A Hierarchical Dirichlet Language Model - David MacKay et al. (1994)
http://citeseer.ist.psu.edu/mackay94hierarchical.html
2-gram, 1-gram の線形補間式スムージングの根拠づけ。
Any rational predictive procnnedure can be made Bayesian.
..., the aim of this pare is to discover what implicit probabilistic model the above procedure can be related to.<<