{
  "$type": "site.standard.document",
  "description": "To improve accuracy of determining whether route elements stored as a history are route elements familiar to the user, a navigation apparatus 100 includes: a passage history storage unit 9a that stores a history of route elements passed in the past; a memory cost determination unit 84 that…",
  "path": "/patents/995372",
  "publishedAt": "2012-12-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/3476",
    "DENSO IT LAB INC [JP]"
  ],
  "textContent": "To improve accuracy of determining whether route elements stored as a history are route elements familiar to the user, a navigation apparatus 100 includes: a passage history storage unit 9a that stores a history of route elements passed in the past; a memory cost determination unit 84 that determines memory costs indicative of how less likely a user still has in mind the route elements stored in the passage history storage unit 9a based on the history stored in the passage history storage unit 9a; a route search unit 85 that searches for a route leading to a destination by combining the route elements to minimize a route cost of the entire route including the memory costs determined by the memory cost determination unit 84; and a navigation unit 86 that performs a route guide in accordance with the route searched by the route search unit 85.",
  "title": "Navigation apparatus, navigation method, and navigation program"
}