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Practical Time Series Analysis电子书

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7人正在读 | 0人评论 9.8

作       者:Dr. Avishek Pal,Dr. PKS Prakash

出  版  社:Packt Publishing

出版时间:2017-09-28

字       数:23.4万

所属分类: 进口书 > 外文原版书 > 电脑/网络

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Step by Step guide filled with real world practical examples. About This Book ? Get your first experience with data analysis with one of the most powerful types of analysis—time-series. ? Find patterns in your data and predict the future pattern based on historical data. ? Learn the statistics, theory, and implementation of Time-series methods using this example-rich guide Who This Book Is For This book is for anyone who wants to analyze data over time and/or frequency. A statistical background is necessary to quickly learn the analysis methods. What You Will Learn ? Understand the basic concepts of Time Series Analysis and appreciate its importance for the success of a data science project ? Develop an understanding of loading, exploring, and visualizing time-series data ? Explore auto-correlation and gain knowledge of statistical techniques to deal with non-stationarity time series ? Take advantage of exponential smoothing to tackle noise in time series data ? Learn how to use auto-regressive models to make predictions using time-series data ? Build predictive models on time series using techniques based on auto-regressive moving averages ? Discover recent advancements in deep learning to build accurate forecasting models for time series ? Gain familiarity with the basics of Python as a powerful yet simple to write programming language In Detail Time Series Analysis allows us to analyze data which is generated over a period of time and has sequential interdependencies between the observations. This book describes special mathematical tricks and techniques which are geared towards exploring the internal structures of time series data and generating powerful de*ive and predictive insights. Also, the book is full of real-life examples of time series and their analyses using cutting-edge solutions developed in Python. The book starts with de*ive analysis to create insightful visualizations of internal structures such as trend, seasonality and autocorrelation. Next, the statistical methods of dealing with autocorrelation and non-stationary time series are described. This is followed by exponential smoothing to produce meaningful insights from noisy time series data. At this point, we shift focus towards predictive analysis and introduce autoregressive models such as ARMA and ARIMA for time series forecasting. Later, powerful deep learning methods are presented, to develop accurate forecasting models for complex time series, and under the availability of little domain knowledge. All the topics are illustrated with real-life problem scenarios and their solutions by best-practice implementations in Python. The book concludes with the Appendix, with a brief discussion of programming and solving data science problems using Python. Style and approach This book takes the readers from the basic to advance level of Time series analysis in a very practical and real world use cases.
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Title Page

Copyright

Practical Time Series Analysis

Credits

About the Authors

About the Reviewer

www.PacktPub.com

Why subscribe?

Customer Feedback

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Errata

Piracy

Questions

Introduction to Time Series

Different types of data

Cross-sectional data

Time series data

Panel data

Internal structures of time series

General trend

Seasonality

Run sequence plot

Seasonal sub series plot

Multiple box plots

Cyclical changes

Unexpected variations

Models for time series analysis

Zero mean models

Random walk

Trend models

Seasonality models

Autocorrelation and Partial autocorrelation

Summary

Understanding Time Series Data

Advanced processing and visualization of time series data

Resampling time series data

Group wise aggregation

Moving statistics

Stationary processes

Differencing

First-order differencing

Second-order differencing

Seasonal differencing

Augmented Dickey-Fuller test

Time series decomposition

Moving averages

Moving averages and their smoothing effect

Seasonal adjustment using moving average

Weighted moving average

Time series decomposition using moving averages

Time series decomposition using statsmodels.tsa

Summary

Exponential Smoothing based Methods

Introduction to time series smoothing

First order exponential smoothing

Second order exponential smoothing

Modeling higher-order exponential smoothing

Summary

Auto-Regressive Models

Auto-regressive models

Moving average models

Building datasets with ARMA

ARIMA

Confidence interval

Summary

Deep Learning for Time Series Forecasting

Multi-layer perceptrons

Training MLPs

MLPs for time series forecasting

Recurrent neural networks

Bi-directional recurrent neural networks

Deep recurrent neural networks

Training recurrent neural networks

Solving the long-range dependency problem

Long Short Term Memory

Gated Recurrent Units

Which one to use - LSTM or GRU?

Recurrent neural networks for time series forecasting

Convolutional neural networks

2D convolutions

1D convolution

1D convolution for time series forecasting

Summary

Getting Started with Python

Installation

Python installers

Running the examples

Basic data types

List, tuple, and set

Strings

Maps

Keywords and functions

Iterators, iterables, and generators

Iterators

Iterables

Generators

Classes and objects

Summary

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