Abbott, A. 1990. A primer on sequence methods. Organization Science 1: 375-92.Following the release of PIF version 1.1, PIF developments are expected to take the following course. First, we plan to coordinate further development of PIF with other knowledge sharing projects so as to produce compatibility, if not convergence, among the metamodels produced. We have started exchanging information with the International Workflow Management Coalition (http://www.aiai.ed.ac.uk/WfMC ), whose goal is to produce interoperability among work flow applications. We have been also talking to the people in the Knowledge Sharing Initiatives (Neches et al. 1991), which has produced KIF (Knowledge Interchange Format) described earlier, tools and protocols for sharing knowledge bases, and Web-based ontology libraries among other things. We plan to intensify these coordination efforts through more structured and active forms such as workshops and regular meetings.Second, we plan to elaborate on the PIF extension mechanism. We need to discuss and work out the details on such issues as who can propose and accept PSV modules in which domain and how the modules should be named, registered, organized, and accessed. We also need to carefully lay out the space of PSV modules by identifying an initial set of generally useful ones extending the PIF-CORE. Again, this work will require close interactions with the other knowledge sharing groups and experts in various domains. We hope to pursue this objective as a part of pursuing the first objective of coordination with other groups.In order to use PIF to share process descriptions automatically, we need a PIF-translator for each of the local process representations involved. For example, each of the groups represented in the PIF Working Group built a translator for translating between PIF 1.0 and its own representation. Building PIF-translators is ultimately the responsibility of individual groups who want to use PIF.
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