{
  "$type": "site.standard.document",
  "description": "A method of performing a similarity search in a navigation device data base uses a metric index structure. The index structure includes a plurality of nodes. When a query object (51) is received, a node of the index structure which is associated with at least one object (52, 55, 59, 60) is…",
  "path": "/patents/998897",
  "publishedAt": "2012-08-29T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/26",
    "HARMAN BECKER AUTOMOTIVE SYS [DE]"
  ],
  "textContent": "A method of performing a similarity search in a navigation device data base uses a metric index structure. The index structure includes a plurality of nodes. When a query object (51) is received, a node of the index structure which is associated with at least one object (52, 55, 59, 60) is accessed. A distance (65, 66) between the query object (51) and the at least one object (52, 55, 59, 60)is determined in accordance with a distance metric. Based on the determined distance, another node of the index structure is selectively accessed.",
  "title": "Method of searching a data base, navigation device and method of generating an index structure"
}