Restrict the allowance of estimation

[lisphilar]

Summary

This is related to #163 and #164
To keep the quality of estimation, restrict the allowance of estimation. Estimatior.run() (called by Scenario.estimate()) continues estimation if the max value of simulated values are not in the allowance of actual values. The allowance is set (0.8, 1.2) at this time.

Related classes

• covsirphy.Estimator
• covsirphy.Scenario

Codes and outputs:

import covsirphy as cs
# Dataset preparation
data_loader = cs.DataLoader("input")
jhu_data = data_loader.jhu()
population_data = data_loader.population()
scenario = cs.Scenario(jhu_data, population_data, country="Italy")
_ = scenario.records()
scenario.trend()
scenario.estimate(cs.SIRF)
scenario.add(end_date="01Jan2021")
_ = scenario.simulate()

Environment

• CovsirPhy version: 3.6.0-delta
• Python version; 3.8
• Installation: pipenv
• OS: WSL

[lisphilar]

The allowance can be changed by users with Scenario.estimate(allowance=(0.8, 1.2), but the defalt value will be changed to (0.98, 1.02).
This may lead long running time. We need to shorten running time by refactoring of Estimator class.