ray/rllib/utils/window_stat.py
2020-01-02 17:42:13 -08:00

32 lines
921 B
Python

from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import numpy as np
class WindowStat:
def __init__(self, name, n):
self.name = name
self.items = [None] * n
self.idx = 0
self.count = 0
def push(self, obj):
self.items[self.idx] = obj
self.idx += 1
self.count += 1
self.idx %= len(self.items)
def stats(self):
if not self.count:
quantiles = []
else:
quantiles = np.percentile(self.items[:self.count],
[0, 10, 50, 90, 100]).tolist()
return {
self.name + "_count": int(self.count),
self.name + "_mean": float(np.mean(self.items[:self.count])),
self.name + "_std": float(np.std(self.items[:self.count])),
self.name + "_quantiles": quantiles,
}