func (m *Miner) takeOne(queue []lattice.Node) ([]lattice.Node, lattice.Node) {
s := stats.Sample(10, len(queue))
k := m.Scorer.Kernel(queue, s)
var i int
var ms float64
if len(k) > 0 {
i, ms = stats.Max(stats.Srange(len(k)), func(i int) float64 { return k.Mean(i) })
i = s[i]
} else {
i, ms = stats.Max(s, func(i int) float64 { return m.Scorer.Score(queue[i], queue) })
}
errors.Logf("DEBUG", "max score %v, queue len %v, taking %v", ms, len(queue), queue[i])
return pop(queue, i)
}
func (m *Miner) dropOne(queue []lattice.Node) []lattice.Node {
s := stats.Sample(10, len(queue))
k := m.Scorer.Kernel(queue, s)
var i int
var ms float64
if len(k) > 0 {
i, ms = stats.Min(stats.Srange(len(k)), func(i int) float64 { return k.Mean(i) })
i = s[i]
} else {
i, ms = stats.Min(s, func(i int) float64 { return m.Scorer.Score(queue[i], queue) })
}
errors.Logf("DEBUG", "min score %v, queue len %v, dropping %v", ms, len(queue), queue[i])
queue, _ = pop(queue, i)
return queue
}
func (k Kernel) Mean(i int) float64 {
mean, _ := stats.Mean(stats.Srange(len(k)), func(j int) float64 {
return k[i][j]
})
return mean
}