What was the name of the paper that was published on "IEEE Transactions on Pattern Analysis and Machine Intelligence" in 2011?
'IEEE Transactions on Pattern Analysis and Machine Intelligence' is the FullName of journal; 2011 refers to Year = '2011'; name of the paper refers to Title of paper
SELECT T2.Title FROM Journal AS T1 INNER JOIN Paper AS T2 ON T1.Id = T2.JournalId WHERE T1.FullName = 'IEEE Transactions on Pattern Analysis and Machine Intelligence' AND T2.Year = 2011 AND T2.Title <> ''
database name:db_id authors
Author table Author Cols: Id dtype integer, Name dtype text, Affiliation dtype text, 
Conference table Conference Cols: Id dtype integer, ShortName dtype text, FullName dtype text, HomePage dtype text, 
Journal table Journal Cols: Id dtype integer, ShortName dtype text, FullName dtype text, HomePage dtype text, 
Paper table Paper Cols: Id dtype integer, Title dtype text, Year dtype integer, ConferenceId dtype integer, JournalId dtype integer, Keyword dtype text, 
PaperAuthor table PaperAuthor Cols: PaperId dtype integer, AuthorId dtype integer, Name dtype text, Affiliation dtype text, 
