Abstract: Machine learning systems and methods for validating workflows are provided. The system receives one or more digital images of a work action being performed, and processes the image using a hierarchical modeling process that includes a filter model and a cascaded expert model. The filter model processes the image to ascertain whether the image is suitable for use in validating completion of the work action. If the system determines that the image is suitable, the image is then processed by the expert model to classify whether the image depicts a scene occurring before, during, or after performance of the work action. The hierarchical modeling process can be utilized to validate different workflows based upon a specified workflow type. A plurality of hierarchical modeling processes can be applied in parallel to an input image in the event that a type of workflow to be validated is not specified in advance.

Abstract: Machine learning systems and methods for return on investment determinations from sparse data are provided. The system identifies one or more renovation projects of one or more properties, adjusts a property price for each of the one or more properties based at least in part on a price index, determines a group of properties with similar property characteristics using one or more trained machine learning models, calculates a price difference between each of the one or more properties after renovation and a similar property without renovation of the group of properties, and calculates cost of the one or more renovation projects. The system then calculates a return on investment (ROI) associated with each of the one or more properties.