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In this task, you will be presented with a context from an academic paper and a question separated with a 
. You have to answer the question based on the context.

Spelling correction tests described in literature have tended to focus on one approach applied to a specific corpus. Limited examples include works on spellchecking mammography reports and tweets BIBREF7 , BIBREF4 . These works emphasized the importance of tailoring correction systems to specific problems of corpora they are applied to. For example, mammography reports suffer from poor typing, which in this case is a repetitive work done in relative hurry. Tweets, on the other hand, tend to contain emoticons and neologisms that can trick solutions based on rules and dictionaries, such as LanguageTool. The latter is, by itself, fairly well suited for Polish texts, since a number of extensions to the structure of this application was inspired by problems with morphology of Polish language BIBREF3 . 
 Question: Which specific error correction solutions have been proposed for specialized corpora in the past?
Output:
spellchecking mammography reports and tweets BIBREF7 , BIBREF4