Multilingual system for early detection of neurodegenerative and psychiatric disorders

A method comprising:

• extracting features of speech from one or more datasets including speech records in a first language and speech records in a second language, wherein the one or more datasets include speech records and a known outcome corresponding to each of the speech records;
• and
• identifying a subset of the extracted features for accurately predicting a disease state or risk factor for speech records in both the first language and the second language by:
• training a plurality of models using different experimental subsets of features to predict the disease state for each of the speech records,
• assessing an accuracy of the plurality of models by comparing the predicted disease state to the known outcome for each of the speech records, and
• identifying the experimental subset of features used to train one or more models based on the assessed accuracy.

A system for predicting a disease state based on a speech occurrence, the system comprising:

• a feature extraction module configured to extract a plurality of lingual features from speech of the speech occurrence, wherein the plurality of lingual features are experimentally determined to have a high predictive value of the disease state for speech in each of a first language and a second language and include both word based features and complex features, wherein
• word based features comprise features derived from analysis of words within the speech, and
• complex features comprise features derived from analysis of the speech as a whole;
• a prediction module including a trained classification model, wherein the trained classification model is trained to generate a prediction of the disease state for a patient based on the speech using the plurality of lingual features extracted from the speech;
• and
• a communication interface configured to return the prediction of the disease state and one or more analytics regarding the speech and the lingual features to a user device for display to a user.