pandas Series 比 numpy array 要强大很多,体现在很多方面 首先, pandas Series 有一些方法,比如: describe 方法可以给出 Series 的一些分析数据: import pandas as pd s = pd.Series([1,2,3,4]) d = s.describe()print(d) count 4.000000 mean 2.500000 std 1.290994 min 1.000000 25% 1.750000 50% 2.5000
import numpy as np import pandas as pd Pandas will be a major tool of interest throughout(贯穿) much of the rest of the book. It contains data structures and manipulation tools designed to make data cleaning(数据清洗) and analysis fast and easy in Python.
From: KU Leuven; ESAT-STADIUS比利时鲁汶大学 ?? How to model real-world multidimensional time series? especially, when these are sporadically observed data. ?? how to describe the evolution of the probability distribution of the data? ODE dynamics. sporadic
Problem: time series forecasting Challenge: forecasting for non-stationary signals and multiple future steps prediction ?? how to deal with non-stationary datasets?? Introduction one-step prediction problem VS multi-step prediction; multi-step foreca