1. A method comprising: receiving, by a computing device, a first collection of documents and/or objects determined by a first process to be relevant to a keyword, wherein the first process comprises searching a multiplicity of documents and/or objects; processing, by the computing device, the first collection of documents and/or objects to extract one or more keyword characterizations from within at least one of the documents and/or objects of the first collection, wherein the processing comprises generating, by the computing device, a spectrum of n-grams to characterize the one or more keywords, where n is an integer equal to or greater than 1; and receiving, by the computing device, a second collection of documents and/or objects determined by a second process to be relevant to the one or more keyword characterizations, wherein the second process comprises using at least one of the one or more keyword characterizations as proxies for the keyword.