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- import numpy as np
- from sklearn import linear_model
- class MarketingCosts:
- # param marketing_expenditure list. Expenditure for each previous campaign.
- # param units_sold list. The number of units sold for each previous campaign.
- # param desired_units_sold int. Target number of units to sell in the new campaign.
- # returns float. Required amount of money to be invested.
- @staticmethod
- def desired_marketing_expenditure(marketing_expenditure, units_sold, desired_units_sold):
- x = np.array(units_sold).reshape(-1,1)
- y = np.array(marketing_expenditure).reshape(-1,1)
- y_predict = np.array(desired_units_sold).reshape(-1, 1)
- reg = linear_model.TheilSenRegressor()
- reg.fit(x,y)
- desired_marketing_expenditure = reg.predict(y_predict)
- return float(desired_marketing_expenditure)
- #For example, with the parameters below the function should return 250000.0.
- print(MarketingCosts.desired_marketing_expenditure(
- [300000, 200000, 400000, 300000, 100000],
- [60000, 50000, 90000, 80000, 30000],
- 60000))
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