25. A computer-implemented method for identifying information to be added to an author profile, the author profile identifying documents classified as being authored by the author, and the method comprising: assigning each document from a plurality of documents to one or more document groups, wherein each document is associated with one or more respective author names, wherein each of the document groups includes documents associated with a respective one of the author names, and wherein the plurality of documents includes documents having authors associated with multiple author names; receiving from a user a name input that specifies an input author name of a particular author and one or more items of author information characterizing the particular author; generating a query that specifies the input author name and the one or more items of author information; obtaining search results that identify one or more result documents that satisfy the query; ranking the one or more document groups based on how many result documents identified by the search results are included in each of the one or more document groups, the ranking favoring document groups having more result documents from the search results over document groups having fewer result documents from the search results; and assigning to a particular author profile for the particular author one or more document groups based on the ranking, the particular author profile identifying documents classified as being authored by the particular author.
25. A computer-implemented method for identifying information to be added to an author profile, the author profile identifying documents classified as being authored by the author, and the method comprising: assigning each document from a plurality of documents to one or more document groups, wherein each document is associated with one or more respective author names, wherein each of the document groups includes documents associated with a respective one of the author names, and wherein the plurality of documents includes documents having authors associated with multiple author names; receiving from a user a name input that specifies an input author name of a particular author and one or more items of author information characterizing the particular author; generating a query that specifies the input author name and the one or more items of author information; obtaining search results that identify one or more result documents that satisfy the query; ranking the one or more document groups based on how many result documents identified by the search results are included in each of the one or more document groups, the ranking favoring document groups having more result documents from the search results over document groups having fewer result documents from the search results; and assigning to a particular author profile for the particular author one or more document groups based on the ranking, the particular author profile identifying documents classified as being authored by the particular author. 29. The computer-implemented method of claim 25 , wherein assigning each document from a plurality of documents to one or more document groups comprises: assigning the documents based on one or more features of the documents, wherein the one or more features include at least one of: title; place of publication; other documents referenced by the documents; other documents that reference the documents; or names of authors.