improvement of convergence meaning in English

收敛性的改善

Rut there also exist some imperative problems which have n ' t been resolved , such as the problem of optimizing network structure , the design of learning algorithms , the improvement of convergence speed and error precision , the decrease of anthropic factors and so on
但是也存在一些亟待解决的问题，如网络结构的优化问题、学习算法的设计、收敛速度和误差精度的提高及人为因素的减少等方面。