Abstract: Systems and methods for content customization are described. According to one aspect, a content customization apparatus is provided. The apparatus includes a processor; a memory storing instructions executable by the processor; a user feature component configured to generate user feature vectors representing user features for a plurality of users, respectively; a group selection component configured to select a treatment group and a control group based on the user feature vectors; a machine learning model configured to train a treatment effect estimator based on the user feature vectors and outcome data for the treatment group and the control group; and a content component configured to provide customized content based on the treatment effect estimator.

Abstract: A technique to enable accurate timing and functional verification in a negative constraint calculation (NCC) implemented event-driven logic simulators when there are negative constraints in logic elements. In one example embodiment, the technique adjusts negative timing constraints by grouping the timing constraints based on associated output terminals in a digital logic circuit. The NCC is then applied to each grouped constraint to correct for path delays and resulting timing inaccuracy during an event driven simulation.