KXEN, a software company that provides tools for automated data mining, has closed $8 million in a fourth round of funding. As reported by peHUB, the funding will be used to focus on international expansion and vertical market development. KXEN, or Knowledge Extraction Engines, develops analytics software to help companies optimize customer lifecycles and supply chain management. Investors in the San Francisco company include NextStage Capital, XAnge Capital, Sofinnova Ventures, Saints Capital and Motorola Ventures.