Re:Predictive text (Score 3, Interesting)

An unrelated question I was pondering -- do any thumb-texting predictive text devices use predictive method more advanced than Markov chain? (essentially just looking at list of words that start with already typed prefix) That's how it seems to work on all the cell phones I tried. There's enough research out there to make a more advanced system. For instance, a word level Markov chain that offer words that are likely to follow first. Or an approach that would allow better generalization, such as decision tree predictor.