1. Supplemental Data: Questions and Considerations Alexander ( Sasha ) Schwarzman Information Systems Analyst American Geophysical Union (AGU) Co-chair, TWG NISO / NFAIS Supplemental Journal Article Material Working Group

2. Contents Supplemental material: Deluge Integral, Additional, Related: So what? NISO/NFAIS WG: Whats in and out of scope? TWG Charge Metadata: Basics Metadata: Complexities More info and contact

3. Deluge

4. Integral, Additional, Related… whatever. Who cares anyway? You should! Designation has consequences: Peer review Editing; Markup; Discoverability / search Presentation / display Hosting; Preservation / longevity Migration/conversion Repurposing / usability Processing fee

5. False pretenses: Integral as if Additional

6. Scope

7. TWG Charge Metadata, persistent identifiers, granularity Citing, linking to and from, references within Archiving, preservation, migration Packaging, exchange, delivery Accessibility

8. Metadata: Basics Article being supplemented (main article) Function: integral, additional, related (?) Descriptive metadata IDs, contributors, title, language, summary, subject descriptors, rights/permissions, funding, accessibility, etc. Physical metadata File name, format, size, date, mimetype/subtype, created with, application requirements, validity check, ext. link, etc.

9. Metadata: Complexities Heterogeneity: a single supplemental ZIP, TAR, or PDF may contain multiple files. Some may be Integral; others, Additional. Content granularity: assign metadata to supplemental material as a whole? Individual objects? Object groups? All? Relationship granularity: identify relationship to the article as a whole or to its individual components (to Table 4, to Fig. 7)? Equivalency relationship: a single chemical structure or a protein may have multiple representations, e.g., a table, a figure, and an interactive application. One may be primary; each may have different preservation requirements.

10. More info and contact http://www.niso.org/workrooms/supplemental http://www.agu.org/dtd/Presentations/sup-mat/ sschwarzman@agu.org