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tusharmakkar08/reliability_decay.py

Last active July 11, 2018 18:40
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Exponential decay
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reliability_decay.py
def time_impact_on_reliability(reliability, input_time):
"""
Calculates Impact of time on quote's reliability
:param reliability: Float. Current Reliability of the Quote
:param input_time: Datetime. Time when the quote was made
:return: Float. Impact of time on quote's reliability
"""
return reliability * numpy.exp(-1 * UserReliabilityCalculator.RELIABILITY_DECAY_RATE *
(datetime.datetime.now() - input_time).days)
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