However, due to the influence of raw cotton quality and various processes, the data of yarn neps index fluctuates greatly. There are many mutation data, and the complex relationship between input factors and yarn neps indexes is difficult to be mapped in practice.However, due to the influence of raw cotton quality and various processes, the data of yarn neps index fluctuates greatly, and there are many mutation data. In practice, the complex relationship between each input factor and yarn neps index is difficult to be mapped.