(How to tune Parameters in Python using scikit learn) Grid Search Parameter Tuning in Python using scikit-learn # import python packages import numpy as np from sklearn import datasets from sklearn.linear_model import Ridge from sklearn.model_selection import GridSearchCV # load the diabetes datasets dataset = datasets.load_diabetes() # prepare a range of alpha values to test …
Day: April 15, 2021
(How to tune Parameters in Python using scikit learn) In this Learn through Codes example, you will learn How to tune Parameters in Python using scikit learn. How_to_tune_Parameters_in_Python_using_scikit_learn Python Example for Beginners Special 95% discount 2000+ Applied Machine Learning & Data Science Recipes Portfolio Projects for Aspiring Data Scientists: Tabular Text & Image …
(Python Example for Beginners) Write a Pandas program to convert integer or float epoch times to Timestamp and DatetimeIndex. Sample Solution: Python Code : import pandas as pd dates1 = pd.to_datetime([1329806505, 129806505, 1249892905, 1249979305, 1250065705], unit=’s’) print(“Convert integer or float epoch times to Timestamp and DatetimeIndex upto second:”) print(dates1) print(“nConvert integer or float …
(Python Example for Beginners) Write a Pandas program to extract the day name from a specified date. Add 2 days and 1 business day with the specified date. Sample Solution: Python Code : import pandas as pd newday = pd.Timestamp(‘2020-02-07’) print(“First date:”) print(newday) print(“nThe day name of the said date:”) print(newday.day_name()) print(“nAdd 2 …
(Python Example for Beginners) Write a Pandas program to generate time series combining day and intraday offsets intervals. Sample Solution: Python Code : import pandas as pd dateset1 = pd.date_range(‘2029-01-01 00:00:00′, periods=20, freq=’3h10min’) print(“Time series with frequency 3h10min:”) print(dateset1) dateset2 = pd.date_range(‘2029-01-01 00:00:00′, periods=20, freq=’1D10min20U’) print(“nTime series with frequency 1 day 10 minutes …
(Python Example for Beginners) Write a Pandas program to generate sequences of fixed-frequency dates and time spans intervals. Sample Solution: Python Code : import pandas as pd print(“Sequences of fixed-frequency dates and time spans (1 H):n”) r1 = pd.date_range(‘2030-01-01′, periods=10, freq=’H’) print(r1) print(“nSequences of fixed-frequency dates and time spans (3 H):n”) r2 = …
(Python Example for Beginners) Write a Pandas program to find the all the business quarterly begin and end dates of a specified year. Sample Solution: Python Code : import pandas as pd q_start_dates = pd.date_range(‘2020-01-01’, ‘2020-12-31′, freq=’BQS-JUN’) q_end_dates = pd.date_range(‘2020-01-01’, ‘2020-12-31′, freq=’BQ-JUN’) print(“All the business quarterly begin dates of 2020:”) print(q_start_dates.values) print(“nAll the …
(Python Example for Beginners) Write a Pandas program to calculate all Thursdays between two given days. Sample Solution: Python Code : import pandas as pd thursdays = pd.date_range(‘2020-01-01’, ‘2020-12-31’, freq=”W-THU”) print(“All Thursdays between 2020-01-01 and 2020-12-31:n”) print(thursdays.values) Sample Output: All Thursdays between 2020-01-01 and 2020-12-31: [‘2020-01-02T00:00:00.000000000’ ‘2020-01-09T00:00:00.000000000’ ‘2020-01-16T00:00:00.000000000’ ‘2020-01-23T00:00:00.000000000’ ‘2020-01-30T00:00:00.000000000’ ‘2020-02-06T00:00:00.000000000’ ‘2020-02-13T00:00:00.000000000’ ‘2020-02-20T00:00:00.000000000’ …
(Python Example for Beginners) Write a Pandas program to subtract two timestamps of same time zone or different time zone. Sample Solution: Python Code : import pandas as pd print(“Subtract two timestamps of same time zone:”) date1 = pd.Timestamp(‘2019-03-01 12:00′, tz=’US/Eastern’) date2 = pd.Timestamp(‘2019-04-01 07:00′, tz=’US/Eastern’) print(“Difference: “, (date2-date1)) print(“nSubtract two timestamps of …