Stephanie ZhanJake Stangel/Sequoia CapitalA San Francisco venture firm developed a proprietary model it calls "moneyball for venture capital. "The firm is revealing 19 exceptional female investors with a keen eye for identifying future unicorns.Women still comprise only about 11% of investing partners at US VC firms.Even though venture capitalists invest in tech companies, most VCs are still decidedly low-tech, relying on gut, intuition, and personal relationships to make investment decisions.TRAC, a San Francisco-based early-stage firm cofounded by Fred Campbell, Joseph Aaron, Scott Pyne, Steve Marek, and Dick Fredericks, aims to take a more systematic approach.