While lost ancient languages are more than a mere academic inquisitiveness, humans miss a complete knowledge about the people who spoke them. Thus, in an effort to decode such languages, researchers at MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) developed a system that is claimed to be able to automatically decipher a lost language, without needing advanced knowledge of its relation to other languages.
https://www.analyticsinsight.net/deciphering-extinct-ancient-languages-machine-learning/