Training and Evaluation We used Averaged Perceptron (Collins, 2002) (3 iterations) for training, with five-fold cross-validation.
for example, when splitting a compound noun ブ ラキッシュレッド burakisshureddo, a traditional word segmenter can easily segment this as ブ ラキッ/シュレッド "*blacki shred" since シュレッ ド shureddo "shred" is a known, frequent word.