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Science 29 May 1987:
Vol. 236. no. 4805, pp. 1092 - 1094
DOI: 10.1126/science.236.4805.1092
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Articles

Observation of Phase Transitions in Spreading Activation Networks

JEFF SHRAGER 1, TAD HOGG 1, and BERNARDO A. HUBERMAN 1

1 Intelligent Systems Laboratory, Xerox Palo Alto Research Center, Palo Alto, CA 94304.

Phase transitions, similar to those seen in physical systems, are observed in spreading activation networks. Such networks are used both in theories of cognition and in artificial intelligence applications. This result confirms a predicted abrupt behavioral change as either the topology of the network or the activation parameters are varied across phase boundaries.

Submitted on October 27, 1986
Accepted on April 10, 1987


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