Ganesh Ramakrishnan Sachindra Joshi Sreeram Balakrishnan Ashwin Srinivasan Using ILP to Construct Features for Information Extraction from Semi-structured Text. 211-224 2007 ILP http://dx.doi.org/10.1007/978-3-540-78469-2_22 conf/ilp/2007 db/conf/ilp/ilp2007.html#RamakrishnanJBS07