15. The method of claim 9 , further comprising determining a confidence level for each of the first at least subset of the plurality of nodes associated with the website navigation category diagram based at least in part on the historical user operation data associated with the user.
9. A method, comprising: receiving a search query input at a search box from a user; and in response to the search query: obtaining historical user operation data associated with the user; generating a plurality of navigation hierarchical structure diagrams based on a website navigation category diagram and the historical user operation data associated with the user, wherein: the website navigation category diagram comprises a plurality of nodes; the plurality of navigation hierarchical structure diagrams comprises a first navigation hierarchical structure diagram and a second navigation hierarchical structure diagram, wherein the first navigation hierarchical structure diagram of the plurality of navigation hierarchical structure diagrams is generated based at least in part on one or more of the following binding conditions: nodes associated with the first navigation hierarchical structure diagram with a corresponding confidence level greater than a preset threshold value are included in a predetermined level of the first navigation hierarchical structure diagram; a total number of nodes in a level of the first navigation hierarchical structure diagram is no greater than a number of nodes for which associated information is permitted to be displayed at a web page; and for a particular node that appears more frequently in the first navigation hierarchical structure diagram more than a substantially similar node appears at the website navigation category diagram, at least one copy of that particular node is eliminated; the first navigation hierarchical structure diagram comprises a first at least subset of the plurality of nodes and the second navigation hierarchical structure diagram comprises a second at least subset of the plurality of nodes; and each of the first at least subset of the plurality of nodes and the second at least subset of the plurality of nodes is different from the website navigation category diagram; determining a plurality of searching costs corresponding to respective ones of the plurality of navigation hierarchical structure diagrams based at least in part on the historical user operation data associated with the user; selecting a selected navigation hierarchical structure diagram of the plurality of navigation hierarchical structure diagrams based on the plurality of searching costs corresponding to respective ones of the plurality of navigation hierarchical structure diagrams; and implementing, using one or more processors, at least in part a website navigation process using the selected navigation hierarchical structure diagram.