7-Eleven Inc. has selected KSS Retail for its price modeling, forecasting and optimization solution for 7-Eleven stores in the U.S. and Canada. 7-Eleven plans to use KSS Retail’s PriceStrat and Heartbeat systems to conduct extensive market-basket analytics and affinity analysis to drive more effective promotions. It also plans to deploy PriceStrat’s cigarette buy-down capabilities to…