ase.py 文件源码

def cdom(x, y, abouts):
  "many objective"
  x= abouts.objs(x)
  y= abouts.objs(y)
  def w(better):
    return -1 if better == less else 1
  def expLoss(w,x1,y1,n):
    return -1*math.e**( w*(x1 - y1) / n )
  def loss(x, y):
    losses= []
    n = min(len(x),len(y))
    for obj in abouts._objs:
      x1, y1  = x[obj.pos]  , y[obj.pos]
      x1, y1  = obj.norm(x1), obj.norm(y1)
      losses += [expLoss( w(obj.want),x1,y1,n)]
    return sum(losses) / n
  l1= loss(x,y)
  l2= loss(y,x)
  return l1 < l2