METHOD AND DEVICE FOR AUTOMATIC ELECTION OF INTERACTIVE TELEVISION CHANNELS BASED ON SPEAKING COMPREHENSION.

摘要

Speech understanding system that serves to receive a pronounced request from a user and processes the request by comparing it with a knowledge base that contains programming information to automatically select a television program, consisting of: a knowledge extractor (16) to receive the information contained in the electronic programming guide (EPG) and process the information to create a program database (18); a speech recognition device (32) to receive the pronounced request and convert it into a text string formed by a plurality of words; a natural language processor (34) that receives the text string and processes the words to solve the semantic content of the request made by the user, the natural language processor (34) locates the meaning of the words in a task framework (60) which includes a plurality of boxes with keywords (70); and a dialog manager (40) that analyzes the task framework (60) to determine whether a sufficient number of keyword boxes (70) have been filled in and request the user additional information to fill in the empty boxes (70), the Dialog manager performs a search in the program database using the keywords that the system has placed in the task frame (60) to select a program, and generates a signal to select the television channel associated with the program in question, characterized in that said dialog manager (40) automatically updates a historical database (54) from the recordings of previous pronounced requests and dialogues, deduces user preferences based on the historical database (54), and classify the questions to ask the user according to their preferences.