def argmin(self, c, lo, hi):
cut = None
if hi - lo > self.enough:
l, r = Num([]), Num([])
for i in range(lo, hi + 1):
r.numInc(float(self.rows[i][c]))
best = r.sd
for i in range(lo, hi + 1):
x = float(self.rows[i][c])
l.numInc(x)
r.numDec(x)
if l.n >= self.enough and r.n >= self.enough:
tmp = Num.numXpect(l, r) * Vars.unsuper['margin']
if tmp < best:
cut, best = i, tmp
return cut
def argmin(c, lo, hi):
cut = None
if ((hi - lo) > 2 * enough):
l = Num([])
r = Num([])
for i in range(lo, hi + 1):
r.numInc(rows[i][c])
best = r.sd
for i in range(lo, hi + 1):
x = rows[i][c]
l.numInc(x)
r.numDec(x)
if l.n >= enough and r.n >= enough:
tmp = Num.numXpect(data, l, r) * 1.05
if tmp < best:
cut = i
best = tmp
return cut