Abstract: A method for indexing a plurality of structures, which are derived from a plurality of externalizations of users' mental models, is provided. The method comprises receiving at least one of the plurality of structures; analyzing the at least one structure according to a predetermined principle of normalization to obtain a plurality of index analysis results in a form of a plurality of tuples comprising a plurality of elements and/or a plurality of relations thereof related to the plurality of structures; and generating an index store according to the index analysis result; wherein each externalized relation indicates each externalized sequence from one of externalized elements to another one of the externalized elements; wherein each relation indicates each sequence from one of a plurality of elements to another one of the plurality of elements.

Abstract: A method for searching an intended path among user mental models comprises retrieving a plurality of mental models from a plurality of users; receiving at least one intended path from a search user; searching the at least one intended path among the plurality of mental models in a database; generating a search report in a form of a path list, wherein the path list further comprises relevance data correlated with each path; wherein the mental models from the plurality of users is obtained via a mind map, a concept map, a knowledge map, a diagram, a flow, a chart or a category of each of the plurality of users.

Abstract: The present invention discloses an interactive broadcasting method for a broadcasting system. The interactive broadcasting method includes emitting, by a broadcasting station of the broadcasting system, radio signals carrying a broadcast program via an air interface; receiving, by a broadcast service receiving module corresponding to the broadcasting station, the broadcast program via the air interface and a command for triggering a service introduced in the broadcast program; sending, by the broadcast service receiving module, a request related to the service to a service management device via a network-based interface; providing, by the service management device, the service for the broadcast service receiving module according to the received request via the network-based interface.

Abstract: A method for indexing a plurality of structures derived from a plurality of externalizations of users' mental modelings is disclosed. The method includes receiving at least one of the plurality of structures; analyzing the structure according to a predetermined principle of normalization to obtain a plurality of index analysis results in a form of a plurality of tuples comprising a plurality of elements and/or a plurality of relations thereof related to the plurality of structures; and obtaining an index store according to the index analysis result.