9. A precision search engine comprising: a processor that controls the precision search engine; an input interface that receives a full-text search request; a profiler that transforms the full-text search request into a graphical profile that is a graphical representation of key terms in the full-text search request; a searcher that searches one or more databases based on the graphical profile to return search results; an entity extractor that extracts entities from the search results that are not included in the graphical profile as a first set of suggested modifications to the graphical profile; and an information extractor that extracts concepts from the search results that are not included in the graphical profile but are included in an operational taxonomy as a second set of suggested modifications to the graphical profile.
9. A precision search engine comprising: a processor that controls the precision search engine; an input interface that receives a full-text search request; a profiler that transforms the full-text search request into a graphical profile that is a graphical representation of key terms in the full-text search request; a searcher that searches one or more databases based on the graphical profile to return search results; an entity extractor that extracts entities from the search results that are not included in the graphical profile as a first set of suggested modifications to the graphical profile; and an information extractor that extracts concepts from the search results that are not included in the graphical profile but are included in an operational taxonomy as a second set of suggested modifications to the graphical profile. 13. The precision search engine according to claim 9 , further comprising: an XML content tagger that assigns XML content tags to the key terms in the graphical profile based on the operational taxonomy and updates the operational taxonomy to include any key terms in the graphical profile that are not located in the operational taxonomy.