12. A computer-implemented method performed on one or more travelogues comprising: identifying at least one snippet from the one or more travelogues; filtering out one or more noisy context terms from the at least one snippet, the noisy context terms co-occurring with a plurality of locations; extracting a particular location from the at least one snippet; mining a context term which characterizes the particular location from the at least one snippet; calculating a geographic relevance score for the at least one snippet based at least in part on the particular location; calculating a semantic relevance score for the at least one snippet based at least in part on the context term which characterizes the particular location; computing a snippet score based at least in part on the geographic relevance score and the semantic relevance score for the at least one snippet; ranking the at least one snippet based at least in part on the snippet score; and assembling the at least one snippet into a snippet collection.
12. A computer-implemented method performed on one or more travelogues comprising: identifying at least one snippet from the one or more travelogues; filtering out one or more noisy context terms from the at least one snippet, the noisy context terms co-occurring with a plurality of locations; extracting a particular location from the at least one snippet; mining a context term which characterizes the particular location from the at least one snippet; calculating a geographic relevance score for the at least one snippet based at least in part on the particular location; calculating a semantic relevance score for the at least one snippet based at least in part on the context term which characterizes the particular location; computing a snippet score based at least in part on the geographic relevance score and the semantic relevance score for the at least one snippet; ranking the at least one snippet based at least in part on the snippet score; and assembling the at least one snippet into a snippet collection. 14. A method as recited in claim 12 , wherein computing the snippet score based at least in part on the geographic relevance score and the semantic relevance score for the at least one snippet includes determining a quality score based at least in part on snippet length.