risk information disclosure and corporate innovation

△RiskDis:Difference in the number of risk keyword terms between the two years before and after the annual report ,△RiskDis2:Difference in the number of words of risk keywords between the two years before and after the annual report. △RiskDis3Difference in the number of risk keywords (only “risk” and “uncertainty”) between the two years before and after the annual report .Patcit: Logarithm of the total number of citations of patents of the enterprise in that year.Patnum:The logarithm of the total number of patent applications filed and granted by the enterprise in the year.