@incollection{piskorski2013information, abstract = {In this chapter we present a brief overview of Information Extraction, which is an area of natural language processing that deals with finding factual information in free text. In formal terms, }, author = {Piskorski, Jakub and Yangarber, Roman}, booktitle = {Multi-source, Multilingual Information Extraction and Summarization}, doi = {10.1007/978-3-642-28569-1_2}, editor = {Poibeau, Thierry and Saggion, Horacio and Piskorski, Jakub and Yangarber, Roman}, interhash = {276145faeb3b45461f09f6ae5aabef5e}, intrahash = {55c1de993e15515d35b68a512088d607}, isbn = {978-3-642-28568-4}, language = {English}, pages = {23-49}, publisher = {Springer Berlin Heidelberg}, series = {Theory and Applications of Natural Language Processing}, title = {Information Extraction: Past, Present and Future}, url = {http://dx.doi.org/10.1007/978-3-642-28569-1_2}, year = 2013 }