Abstract: Methods, systems, and non-transitory computer readable storage media are disclosed for analyzing feature impact of a machine-learning model using prototypes across analytical spaces. For example, the disclosed system can identify features of data points used to generate outputs via a machine-learning model and then map the features to a feature space and the outputs to a label space. The disclosed system can then utilize an iterative process to determine prototypes from the data points based on distances between the data points in the feature space and the label space. Furthermore, the disclosed system can then use the prototypes to determine the impact of the features within the machine-learning model based on locally sensitive directions; region variability; or mean, range, and variance of features of the prototypes.

Abstract: Methods, systems, and non-transitory computer readable storage media are disclosed for analyzing feature impact of a machine-learning model using prototypes across analytical spaces. For example, the disclosed system can identify features of data points used to generate outputs via a machine-learning model and then map the features to a feature space and the outputs to a label space. The disclosed system can then utilize an iterative process to determine prototypes from the data points based on distances between the data points in the feature space and the label space. Furthermore, the disclosed system can then use the prototypes to determine the impact of the features within the machine-learning model based on locally sensitive directions; region variability; or mean, range, and variance of features of the prototypes.

Abstract: A computer system stores digital media content such as images and video along with associated tags and timestamps. The system detects trends in the media content by semantic analysis which includes generation of a temporal tag graph that includes data indicative of a semantic representation of the tags over a plurality of time periods. The data in the tag graph is clustered to generate a set of identified trends reflected by the tags over the plurality of time periods. The set of identified trends is stored in data storage and is available for characterization which includes labeling of the trends, scoring the trends, evaluating changes in the trends over time, and identifying images representative of the detected trends. The temporal tag graph may take the form of a weighted undirected graph where each node in the graph is associated with one of the tags and the edges connecting the nodes represents a temporal correlation between the nodes associated with each edge.

Abstract: A computer system stores digital media content such as images and video along with associated tags and timestamps. The system detects trends in the media content by semantic analysis which includes generation of a temporal tag graph that includes data indicative of a semantic representation of the tags over a plurality of time periods. The data in the tag graph is clustered to generate a set of identified trends reflected by the tags over the plurality of time periods. The set of identified trends is stored in data storage and is available for characterization which includes labeling of the trends, scoring the trends, evaluating changes in the trends over time, and identifying images representative of the detected trends. The temporal tag graph may take the form of a weighted undirected graph where each node in the graph is associated with one of the tags and the edges connecting the nodes represents a temporal correlation between the nodes associated with each edge.