ELECTRONIC DEVICE AND CONTROL METHOD THEREFOR

An electronic device is disclosed. The electronic device comprises a mic; a memory for storing at least one instruction; and a processor connected to the mic and the memory so as to control the electronic device. The processor, by executing the at least one instruction, may: when a user speech signal is received through the mic, acquire text corresponding to the user speech signal; identify a plurality of sentences included in the acquired text; identify, among a plurality of domains, repective domains corresponding to each of the plurality of sentences; if the degree of similarity between a first sentence and a second sentence having the same domain, among the plurality of sentences, is equal to or higher than a threshold value, acquire, using a first neural network model, a third sentence formed by combining the first sentence and the second sentence; and carry out natural language understanding of the third sentence.