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				The tf–idf weight (term frequency–inverse document frequency) is a weight often ... Retrieved from "http://en.wikipedia.org/wiki/Tf%E2%80%93idf" ...			 
			
				
					http://en.wikipedia.org/wiki/Tf-idf				
									
							 
			
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					GoogleSource.it is a simple tool enabling you to compare keywords via their popularity ... WebSource.it! 0 results. 0 results. 0 results. 0 results. 0 results ...				 
				
				
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					Producers of statistics and graphics software.				 
				
				
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					There are millions of people in the United States. How many people have your name? ... The U.S. Census Bureau statistics tell us that there are at least 151,671 ...				 
				
				
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					... TREC Conference series is co-sponsored by the NIST, ... privacy policy / security notice / accessibility statement. disclaimer / FOIA. trec@nist.gov ...				 
				
				
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