Teemu Ruokolainen. Applying Piecewise Approximation in Perceptron Training of Conditional Random Fields. In Jaakko Hollmén, Frank Klawonn, Allan Tucker, editors, Advances in Intelligent Data Analysis XI - 11th International Symposium, IDA 2012, Helsinki, Finland, October 25-27, 2012. Proceedings. Volume 7619 of Lecture Notes in Computer Science, pages 324-333, Springer, 2012. [doi]