8. An article of manufacture comprising: a non-transitory program storage medium readable by a computer, where the medium tangibly embodies one or more programs of instructions executable by a computer to perform a method of document searching, the one or more programs of instructions comprising: instructions for receiving a search query; instructions for retrieving documents based on the search query; instructions for outputting the documents; instructions for receiving user-entered labels for at least some of the documents, the labels being indicative of a relevance of the document to the search query; instructions for training a classifier based on the search query and the user-entered labels; instructions for performing a document classification technique on the documents using the classifier for reclassifying the documents; and instructions for outputting identifiers of at least some of the documents based on the classification thereof.
8. An article of manufacture comprising: a non-transitory program storage medium readable by a computer, where the medium tangibly embodies one or more programs of instructions executable by a computer to perform a method of document searching, the one or more programs of instructions comprising: instructions for receiving a search query; instructions for retrieving documents based on the search query; instructions for outputting the documents; instructions for receiving user-entered labels for at least some of the documents, the labels being indicative of a relevance of the document to the search query; instructions for training a classifier based on the search query and the user-entered labels; instructions for performing a document classification technique on the documents using the classifier for reclassifying the documents; and instructions for outputting identifiers of at least some of the documents based on the classification thereof. 9. The article of manufacture of claim 8 , wherein the document classification technique includes a transductive process.