课程信息
19,346

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中级

完成时间大约为20 小时

建议:6 weeks of study, 4-6 hours/week...

英语(English)

字幕:英语(English)

您将获得的技能

Python ProgrammingMachine LearningApplied Machine LearningSQL

100% 在线

立即开始,按照自己的计划学习。

可灵活调整截止日期

根据您的日程表重置截止日期。

中级

完成时间大约为20 小时

建议:6 weeks of study, 4-6 hours/week...

英语(English)

字幕:英语(English)

教学大纲 - 您将从这门课程中学到什么

1
完成时间为 4 小时

Thinking about data

This module introduces the idea of computational thinking, and how big data can make simple problems quite challenging to solve. We use the example of calculating the median and mean stack of a set of radio astronomy images to illustrate some of the issues you encounter when working with large datasets. ...
8 个视频 (总计 30 分钟), 1 个阅读材料, 4 个测验
8 个视频
Course overview2分钟
Pulsars3分钟
Diving in: imaging stacking5分钟
Challenge: the median doesn't scale2分钟
The solution: improving your method3分钟
Module summary1分钟
Interview with Aris Karastergiou6分钟
1 个阅读材料
Further reading10分钟
1 个练习
Pulsars: test your understanding10分钟
2
完成时间为 4 小时

Big data makes things slow

In this module we explore the idea of scaling your code. Some algorithms scale well as your dataset increases, but others become impossibly slow. We look at some of the reason for this, and use the example of cross-matching astronomical catalogues to demonstrate what kind of improvements you can make. ...
7 个视频 (总计 35 分钟), 3 个测验
7 个视频
Supermassive black holes3分钟
What is cross-matching?4分钟
Evaluating time complexity5分钟
A (much) faster algorithm6分钟
Module summary2分钟
Interview with Brendon Brewer8分钟
1 个练习
Supermassive black holes: test your understanding10分钟
3
完成时间为 4 小时

Querying your data

Most large astronomy projects use databases to manage their data. In this module we introduce SQL - the language most commonly used to query databases. We use SQL to query the NASA Exoplanet database and investigate the habitability of planets in other solar systems....
7 个视频 (总计 35 分钟), 3 个测验
7 个视频
Exoplanets4分钟
Querying database with SQL4分钟
More advanced SQL4分钟
Joining tables in SQL6分钟
Module summary2分钟
Interview with Jon Jenkins8分钟
1 个练习
Exoplanets - test your understanding10分钟
4
完成时间为 4 小时

Managing your data

This module introduces the basic principles of setting up databases. We look at how to set up new tables, and then how to combine Python and SQL to get the best out of both approaches. We use these tools to explore the life of stars in a stellar cluster. ...
6 个视频 (总计 29 分钟), 3 个测验
6 个视频
The lifecycle of stars6分钟
Setting up your own database5分钟
Exploring a star cluster4分钟
Module summary2分钟
Interview with Emily Petroff6分钟
1 个练习
Stars - test your understanding10分钟
5
完成时间为 4 小时

Learning from data: regression

This module introduces the idea of machine learning. We look at standard methodology for running machine learning experiments, and then apply this to calculating redshifts of distant galaxies using decision trees for regression. ...
7 个视频 (总计 40 分钟), 3 个测验
7 个视频
The cosmological distance scale6分钟
What is machine learning?7分钟
Decision tree classifiers5分钟
Estimating redshifts using regression5分钟
Summary2分钟
Interview with Ashish Mahabal8分钟
1 个练习
Cosmological distances - test your understanding10分钟
6
完成时间为 2 小时

Learning from data: classification

In this final module we explore the limitations of decision tree classifiers. We then look at ensemble classifiers, using the random forest algorithm to classify images of galaxies into different types....
7 个视频 (总计 42 分钟), 1 个阅读材料, 2 个测验
7 个视频
Types of galaxies6分钟
Morphological classification of galaxies6分钟
Limitations of decision tree classifiers5分钟
Improving our results with ensemble classifiers5分钟
Module summary4分钟
Interview with Karen Masters10分钟
1 个阅读材料
Classify some galaxies by hand!30分钟
1 个练习
Galaxies - test your understanding10分钟
4.8
111 个审阅Chevron Right

31%

完成这些课程后已开始新的职业生涯

24%

通过此课程获得实实在在的工作福利

热门审阅

创建者 GMJun 30th 2017

Great course with a good balance of code and the rewards to be had from understanding how the code works - proved to be an excellent introduction to Astronomy and confidence builder in Python.

创建者 JMJul 15th 2017

One of the best courses I've done on Coursera. Just enough astronomy to understand the problems, and then go into the exercises in a step by step way, building up complexity. Couldn't stop!

讲师

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Tara Murphy

Associate Professor
School of Physics
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Simon Murphy

Postdoctoral Researcher
School of Physics

关于 悉尼大学

The University of Sydney is one of the world’s leading comprehensive research and teaching universities, consistently ranked in the top 1 percent of universities in the world. In 2015, we were ranked 45 in the QS World University Rankings, and 100 percent of our research was rated at above, or well above, world standard in the Excellence in Research for Australia report....

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  • We assume you are familiar with basic programming in a modern programming language including variables, control structures, data structures, functions, and working with files. In this course we will use Python 3.

    We'll walk through all the examples and provide lots of support, so jump in and have a go. If haven't done any programming for a while, you might want to brush up before you start.

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