Abstract Since it does not depend on the starting point selection, data field clustering can perform unsupervised according to distribution characteristics. However, due its drawback of high computational complexity caused by iterative updates, is suitable for scenarios with real-time requirements such as radar signal sorting. In this paper, an improved method selection proposed address problem...

Many field measurements of viability and sexual selection on body size indicate that large size is favoured. However, life-history theory predicts that body size may be optimized and that patterns of selection may often be stabilizing rather than directional. One reason for this discrepancy may be that field estimates of selection tend to focus on limited components of fitness and may not fully...