Page Comparison

ATTENDEES: Wendy, Jay, Larry, Dan, Oliver, Kelly

Workflows:
Results of Jay's review of workflows as a basic realization of Process. Need to capture transformation as ETL's rather than statistical packages. DDI4 metadata in workflows used to try out and test work in PENTAHO. Using this to identify any new or modified classes for workflow. ComputationAction is one of the subtypes of Act (others are related instrument components for a data capture instrument). It can capture code. What is needed is a means of capturing a clear structured description in XML. The approach being used instead of capturing code, is the creation of XML that is fed into a machine to run the recode.

PENTAHO etc. start with metadata and produce the transformation using that as a driver. Suggest the use of a MetadataDrivenAction. Add the ability to add a correspondence table which would hold the relationships used for recode. The user creates the correspondence table (ex. the IPUMS transformation table). Addresses Joins, recodes, renames

Question: Are you aiming at being able to roundtrip and generate the PENTAHO from the DDI? Yes, we can do that. It's JAVA based. These systems also support formulas and can run scripts. They still want to use their statistical packages to do certain things. Don't want to do statistical analysis in a data management environment. Every time they changed data management they had to rewrite the STATA code because no one could understand another's code. If you capture the algorithm and generate the code as opposed to trying to derive the algorithm from the code. You can see what is going on within the eventual code.

Jay will send to Wendy and Wendy will put in to verify that what Jay is proposing is clear.

LION content:
reviewed and agreed on package/view dispensation DMT-140

Jay to send Kelly a write up of the decisions made in Dagstuhl regarding the logical data description, some of which have not yet made it into the model. Wendy to follow up with Jay about creating an issue for integrating these decisions in the model.