出典:Wikipedia
出典:『Wikipedia』 (2011/06/23 03:02 UTC 版)
A conditional random field (CRF) is a type of discriminative undirected probabilistic graphical model. It is most often used for labeling or parsing of sequential data, such as natural language text or biological sequences and computer vision . Specifically, CRFs find applications in shallow parsing , named entity recognition and gene finding, among other tasks, being an alternative to the related hidden Markov models. In computer vision, CRFs are often used for image segmentation, object recognition and as a general approach to combine features from different sources.