Electronic device for correcting speech input of user and operating method thereof

An electronic device for correcting a speech input, the electronic device comprising:

• an input interface configured to receive a speech signal;
• a storage storing a program including one or more instructions;
• and
• a processor configured to execute the one or more instructions of the program stored in the storage to:
• receive a first speech signal via the input interface;
• obtain first text by converting the first speech signal to text;
• obtain an intent of the first speech signal and a confidence score of the intent, by inputting the first text to a natural language understanding model;
• identify a plurality of correction candidate semantic elements capable of being correction targets in the first text, by inputting the first text, the intent, and the confidence score of the intent to an artificial intelligence model;
• comparing the confidence score of the intent with a first threshold value;
• determining a correction priority of the plurality of correction candidate semantic elements, based on a result of the comparing the confidence score with the first threshold value;
• receive a second speech signal via the input interface;
• obtain second text by converting the second speech signal to text;
• identify whether the second speech signal is a speech signal for correcting the first text, by analyzing the second text;
• based on identifying the second speech signal is the speech signal for correcting the first text, compare the plurality of correction candidate semantic elements in the first text with a semantic element in the second text, based on the confidence score;
• and
• correct at least one of the plurality of correction candidate semantic elements in the first text, based on a result of comparing the plurality of correction candidate semantic elements in the first text with the semantic element in the second text,
• wherein the first threshold value is determined based on another confidence score of a speech signal input to the electronic device before the first speech signal corresponding to the first text is received, and
• wherein an intent of the speech sig nal:
• el ect onic device before the first speech signal is received is of a same domain as the intent of the first speech signal.

A non-transitory computer-readable recording medium having recorded thereon a program for executing, by an electronic device, a method comprising:

• receiving a first speech signal;
• obtaining first text by converting the first speech signal to text;
• obtaining an intent of the first speech signal and a confidence score of the intent, by inputting the first text to a natural language understanding model;
• identifying a plurality of correction candidate semantic elements capable of being correction targets in the first text, by inputting the first text, the intent, and the confidence score of the intent to an artificial intelligence model;
• comparing the confidence score of the intent with a first threshold value;
• determining a correction priority of the plurality of correction candidate semantic elements, based on a result of the comparing the confidence score with the first threshold value;
• receiving a second speech signal;
• obtaining second text by converting the second speech signal to text;
• identifying whether the second speech signal is a speech signal for correcting the first text, by analyzing the second text;
• based identifying on the second speech signal being the speech signal for correcting the first text, comparing the plurality of correction candidate semantic elements in the first text with a semantic element in the second text, based on the confidence score;
• and
• correcting at least one of the plurality of correction candidate semantic elements in the first text, based on a result of the comparing the plurality of correction candidate semantic elements in the first text with the semantic element in the second text,
• wherein the first threshold value is determined based on another confidence score of a speech signal input to the electronic device before the first speech signal corresponding to the first text is received, and
• wherein an intent of the speech input to the electronic before the first speech signal is received is of a same domain as the intent of the first speech signal.