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(→Smoothing: note weight for weighted smoothing) |
(→Smoothing: caption figures) |
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A weight less than 1 is typically chosen. The lower the weight, the less smooth a single pass will be, so typically more passes are run for lower weights which allows information (data) to propagate from further away nodes. The average is still heavily weighted towards local nodes, but less dramatically so. | A weight less than 1 is typically chosen. The lower the weight, the less smooth a single pass will be, so typically more passes are run for lower weights which allows information (data) to propagate from further away nodes. The average is still heavily weighted towards local nodes, but less dramatically so. | ||
To illustrate how these filters behave, first apply them to a line that rises linearly from 3 to 13 but has -/+ 3 variation for odd/even numbers, respectively. Assuming that this is "noise" (it is high frequency), then smoothing should approximate a linear rise. | |||
[[File:Saw-three.png]] | [[File:Saw-three.png]] |
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