'''Originally Posted By: fchan'''

1. What is document eliteness? How is it estimated in DFR? How is DFR modified to handled document-length normalization<br><br>document eliteness - A document is considered elite for a term, if the document is about the topic associated with the term.<br><br>In divergence from randomness (DFR), a generalized formula can be of the following...<br><br>Code: (1 - P2)(-logP1), where P2 is the part associated with "eliteness".<br>To calculate P2, we can use a modified version of "LaPlace's Theorum"<br><br>Code: (m/m+1), where we substitute m -> f(t,d)<br>to give us...<br><br>Code: P2 = f(t,d)/(f(t,d) + 1)<br>The formula above assumes all documents are of the same length so we can apply some form of normalization to factor in documents of different lengths within our corpus.<br><br>Therefore, we can modify our version of "LaPlace's Theroum" with the following...<br><br>Code: f'(t,d) = f(t,d) * (log(1+ (lavg/ld)))<br>this will accommodate fluctuations in document lengths. <br><br>Team members:<br>Frank Chan<br>Ranjith Jidigam<br>Hardik Rana<br>Nitin Tenali