class_docstr: Track a series of values and provide access to smoothed values over a
  window or the global series average.
class_docstr_tok: ["Track","a","series","of","values","and","provide","access","to","smoothed","values","over","a","window","or","the","global","series","average","."]
code: def __init__(self, window_size):
      self.deque = collections.deque(maxlen=window_size)
  
file_path: PaddleOCR/ppocr/utils/stats.py
imports: import collections
  import numpy
  import datetime
label_desc: Use image node_id 1 to create a new SmoothedValue object from inherited base classes: object with example: obj = SmoothedValue(window_size)