Direct Maximization of Average Precision by Hill-Climbing, with a Comparison to a Maximum Entropy Approach William Morgan author Warren Greiff author John Henderson author 2004-may 2 - may 7 text Proceedings of HLT-NAACL 2004: Short Papers Association for Computational Linguistics Boston, Massachusetts, USA conference publication morgan-etal-2004-direct https://aclanthology.org/N04-4024/ 2004-may 2 - may 7 93 96