Metadata quality

Another article establishes the importance of metadata quality or consistency for retrieval. This is an issue we are facing more as metadata is aggregated from different metadata regimes.

The OAI Protocol for Metadata Harvesting has deservedly been hailed as an important tool in the development of digital libraries from multiple, dispersed digital collections. However, it is a tool designed only to easily move metadata from one place to another. To provide useful aggregation of metadata, it is clear that a non-trivial amount of mediation must take place. This pilot study helps to establish a baseline of metadata mediation that service providers may wish to consider. [Experiences of Educators Using a Portal of Aggregated Metadata: Shreeves and Kirkham: JoDI]
The group at UIUC continue to do interesting work.

Comments: 3

Oct 04, 2004
Charly Bauer

The conclusion is important:

"A wide range of programmatic solutions could be undertaken to improve user interactions with the aggregated metadata, for instance, applying more sophisticated indexing tools; building more robust search features; and ranking of results based on frequency of keyword appearance in a resource or its metadata. The implementation, through automated means, of controlled vocabularies for certain fields, such as place names and personal names, would improve both recall and relevance of results. However, enforcing a controlled vocabulary for subject terms among such a diverse range of data providers is not likely to be feasible."


Oct 04, 2004
Thom Hickey

I hope they can come up with better ranking than 'frequency of keyword appearance'. Some sort of ranking for the importance of the material itself is needed.


Oct 04, 2004
Charly Bauer

Agreed. Generally what I inferred was that human mediation was not practical, and so automated means are suggested.