STUDY OF MACHINE LEARNING METHODOLOGIES APPLIED TO THE RECOGNITION OF MENTAL STATES FOR THE PREVENTION OF ISOLATION AND SOCIAL DISTRESS IN THE ELDERLY. IN PARTICULAR, RESEARCH TOPICS WILL CONCERN PREDICTIVE ALGORITHMS FROM TIME SERIES COMING FROM ENVIRONMENTAL AND WEARABLE SENSORS, FOCUSING ON ASPECTS OF INTERPRETABILITÃ, MULTIMODAL COMBINATION OF SIGNALS, AND CUSTOMISATION OF PREDICTION. THE DOCTORATE WILL BE CARRIED OUT AT AN SME HIGHLY SPECIALISED IN THE SECTOR, WITHIN THE FRAMEWORK OF A COLLABORATION EXISTING FOR YEARS WITH THE PROPOSER. THE PHD STUDENT WILL BE ABLE TO PARTICIPATE IN EXISTING AND FUTURE INTERNATIONAL AND NATIONAL PROJECTS, AS WELL AS IN ACTIVE COLLABORATIONS WITH OTHER PRIVATE AND RESEARCH ORGANISATIONS IN THE FIELD DESCRIBED.