"interface in org.apache.nutch.scoring">ScoringFilter</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>url</code> - url of the page</dd><dd><code>old</code> - original datum, with original score. May be null if this is a newly
 discovered page. If not null, filters should use score values from this parameter
 as the starting values - the <code>datum</code> parameter may contain values that are
 no longer valid, if other updates occured between generation and this update.</dd><dd><co