Peter Clark - Working Notes

These working notes are unpublished documents, giving informal summaries and discussions of various research issues. They are pre-publication material and of varying quality, and some of the ideas have since been superceded. A brief description of their contents is given below.

If you unable to download or print a paper, and would like a hard-copy, email me (peter.e.clark@boeing.com) with your postal address and I'll be happy to send a copy to you.

28. Do Scripts Solve NLP? (2008) A discussion on the use of scripts to understand the MUC-3 kidnapping articles. (PDF).
27. Representing "improvement": A Short Study on an RTE Example (2007). (Plain text file). A discussion on how to represent the notion of "improve" and "better", set in the context of language processing (textual entailment).
26. Making Sense of Sentences (2001). (Powerpoint). Some examples of trying to align variations of an input sentence with background knowledge (PowerPoint format)
25. Reference Resolution and Views (2001). (Postscript, PDF). How background knowledge might be used to resolve indirect references in text.
24. From Natural Language to KM Representations (2001). (Postscript, PDF). Some extremely preliminary thoughts. The toy demo code is also available here.
23. Concept Variation and Example Generation: Some Preliminary Thoughts (2001). (Postscript, PDF).
22. More Thoughts on Views (2001). (Postscript, PDF). Some further, assorted thoughts on the notion of `views' in a KB. Co-authored with John Thompson and the UT KB group.
21. A Proposal for a Process Specification Language (2001). (Powerpoint). Co-authored with John Thompson. Presents some key concepts and examples for representing processes and their executions in KM. This working note is in the form of a PowerPoint presentation.
20. Understanding Role Concepts (2000). (Postscript, PDF). This note gives a new discussion of role concepts, superceding the earlier (and in places erroneous) Working Note number 11. This working note is currently being revised and will appear shortly.
19. Using Views in a Knowledge Base (2000). (Postscript, PDF). Discusses the notion of "views", namely explicit representations of how general concepts can be applied to more domain-specific concepts. Co-authored with John Thompson, Ken Barker, James Fan, Bruce Porter, Dan Tecuci, Peter Yeh.
18. Constructing Scripts Compositionally: A Molecular Biology Example (2000). (Postscript, PDF). This note follows on from Working Note 17, to provide another example (with less discussion), this one from the molecular biology domain about how a virus works. (The KM KBs repeated in this note are bioex-classes.km and bioex-prototypes.km, and the graphlet databases is bioex.graphlets).
17. $RESTAURANT re-visited: A KM Implementation of a Compositional Approach (2000). (Postscript, PDF). A worked KM example of a familiar AI problem. This paper also compares class-based and prototype-based styles in KM. (The KM KBs repeated in this note are restaurant-classes.km and restaurant-prototypes.km, and the graphlets database is restaurant.graphlets).
16. Translating from CCALC into KM: An Example (1999). (Postscript, PDF). Comparison of two representation languages, CCALC and KM, for a simple problem. Co-authored with Joohyung Lee, Vladimir Lifschitz, and Bruce Porter.
15. From Text to Paragraph Representations. (1999). (Postscript, PDF). A discussion of the gap between NLP-generated semantic graphs, and a fuller representation of meaning, for a short paragraph of text.
14. Story Generation and Aviation Incident Representation (1999). (Postscript, PDF). Discusses the representation and generation of aviation incident `stories' (also: Prolog code talespin.pl).
13. Knowledge Patterns (1998). (Postscript, PDF). A discussion of components as theory `patterns' or `templates', which get instantiated (`morphed') in various ways for reasoning.
12. More on Components (1998). (Postscript, PDF). A more detailed discussion of component data-structures and composition.
11. Should Role Concepts be Included in a Taxonomy? (1998). (Postscript, PDF). A brief discussion of how to place `role concepts' (eg. Teacher, Producer) in a taxonomy.
10. Requirements for a Knowledge Representation System (1996). (Postscript, PDF). An attempt to enumerate general requirements for a KR system, with some example representational challenges.
9. Representing Conceptual Graphs in Algernon (1996). (Postscript, PDF). A discussion of conceptual graphs, and how they might be represented in the KR language Algernon.
8. The Help-Desk Assistant Project (1996). (Postscript, PDF). A pictorial overview of the DCE Help-Desk Project. (0.8MB compressed, uncompresses to 26MB due to color images). Also see the Web pages here.
7. Object Descriptions Revisited (1995). (Postscript, PDF). A view of components as a self-contained system of relationships, with a clearer delineation. Also see the AAAI'97 paper for the evolution of this theme.
6. Constructing Scripts from Components (1995). (Postscript, PDF). Describes representing stereotypical action sequences (`scripts') compositionally, employing ideas from Batory's GenVoca approach to software composition.
5. KI Revisited (1995). (Postscript, PDF). An overview and discussion of Ken Murray's KI system for Knowledge Integration.
4. Building Action Descriptions from Components (1995). (Postscript, PDF). Describes representing STRIPS-style actions compositionally.
3. Concept Construction as Constraint Relaxation (1995). (Postscript, PDF). Thoughts on dealing with contradictions between components during composition. (also see builder.tar.Z - LIFE code)
2. Components and Contexts (1995). (Postscript, PDF). An exporation of connections between the idea of components, contexts, composition, and problem-solving.
1. Building Concepts from Components (1994). (Postscript, PDF). Initial thoughts on representations as compositions, visualized as graph superposition.

peter.e.clark@boeing.com