Strategies for Natural Language Processing

By Wendy G. Lehnert; Martin H. Ringle | Go to book overview

understand only situations for which it has a sketchy script, and there are some situations for which no sketchy script can be written. For example, FRUMP cannot understand editorials, which often explain a heretofore unrealized consequence of adopting the right or wrong position. There is no way to anticipate these novel, unforeseen ramifications at the time the sketchy script is written.

However, this does not argue that FRUMP's organization cannot be applied to a larger class of articles. It is a weakness of FRUMP's PREDICTOR module, not a breakdown in the PREDICTOR/SUBSTANTIATOR dialogue, that makes understanding these articles impossible for FRUMP. A more powerful PREDICTOR that can provide the SUBSTANTIATOR module with accurate characterizations of possible inputs for these stories is needed. With a more powerful PREDICTOR, FRUMP-like parsing could be applied to a much larger class of text inputs.


ACKNOWLEDGMENTS

This work was supported in part by the Advanced Research Projects Agency of the Department of Defense and monitored by the Office of Naval Research under contract N00014-75-C-1111.


REFERENCES

Bobrow D. G., Kaplan R. M., Kay M., Norman D. A., Thompson H., & Winograd T. ( 1977) "GUS, a frame driven dialog system". Artificial Intelligence, 8(No. 1).

Brown J. S., & Burton R. R. ( 1975) "Multiple representations of knowledge for tutorial reasoning". In D. Bobrow & A. Collins (Eds.), Representation and understanding. New York: Academic Press.

Burton R. R. ( 1976) "Semantic grammar: An engineering technique for constructing natural language understanding systems" (BBN Report 3453, ICAI Report 3). Cambridge, Mass.: Boll, Beranek, and Newman.

Charniak E. ( 1972) Toward a model of children's story comprehension (AITR-226). Artificial Intelligence Laboratory, MIT, Cambridge, Mass.

Charniak E. ( 1977) "Ms. Malaprop, a language comprehension program". Proceedings of the Fifth IJCAI, Cambridge, Mass.

Cullingford R. ( 1978) Script application: Computer understanding of newspaper stories. Doctoral thesis, Yale University, New Haven.

DeJong G. ( 1979) Skimming stories in real time. Doctoral thesis, Yale University, New Haven.

Epstein M. N., & Walker D. E. ( 1978) Natural language access to a melanoma data base (SRI Tech. Note 171, Menlo Park, Calif.).

Kaplan R. M. ( 1975) "On process models for sentence analysis". In D. A. Norman & D. E. Rumelhart (Eds.), Explorations in cognition. San Francisco: W. H. Freeman.

Marcus M. ( 1977) "A theory of syntactic recognition for natural language". Unpublished doctoral thesis, MIT, Cambridge, Mass.

McGuire R. ( 1977) "Concepts and memory in natural language generation". Unpublished internal paper, Yale Al Group.

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