9
Ah, the metadata dilemma. Too much is too expensive while too little makes the whole project pointless since no one will find it. For digital libraries in general I think this is an area that is both art and science. For my digital collection in particular, the potential audience and known creators are who I have in mind when I am experimenting with cataloging. What I mean by that is I envision my collection of webcomics as being of popular culture interest and not for a specialized field or academia. For general users, who are comfortable online, traditional subject terms are not adequate as they can be old fashioned or non-intuitive. Because of that I have been playing mainly with key words and tags. Neither are perfect. Key words have potential as being natural language based and a well known search method. I think it is the system most users will be comfortable with. I personally like tagging as method of description but without high user involvement and/or collection density it doesn’t necessarily work well. In both cases, consistency is dependent on me (the administrator) paying attention and keeping track of what I had chosen in previous cases. The only way around this problem I can think of is to include decision making for terminology in the planning stages. And then hope one is prescient enough to cast the net wide enough to give full coverage.
Tuesday, October 19, 2010
Week8
Thursday, October 14, 2010
Week 7
I have had a week of discouragements in regards to DSpace installation as my late posts can attest. My beloved laptop has had sudden battery problems . The phone company has done a lot of repair work in my neighborhood after a big storm that has meant random internet blackout periods. And I am missing something about DSpace. Intellectually I understand the hierarchical nature of the DSpace setup but it is not a natural fit. When I try to apply those principles of organization to my digital collection it does not work well. I struggled to pick a collection at the beginning of the semester and still feel that it is not well formed. My conceptualization is not very firm as I don’t have any practical experience to draw off of. In previous posts I have been quite critical of dull or not very relevant collections being chosen for digital projects by institutions as being a cop-out. I still think that but I have new appreciation for the difficulties inherent in the process.
On more positive notes, the readings for Unit 7 were both very interesting. I appreciate the perspective the Stanford authors laid out as to the successes and failures of a major digital repository. It gave a new sense of the speed of change the digital reservation community is experiencing. The Johns reading about the context of repository software design gave insight into the root causes of differences between systems. The Greenstone open-source system is one I particularly find interesting because of its focus on multilingualism. The New Zealand Digital Library Project and the University of Waikato developed the project and a partnership with UNESCO has helped make it an international community. A phrase from the website has particular resonance regarding increasing the “awareness of the social implications of information technology”. This is brought home by the use of Greenstone for bilingual digital collections for minority languages at risk of extinction, as the New Zealand project has included Maori, there are others in Welsh, Kazakh, Hawaiian and more. It pleases me to see a digital library have two preservation roles to play. The Greenstone project also focuses on its interoperability with OAI-PMH and METS. It is also able to import and export collections with DSpace. How that works is something I will be interested in exploring further.