Michael Chang, 30 years old, is the sort of guy that BattleFin, a recruitment firm searching for hedge fund talent, wants to attract. Six years ago, at a Foxconn plant in Guangdong, China, Mr. Chang used data analysis to figure out that the unusually cold weather outside had led to a high failure rate of the computer chips on the factory floor. The finding saved the company from significant revenue losses. Today, he runs a hedge fund in Cambridge, Mass., that analyzes not only weather, but news and shipping reports, to make investment decisions. To find more math whizzes who can apply their knowledge of other fields ... (full story)