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Source code for catalyst.utils.meters.movingaveragevaluemeter

import math

import torch

from . import meter


[docs]class MovingAverageValueMeter(meter.Meter): def __init__(self, windowsize): super(MovingAverageValueMeter, self).__init__() self.windowsize = windowsize self.valuequeue = torch.Tensor(windowsize) self.reset()
[docs] def reset(self): self.sum = 0.0 self.n = 0 self.var = 0.0 self.valuequeue.fill_(0)
[docs] def add(self, value): queueid = (self.n % self.windowsize) oldvalue = self.valuequeue[queueid] self.sum += value - oldvalue self.var += value * value - oldvalue * oldvalue self.valuequeue[queueid] = value self.n += 1
[docs] def value(self): n = min(self.n, self.windowsize) mean = self.sum / max(1, n) std = math.sqrt(max((self.var - n * mean * mean) / max(1, n - 1), 0)) return mean, std