The Publishing Research Consortium has released Journal Article Mining: A Research Study into Practices, Policies, Plans. . . and Promises.
Here's an excerpt:
This study, carried out between February and May 2011, aims to provide an overview of current practices, players, policies, plans and expectations for text mining and data mining of content in academic journals. The research consisted of a series of 29 interviews with experts and people working on content mining and was concluded by a survey among scholarly publishers.