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Scientific and Statistical Database Management, International Conference on (1997)
Olympia, WA
Aug. 11, 1997 to Aug. 13, 1997
ISBN: 0-8186-7952-2
pp: 12
Jeffrey A. Goldman , University of California, Los Angeles
D. Stott Parker , University of California, Los Angeles
Wesley W. Chu , University of California, Los Angeles
ABSTRACT
In this paper, we take a real world application from a text database and present a case history. The techniques ultimately led to a discovery contradicting an accepted paradigm in seismology. Using simple, tailored, keyword extraction, we examined a text collection of earthquake data. A discovery was made when an unusual pattern emerged from the text. We then tested a more comprehensive numerical database, treating the the text discovery as a hypothesis. It was verified using a standard chi-square statistic. The hypothesis was significant earthquakes in the longitude regions that include California, occur more often in the morning hours than any other time of day.
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CITATION

W. W. Chu, J. A. Goldman and D. S. Parker, "Knowledge Discovery in an Earthquake Text Database: Correlation between Significant Earthquakes and the Time of Day," Scientific and Statistical Database Management, International Conference on(SSDBM), Olympia, WA, 1997, pp. 12.
doi:10.1109/SSDM.1997.621144
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