| 摘要 |
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for detecting travel information. In one aspect, a method includes receiving a document; annotating detected entities in the document; generating one or more travel leg structures using the annotations, wherein generating the one or more travel leg structures includes determining that one or more annotations match a valid travel schedule; and generating an itinerary from the one or more travel leg structures. |
