1. A framework for thinking about mechanisms Range of possible implementation mechanisms Some criteria for assessing various mechanisms Holding tank description Applying criteria for assessment to the holding tank (2 slides)

2. Possible Mechanisms for Improving Quality by Resource Lifecycle More focused selection criteria: from filter to guidelines Co-development of collections with user communities Development of thematic collections; responsibility, ownership, persistence Pre-cataloging review of ‘gray’ cases Encapsulation of context at design times: wrap questionable in content guiding use QA of resources in Broad Collection Review board for marginal cases Holding Tank Annotation services / Peer reviewing De-accessioning request form

3. Some Criteria for Assessing Mechanisms (in random order) Technical implementation Social implementation Community Participation: opportunities for versus required to be successful Cataloging and QA Cost Maintenance Cost Scalability Preserving annotations during harvesting Proactively supports collection development Helps to create a collection that follows the selection criteria

4. Holding Tank Description Post-cataloging Provisional accessioning (30 days) What’s new area Available, but flagged, in discovery No comments – automatic ingestion Comments – someone has to review and pass a verdict

5. Applying Criteria to Holding Tank Technical Implementation Basic technical substrate is being implemented to support “what’s new” in CRS Social Implementation Issues with asking collections (including NSDL- funded collections) to internalize DLESE rejections to support reharvesting How are holding tank reviewers mobilized to respond to new resources Registration Commenting How are comments assessed and by whom?

6. Applying Criteria to Holding Tank (part 2) Full cataloging and QA efforts invested in resources that are ultimately rejected Maintenance cost for 30 day holding period (e.g. applying link checking) Scalability: O(n) depends on applying to all collections vs. community collection Provisional items unavailable for harvesting No explicit support for building collections Depends on the successful implementation of the mechanisms