Determining personality profiles based on online social speech

A method for determining a personality profile of an online user, comprising:

• storing social speech content data associated with an online user;
• using a machine learning model to determine based at least in part on the social speech content data associated with the online user a first personality profile of the online user;
• determining a second personality profile of the online user based on the social speech content data using a scientific personality model encoded in an ontology, wherein the ontology encodes statistical relationships between a plurality of words and a plurality of personality traits based on one or more scientific research studies, wherein a scientific research study comprises a study that uses questionnaires to collect statistical data;
• and
• applying an ensemble model to determine a third personality profile of the online user based at least in part on the first personality profile and the second personality profile.

A computer program product for determining a personality profile of an online user, the computer program product being embodied in a tangible computer readable storage medium and comprising computer instructions for:

• storing social speech content data associated with an online user;
• using a machine learning model to determine based at least in part on the social speech content data associated with the online user a first personality profile of the online user;
• determining a second personality profile of the online user based on the social speech content data using a scientific personality model encoded in an ontology, wherein the ontology encodes statistical relationships between a plurality of words and a plurality of personality traits based on one or more scientific research studies;
• and
• applying an ensemble model to determine a third personality profile of the online user based at least in part on the first personality profile and the second personality profile.