How are validators measured and rewarded?

Performance metrics for each subnode are collected by a subset of the other subnodes in the network. Metrics for the overall behavior of the node itself are collected by 24 independent peer nodes. Combining these metrics yields an overall score which will determine whether or not a node is able to participate in a monthly bounty award. This bounty award also includes token inflation as set forth in a mainnet contract that handles node payouts (Payouts are evenly distributed across the validating pool except for a slight weighting in favor of nodes that are staked for a longer duration).