Dynamic deviation
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United States of America Patent
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Jul 29, 2003
Grant Date -
N/A
app pub date -
Nov 30, 1999
filing date -
Nov 30, 1999
priority date (Note) -
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Abstract
A method and related apparatus and software of detecting anomalies in a stream of data values. The method comprises the steps of: receiving a data value on the stream of data; calculating a new weighted average responsive to the received data value, a previously stored weighted average associated with the stream of data, and a decay rate in the range of 0 to 1; and calculating a new measure of deviation from the new weighted average responsive to the new weighted average, the data value, a previously stored measure of deviation associated with the stream of data, and the decay rate.
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