The PIF Process Interchange Format and Framework

The PIF Process Interchange Format and Framework

Jintae Lee, Gregg Yost and the PIF Working Group[1]
Version 1.0

December 22, 1994

Table of Contents
1. Abstract
2. Introduction
3. History and current status
4. PIF
5. Alphabetic Class Reference
6. Extending PIF
7. Appendix A: PIF Syntax
8. Appendix B: An Example PIF File
9. References

9. References

Genesereth, M. & Fikes, R. (1992). Knowledge Interchange Format v.3 Reference Manual. Available as a postscript file via anonymous ftp from

Gruber, T. (1993). Ontolingua: A translation approach to portable ontology specifications. Knowledge Acquisition, 5(2), 199-200. Available via anonymous ftp from

Lee, J. & Malone, T. (1990). Partially Shared Views: A scheme for communicating between groups using different type hierarchies. ACM Transactions on Information Systems, 8(1), 1-26.

Neches et al. (1991). Enabling technology for knowledge sharing. AI Magazine, 12(3), 16-36.

Steele, G. (1990). Common Lisp: The language. Second edition. Digital Press.

[1] The members of the PIF Working Group are Michael Gruninger (Department of Industrial Engineering, University of Toronto,, Yan Jin (Civil Engineering Department, Stanford University,, Jintae Lee (Information & Computer Sciences Department, University of Hawaii,, Thomas Malone (Center for Coordination Science, MIT,, Gregg Yost (Corporate Research, Digital Equipment Corporation,, and Gilad Zlotkin (Center for Coordination Science, MIT, Address comments and correspondence to the PIF Working Group,

[2] If the target representation happens to be PIF (albeit Group A's variant of it), the uninterpretable attributes would be stored as text in the User-Attribute attribute, which all PIF entities have.

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