Navigation apparatus, navigation method, and navigation program

A navigation apparatus comprising:na passage history storage unit that stores a history of route elements passed in the past and a user ID of a user who passed each route element in the history of route elements;a memory cost determination unit that determines memory costs indicative of how less likely the user still has in mind the route elements stored in the passage history storage unit based on the history stored in the passage history storage unit;a route search unit 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; anda navigation unit that performs a route guide in accordance with the route searched by the route search unit,wherein the determined memory costs are associated with the user ID,wherein a weight is provided to the history of the route elements stored in the passage history storage unit, and the memory cost determination unit takes the weight into account to determine the memory cost, andwherein the weight is provided based on presence or absence of a landmark near the route element.

A navigation apparatus comprising:na passage history storage unit that stores a history of route elements passed in the past and a user ID of a user who passed each route element in the history of route elements;a memory cost determination unit that determines memory costs indicative of how less likely the user still has in mind the route elements stored in the passage history storage unit based on the history stored in the passage history storage unit;a route search unit that searches for a route leading to a destination; anda navigation unit that performs a route guide in accordance with the route searched by the route search unit, wherein the navigation unit performs the route guide in different guide levels based on the memory costs of the route elements included in the route searched by the route search unit,wherein the determined memory costs are associated with the user ID,wherein a weight is provided to the history of the route elements stored in the passage history storage unit, and the memory cost determination unit takes the weight into account to determine the memory cost, andwherein the weight is provided based on presence or absence of a landmark near the route element.

A navigation method comprising:na passage history storage step of storing a history of route elements passed in the past and a user ID of a user who passed each route element in the history of route elements;a memory cost determination step of determining memory costs indicative of how less likely the user still has in mind the route elements stored in the passage history storage step based on the history stored in the passage history storage step;a route search step of searching for a route leading to a destination by selecting the route elements to minimize a route cost of the entire route including the memory costs determined in the memory cost determination step; anda navigation step of performing a route guide in accordance with the route searched in the route search step,wherein the determined memory costs are associated with the user ID,wherein a weight is provided to the history of the route elements stored in the passage history storage unit, and the memory cost determination unit takes the weight into account to determine the memory cost, andwherein the weight is provided based on presence or absence of a landmark near the route element.

A navigation method comprising:na passage history storage step of storing a history of route elements passed in the past and a user ID of a user who passed each route element in the history of route elements;a memory cost determination step of determining memory costs indicative of how less likely the user still has in mind the route elements stored in the passage history storage step based on the history stored in the passage history storage step;a route search step of searching for a route leading to a destination; anda navigation step of performing a route guide in accordance with the route searched in the route search step, wherein in the navigation step, the route guide is performed in different guide levels based on the memory costs of the route elements included in the route searched in the route search step,wherein the determined memory costs are associated with the user ID,wherein a weight is provided to the history of the route elements stored in the passage history storage unit, and the memory cost determination unit takes the weight into account to determine the memory cost, andwherein the weight is provided based on presence or absence of a landmark near the route element.

A non-transitory computer readable medium having a computer program product causing a computer to execute:na passage history storage step of storing a history of route elements passed in the past and a user ID of a user who passed each route element in the history of route elements;a memory cost determination step of determining memory costs indicative of how less likely the user still has in mind the route elements stored in the passage history storage step based on the history stored in the passage history storage step;a route search step of searching for a route leading to a destination by selecting the route elements to minimize a route cost of the entire route including the memory costs determined in the memory cost determination step; anda navigation step of performing a route guide in accordance with the route searched in the route search step,wherein the determined memory costs are associated with the user ID,wherein a weight is provided to the history of the route elements stored in the passage history storage unit, and the memory cost determination unit takes the weight into account to determine the memory cost, andwherein the weight is provided based on presence or absence of a landmark near the route element.

A non-transitory computer readable medium having a computer program product causing a computer to execute:na passage history storage step of storing a history of route elements passed in the past and a user ID of a user who passed each route element in the history of route elements;a memory cost determination step of determining memory costs indicative of how less likely the user still has in mind the route elements stored in the passage history storage step based on the history stored in the passage history storage step;a route search step of searching for a route leading to a destination; andand a navigation step of performing a route guide in different guide levels in accordance with the route searched in the route search step and based on the memory costs of the route elements included in the route searched in the route search step,wherein the determined memory costs are associated with the user ID,wherein a weight is provided to the history of the route elements stored in the passage history storage unit, and the memory cost determination unit takes the weight into account to determine the memory cost, andwherein the weight is provided based on presence or absence of a landmark near the route element.